CVE-2021-47224 - Vulnerability Details

Vendors	Products
Linux	Linux Kernel

Link	Providers
https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358
https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47
https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3
https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b
https://lore.kernel.org/linux-cve-announce/2024052136-CVE-2021-47224-8135@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47224
https://www.cve.org/CVERecord?id=CVE-2021-47224

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.13:rc1:::::: cpe:2.3:o:linux:linux_kernel:5.13:rc2:::::: cpe:2.3:o:linux:linux_kernel:5.13:rc3:::::: cpe:2.3:o:linux:linux_kernel:5.13:rc4:::::: cpe:2.3:o:linux:linux_kernel:5.13:rc5:::::: cpe:2.3:o:linux:linux_kernel:5.13:rc6::::::
Vendors & Products		Linux Linux linux Kernel

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`	cvssV3_1 `{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Show plain JSON

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47224", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-04-10T18:59:19.529Z", "datePublished": "2024-05-21T14:19:29.542Z", "dateUpdated": "2024-12-19T07:37:43.723Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T07:37:43.723Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ll_temac: Make sure to free skb when it is completely used\n\nWith the skb pointer piggy-backed on the TX BD, we have a simple and\nefficient way to free the skb buffer when the frame has been transmitted.\nBut in order to avoid freeing the skb while there are still fragments from\nthe skb in use, we need to piggy-back on the TX BD of the skb, not the\nfirst.\n\nWithout this, we are doing use-after-free on the DMA side, when the first\nBD of a multi TX BD packet is seen as completed in xmit_done, and the\nremaining BDs are still being processed."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/xilinx/ll_temac_main.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "6d120ab4dc39a543c6b63361e1d0541c382900a3", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "019ab7d044d0ebf97e1236bb8935b7809be92358", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "6aa32217a9a446275440ee8724b1ecaf1838df47", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/xilinx/ll_temac_main.c"], "versions": [{"version": "5.4.128", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.46", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.13", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3"}, {"url": "https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358"}, {"url": "https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b"}, {"url": "https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47"}], "title": "net: ll_temac: Make sure to free skb when it is completely used", "x_generator": {"engine": "bippy-5f407fcff5a0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-05-31T18:48:29.010008Z", "id": "CVE-2021-47224", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-04T20:41:06.725Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.412Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47", "tags": ["x_transferred"]}]}]}}

{

dataType : CVE_RECORD (string)

dataVersion : 5.1 (string)

cveMetadata : { »

cveId : CVE-2021-47224 (string)

assignerOrgId : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

state : PUBLISHED (string)

assignerShortName : Linux (string)

dateReserved : 2024-04-10T18:59:19.529Z (string)

datePublished : 2024-05-21T14:19:29.542Z (string)

dateUpdated : 2024-12-19T07:37:43.723Z (string)

}

containers : { »

cna : { »

providerMetadata : { »

orgId : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

shortName : Linux (string)

dateUpdated : 2024-12-19T07:37:43.723Z (string)

}

descriptions : [ »

0 : { »

lang : en (string)

value : In the Linux kernel, the following vulnerability has been resolved: net: ll_temac: Make sure to free skb when it is completely used With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid freeing the skb while there are still fragments from the skb in use, we need to piggy-back on the TX BD of the skb, not the first. Without this, we are doing use-after-free on the DMA side, when the first BD of a multi TX BD packet is seen as completed in xmit_done, and the remaining BDs are still being processed. (string)

}

]

affected : [ »

0 : { »

product : Linux (string)

vendor : Linux (string)

defaultStatus : unaffected (string)

repo : https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git (string)

programFiles : [ »

0 : drivers/net/ethernet/xilinx/ll_temac_main.c (string)

]

versions : [ »

0 : { »

version : 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (string)

lessThan : 6d120ab4dc39a543c6b63361e1d0541c382900a3 (string)

status : affected (string)

versionType : git (string)

}

1 : { »

version : 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (string)

lessThan : 019ab7d044d0ebf97e1236bb8935b7809be92358 (string)

status : affected (string)

versionType : git (string)

}

2 : { »

version : 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (string)

lessThan : e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b (string)

status : affected (string)

versionType : git (string)

}

3 : { »

version : 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (string)

lessThan : 6aa32217a9a446275440ee8724b1ecaf1838df47 (string)

status : affected (string)

versionType : git (string)

}

]

}

1 : { »

product : Linux (string)

vendor : Linux (string)

defaultStatus : affected (string)

repo : https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git (string)

programFiles : [ »

0 : drivers/net/ethernet/xilinx/ll_temac_main.c (string)

]

versions : [ »

0 : { »

version : 5.4.128 (string)

lessThanOrEqual : 5.4.* (string)

status : unaffected (string)

versionType : semver (string)

}

1 : { »

version : 5.10.46 (string)

lessThanOrEqual : 5.10.* (string)

status : unaffected (string)

versionType : semver (string)

}

2 : { »

version : 5.12.13 (string)

lessThanOrEqual : 5.12.* (string)

status : unaffected (string)

versionType : semver (string)

}

3 : { »

version : 5.13 (string)

lessThanOrEqual : * (string)

status : unaffected (string)

versionType : original_commit_for_fix (string)

}

]

}

]

references : [ »

0 : { »

url : https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 (string)

}

1 : { »

url : https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 (string)

}

2 : { »

url : https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b (string)

}

3 : { »

url : https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 (string)

}

]

title : net: ll_temac: Make sure to free skb when it is completely used (string)

x_generator : { »

engine : bippy-5f407fcff5a0 (string)

}

adp : [ »

0 : { »

problemTypes : [ »

0 : { »

descriptions : [ »

0 : { »

type : CWE (string)

lang : en (string)

description : CWE-noinfo Not enough information (string)

}

]

}

]

metrics : [ »

0 : { »

cvssV3_1 : { »

scope : UNCHANGED (string)

version : 3.1 (string)

baseScore : 6.2 (number)

attackVector : LOCAL (string)

baseSeverity : MEDIUM (string)

vectorString : CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (string)

integrityImpact : NONE (string)

userInteraction : NONE (string)

attackComplexity : LOW (string)

availabilityImpact : HIGH (string)

privilegesRequired : NONE (string)

confidentialityImpact : NONE (string)

}

1 : { »

other : { »

type : ssvc (string)

content : { »

timestamp : 2024-05-31T18:48:29.010008Z (string)

id : CVE-2021-47224 (string)

options : [ »

0 : { »

Exploitation : none (string)

}

1 : { »

Automatable : no (string)

}

2 : { »

Technical Impact : partial (string)

}

]

role : CISA Coordinator (string)

version : 2.0.3 (string)

}

]

title : CISA ADP Vulnrichment (string)

providerMetadata : { »

orgId : 134c704f-9b21-4f2e-91b3-4a467353bcc0 (string)

shortName : CISA-ADP (string)

dateUpdated : 2024-11-04T20:41:06.725Z (string)

}

1 : { »

providerMetadata : { »

orgId : af854a3a-2127-422b-91ae-364da2661108 (string)

shortName : CVE (string)

dateUpdated : 2024-08-04T05:32:07.412Z (string)

}

title : CVE Program Container (string)

references : [ »

0 : { »

url : https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 (string)

tags : [ »

0 : x_transferred (string)

]

}

1 : { »

url : https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 (string)

tags : [ »

0 : x_transferred (string)

]

}

2 : { »

url : https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b (string)

tags : [ »

0 : x_transferred (string)

]

}

3 : { »

url : https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 (string)

tags : [ »

0 : x_transferred (string)

]

}

]

}

]

}

Show plain JSON

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.412Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2021-47224", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-31T18:48:29.010008Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-31T18:48:32.403Z"}}], "cna": {"title": "net: ll_temac: Make sure to free skb when it is completely used", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f4", "lessThan": "6d120ab4dc39", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "019ab7d044d0", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "e8afe05bd359", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "6aa32217a9a4", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/xilinx/ll_temac_main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "unaffected", "version": "5.4.128", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.46", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.12.13", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/xilinx/ll_temac_main.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3"}, {"url": "https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358"}, {"url": "https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b"}, {"url": "https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ll_temac: Make sure to free skb when it is completely used\n\nWith the skb pointer piggy-backed on the TX BD, we have a simple and\nefficient way to free the skb buffer when the frame has been transmitted.\nBut in order to avoid freeing the skb while there are still fragments from\nthe skb in use, we need to piggy-back on the TX BD of the skb, not the\nfirst.\n\nWithout this, we are doing use-after-free on the DMA side, when the first\nBD of a multi TX BD packet is seen as completed in xmit_done, and the\nremaining BDs are still being processed."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:01:48.724Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47224", "state": "PUBLISHED", "dateUpdated": "2024-11-04T20:41:06.725Z", "dateReserved": "2024-04-10T18:59:19.529Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T14:19:29.542Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{

dataType : CVE_RECORD (string)

containers : { »

adp : [ »

0 : { »

title : CVE Program Container (string)

references : [ »

0 : { »

url : https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 (string)

tags : [ »

0 : x_transferred (string)

]

}

1 : { »

url : https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 (string)

tags : [ »

0 : x_transferred (string)

]

}

2 : { »

url : https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b (string)

tags : [ »

0 : x_transferred (string)

]

}

3 : { »

url : https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 (string)

tags : [ »

0 : x_transferred (string)

]

}

]

providerMetadata : { »

orgId : af854a3a-2127-422b-91ae-364da2661108 (string)

shortName : CVE (string)

dateUpdated : 2024-08-04T05:32:07.412Z (string)

}

1 : { »

title : CISA ADP Vulnrichment (string)

metrics : [ »

0 : { »

cvssV3_1 : { »

scope : UNCHANGED (string)

version : 3.1 (string)

baseScore : 6.2 (number)

attackVector : LOCAL (string)

baseSeverity : MEDIUM (string)

vectorString : CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (string)

integrityImpact : NONE (string)

userInteraction : NONE (string)

attackComplexity : LOW (string)

availabilityImpact : HIGH (string)

privilegesRequired : NONE (string)

confidentialityImpact : NONE (string)

}

1 : { »

other : { »

type : ssvc (string)

content : { »

id : CVE-2021-47224 (string)

role : CISA Coordinator (string)

options : [ »

0 : { »

Exploitation : none (string)

}

1 : { »

Automatable : no (string)

}

2 : { »

Technical Impact : partial (string)

}

]

version : 2.0.3 (string)

timestamp : 2024-05-31T18:48:29.010008Z (string)

}

]

problemTypes : [ »

0 : { »

descriptions : [ »

0 : { »

lang : en (string)

type : CWE (string)

description : CWE-noinfo Not enough information (string)

}

]

}

]

providerMetadata : { »

orgId : 134c704f-9b21-4f2e-91b3-4a467353bcc0 (string)

shortName : CISA-ADP (string)

dateUpdated : 2024-05-31T18:48:32.403Z (string)

}

]

cna : { »

title : net: ll_temac: Make sure to free skb when it is completely used (string)

affected : [ »

0 : { »

repo : https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git (string)

vendor : Linux (string)

product : Linux (string)

versions : [ »

0 : { »

status : affected (string)

version : 1da177e4c3f4 (string)

lessThan : 6d120ab4dc39 (string)

versionType : git (string)

}

1 : { »

status : affected (string)

version : 1da177e4c3f4 (string)

lessThan : 019ab7d044d0 (string)

versionType : git (string)

}

2 : { »

status : affected (string)

version : 1da177e4c3f4 (string)

lessThan : e8afe05bd359 (string)

versionType : git (string)

}

3 : { »

status : affected (string)

version : 1da177e4c3f4 (string)

lessThan : 6aa32217a9a4 (string)

versionType : git (string)

}

]

programFiles : [ »

0 : drivers/net/ethernet/xilinx/ll_temac_main.c (string)

]

defaultStatus : unaffected (string)

}

1 : { »

repo : https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git (string)

vendor : Linux (string)

product : Linux (string)

versions : [ »

0 : { »

status : unaffected (string)

version : 5.4.128 (string)

versionType : semver (string)

lessThanOrEqual : 5.4.* (string)

}

1 : { »

status : unaffected (string)

version : 5.10.46 (string)

versionType : semver (string)

lessThanOrEqual : 5.10.* (string)

}

2 : { »

status : unaffected (string)

version : 5.12.13 (string)

versionType : semver (string)

lessThanOrEqual : 5.12.* (string)

}

3 : { »

status : unaffected (string)

version : 5.13 (string)

versionType : original_commit_for_fix (string)

lessThanOrEqual : * (string)

}

]

programFiles : [ »

0 : drivers/net/ethernet/xilinx/ll_temac_main.c (string)

]

defaultStatus : affected (string)

}

]

references : [ »

0 : { »

url : https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 (string)

}

1 : { »

url : https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 (string)

}

2 : { »

url : https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b (string)

}

3 : { »

url : https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 (string)

}

]

x_generator : { »

engine : bippy-9e1c9544281a (string)

}

descriptions : [ »

0 : { »

lang : en (string)

value : In the Linux kernel, the following vulnerability has been resolved: net: ll_temac: Make sure to free skb when it is completely used With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid freeing the skb while there are still fragments from the skb in use, we need to piggy-back on the TX BD of the skb, not the first. Without this, we are doing use-after-free on the DMA side, when the first BD of a multi TX BD packet is seen as completed in xmit_done, and the remaining BDs are still being processed. (string)

}

]

providerMetadata : { »

orgId : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

shortName : Linux (string)

dateUpdated : 2024-11-04T12:01:48.724Z (string)

}

cveMetadata : { »

cveId : CVE-2021-47224 (string)

state : PUBLISHED (string)

dateUpdated : 2024-11-04T20:41:06.725Z (string)

dateReserved : 2024-04-10T18:59:19.529Z (string)

assignerOrgId : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

datePublished : 2024-05-21T14:19:29.542Z (string)

assignerShortName : Linux (string)

}

dataVersion : 5.1 (string)

}

Show plain JSON

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3F3CD510-C528-4ECA-AD21-A4F1A661CA40", "versionEndExcluding": "5.4.128", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "59455D13-A902-42E1-97F7-5ED579777193", "versionEndExcluding": "5.10.46", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7806E7E5-6D4F-4E18-81C1-79B3C60EE855", "versionEndExcluding": "5.12.13", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*", "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*", "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*", "matchCriteriaId": "DA610E30-717C-4700-9F77-A3C9244F3BFD", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*", "matchCriteriaId": "1ECD33F5-85BE-430B-8F86-8D7BD560311D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*", "matchCriteriaId": "CF351855-2437-4CF5-AD7C-BDFA51F27683", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*", "matchCriteriaId": "25A855BA-2118-44F2-90EF-EBBB12AF51EF", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ll_temac: Make sure to free skb when it is completely used\n\nWith the skb pointer piggy-backed on the TX BD, we have a simple and\nefficient way to free the skb buffer when the frame has been transmitted.\nBut in order to avoid freeing the skb while there are still fragments from\nthe skb in use, we need to piggy-back on the TX BD of the skb, not the\nfirst.\n\nWithout this, we are doing use-after-free on the DMA side, when the first\nBD of a multi TX BD packet is seen as completed in xmit_done, and the\nremaining BDs are still being processed."}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net:ll_temac: Aseg\u00farate de liberar skb cuando est\u00e9 completamente utilizado. Con el puntero skb acoplado en la BD TX, tenemos una forma sencilla y eficaz de liberar el buffer skb. cuando la trama ha sido transmitida. Pero para evitar liberar el skb mientras todav\u00eda hay fragmentos del skb en uso, debemos aprovechar el BD TX del skb, no el primero. Sin esto, estamos haciendo use after free en el lado DMA, cuando el primer BD de un paquete BD de transmisi\u00f3n m\u00faltiple se considera completado en xmit_done y los BD restantes todav\u00eda se est\u00e1n procesando."}], "id": "CVE-2021-47224", "lastModified": "2025-04-04T14:32:24.247", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-05-21T15:15:11.687", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{

configurations : [ »

0 : { »

nodes : [ »

0 : { »

cpeMatch : [ »

0 : { »

criteria : cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* (string)

matchCriteriaId : 3F3CD510-C528-4ECA-AD21-A4F1A661CA40 (string)

versionEndExcluding : 5.4.128 (string)

vulnerable : true (boolean)

}

1 : { »

criteria : cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* (string)

matchCriteriaId : 59455D13-A902-42E1-97F7-5ED579777193 (string)

versionEndExcluding : 5.10.46 (string)

versionStartIncluding : 5.5 (string)

vulnerable : true (boolean)

}

2 : { »

criteria : cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* (string)

matchCriteriaId : 7806E7E5-6D4F-4E18-81C1-79B3C60EE855 (string)

versionEndExcluding : 5.12.13 (string)

versionStartIncluding : 5.11 (string)

vulnerable : true (boolean)

}

3 : { »

criteria : cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* (string)

matchCriteriaId : 0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7 (string)

vulnerable : true (boolean)

}

4 : { »

criteria : cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* (string)

matchCriteriaId : 96AC23B2-D46A-49D9-8203-8E1BEDCA8532 (string)

vulnerable : true (boolean)

}

5 : { »

criteria : cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* (string)

matchCriteriaId : DA610E30-717C-4700-9F77-A3C9244F3BFD (string)

vulnerable : true (boolean)

}

6 : { »

criteria : cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:* (string)

matchCriteriaId : 1ECD33F5-85BE-430B-8F86-8D7BD560311D (string)

vulnerable : true (boolean)

}

7 : { »

criteria : cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:* (string)

matchCriteriaId : CF351855-2437-4CF5-AD7C-BDFA51F27683 (string)

vulnerable : true (boolean)

}

8 : { »

criteria : cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:* (string)

matchCriteriaId : 25A855BA-2118-44F2-90EF-EBBB12AF51EF (string)

vulnerable : true (boolean)

}

]

negate : false (boolean)

operator : OR (string)

}

]

}

]

cveTags : [ *empty* ]

descriptions : [ »

0 : { »

lang : en (string)

value : In the Linux kernel, the following vulnerability has been resolved: net: ll_temac: Make sure to free skb when it is completely used With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid freeing the skb while there are still fragments from the skb in use, we need to piggy-back on the TX BD of the skb, not the first. Without this, we are doing use-after-free on the DMA side, when the first BD of a multi TX BD packet is seen as completed in xmit_done, and the remaining BDs are still being processed. (string)

}

1 : { »

lang : es (string)

value : En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net:ll_temac: Asegúrate de liberar skb cuando esté completamente utilizado. Con el puntero skb acoplado en la BD TX, tenemos una forma sencilla y eficaz de liberar el buffer skb. cuando la trama ha sido transmitida. Pero para evitar liberar el skb mientras todavía hay fragmentos del skb en uso, debemos aprovechar el BD TX del skb, no el primero. Sin esto, estamos haciendo use after free en el lado DMA, cuando el primer BD de un paquete BD de transmisión múltiple se considera completado en xmit_done y los BD restantes todavía se están procesando. (string)

}

]

id : CVE-2021-47224 (string)

lastModified : 2025-04-04T14:32:24.247 (string)

metrics : { »

cvssMetricV31 : [ »

0 : { »

cvssData : { »

attackComplexity : LOW (string)

attackVector : LOCAL (string)

availabilityImpact : HIGH (string)

baseScore : 6.2 (number)

baseSeverity : MEDIUM (string)

confidentialityImpact : NONE (string)

integrityImpact : NONE (string)

privilegesRequired : NONE (string)

scope : UNCHANGED (string)

userInteraction : NONE (string)

vectorString : CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (string)

version : 3.1 (string)

}

exploitabilityScore : 2.5 (number)

impactScore : 3.6 (number)

source : 134c704f-9b21-4f2e-91b3-4a467353bcc0 (string)

type : Secondary (string)

}

]

}

published : 2024-05-21T15:15:11.687 (string)

references : [ »

0 : { »

source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 (string)

}

1 : { »

source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 (string)

}

2 : { »

source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 (string)

}

3 : { »

source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b (string)

}

4 : { »

source : af854a3a-2127-422b-91ae-364da2661108 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 (string)

}

5 : { »

source : af854a3a-2127-422b-91ae-364da2661108 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 (string)

}

6 : { »

source : af854a3a-2127-422b-91ae-364da2661108 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 (string)

}

7 : { »

source : af854a3a-2127-422b-91ae-364da2661108 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b (string)

}

]

sourceIdentifier : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

vulnStatus : Analyzed (string)

weaknesses : [ »

0 : { »

description : [ »

0 : { »

lang : en (string)

value : CWE-416 (string)

}

]

source : nvd@nist.gov (string)

type : Primary (string)

}

]

}

Show plain JSON

{"bugzilla": {"description": "kernel: net: ll_temac: Make sure to free skb when it is completely used", "id": "2282593", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282593"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: ll_temac: Make sure to free skb when it is completely used\nWith the skb pointer piggy-backed on the TX BD, we have a simple and\nefficient way to free the skb buffer when the frame has been transmitted.\nBut in order to avoid freeing the skb while there are still fragments from\nthe skb in use, we need to piggy-back on the TX BD of the skb, not the\nfirst.\nWithout this, we are doing use-after-free on the DMA side, when the first\nBD of a multi TX BD packet is seen as completed in xmit_done, and the\nremaining BDs are still being processed.", "A vulnerability was found in the Linux kernel's ll_temac driver, where the skb (socket buffer) may be improperly freed after use. This can lead to a use-after-free issue, as fragments of the skb can still be in use while attempting to free it, causing instability in the system during data transmission."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47224", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47224\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47224\nhttps://lore.kernel.org/linux-cve-announce/2024052136-CVE-2021-47224-8135@gregkh/T"], "statement": "None of the products shipped by Red Hat are affected by this vulnerability.", "threat_severity": "Moderate"}

{

bugzilla : { »

description : kernel: net: ll_temac: Make sure to free skb when it is completely used (string)

id : 2282593 (string)

url : https://bugzilla.redhat.com/show_bug.cgi?id=2282593 (string)

}

csaw : false (boolean)

cvss3 : { »

cvss3_base_score : 5.5 (string)

cvss3_scoring_vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (string)

status : draft (string)

}

cwe : CWE-416 (string)

details : [ »

0 : In the Linux kernel, the following vulnerability has been resolved: net: ll_temac: Make sure to free skb when it is completely used With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid freeing the skb while there are still fragments from the skb in use, we need to piggy-back on the TX BD of the skb, not the first. Without this, we are doing use-after-free on the DMA side, when the first BD of a multi TX BD packet is seen as completed in xmit_done, and the remaining BDs are still being processed. (string)

1 : A vulnerability was found in the Linux kernel's ll_temac driver, where the skb (socket buffer) may be improperly freed after use. This can lead to a use-after-free issue, as fragments of the skb can still be in use while attempting to free it, causing instability in the system during data transmission. (string)

]

mitigation : { »

lang : en:us (string)

value : Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible. (string)

}

name : CVE-2021-47224 (string)

package_state : [ »

0 : { »

cpe : cpe:/o:redhat:enterprise_linux:6 (string)