CVE-2021-47470 - OpenCVE

In the Linux kernel, the following vulnerability has been resolved: mm, slub: fix potential use-after-free in slab_debugfs_fops When sysfs_slab_add failed, we shouldn't call debugfs_slab_add() for s because s will be freed soon. And slab_debugfs_fops will use s later leading to a use-after-free.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/159d8cfbd0428d487c53be4722f33cdab0d25d83
https://git.kernel.org/stable/c/67823a544414def2a36c212abadb55b23bcda00c
https://lore.kernel.org/linux-cve-announce/2024052228-CVE-2021-47470-094f@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47470
https://www.cve.org/CVERecord?id=CVE-2021-47470

History

Wed, 11 Sep 2024 13:30:00 +0000

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

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-22T06:23:28.263Z

Updated: 2024-11-04T12:06:34.296Z

Reserved: 2024-05-22T06:20:56.199Z

Link: CVE-2021-47470

Vulnrichment

Updated: 2024-08-04T05:39:59.395Z

NVD

Status : Awaiting Analysis

Published: 2024-05-22T07:15:11.763

Modified: 2024-05-22T12:46:53.887

Link: CVE-2021-47470

Redhat

Severity : Moderate

Publid Date: 2024-05-22T00:00:00Z

Links: CVE-2021-47470 - Bugzilla

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47470", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-22T06:20:56.199Z", "datePublished": "2024-05-22T06:23:28.263Z", "dateUpdated": "2024-11-04T12:06:34.296Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:06:34.296Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm, slub: fix potential use-after-free in slab_debugfs_fops\n\nWhen sysfs_slab_add failed, we shouldn't call debugfs_slab_add() for s\nbecause s will be freed soon. And slab_debugfs_fops will use s later\nleading to a use-after-free."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/slub.c"], "versions": [{"version": "64dd68497be7", "lessThan": "159d8cfbd042", "status": "affected", "versionType": "git"}, {"version": "64dd68497be7", "lessThan": "67823a544414", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/slub.c"], "versions": [{"version": "5.14", "status": "affected"}, {"version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver"}, {"version": "5.14.15", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/159d8cfbd0428d487c53be4722f33cdab0d25d83"}, {"url": "https://git.kernel.org/stable/c/67823a544414def2a36c212abadb55b23bcda00c"}], "title": "mm, slub: fix potential use-after-free in slab_debugfs_fops", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.395Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/159d8cfbd0428d487c53be4722f33cdab0d25d83", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/67823a544414def2a36c212abadb55b23bcda00c", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47470", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:36:05.363526Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:53.419Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/159d8cfbd0428d487c53be4722f33cdab0d25d83", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/67823a544414def2a36c212abadb55b23bcda00c", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.395Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47470", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:36:05.363526Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:13.267Z"}}], "cna": {"title": "mm, slub: fix potential use-after-free in slab_debugfs_fops", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "64dd68497be7", "lessThan": "159d8cfbd042", "versionType": "git"}, {"status": "affected", "version": "64dd68497be7", "lessThan": "67823a544414", "versionType": "git"}], "programFiles": ["mm/slub.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.14"}, {"status": "unaffected", "version": "0", "lessThan": "5.14", "versionType": "semver"}, {"status": "unaffected", "version": "5.14.15", "versionType": "semver", "lessThanOrEqual": "5.14.*"}, {"status": "unaffected", "version": "5.15", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["mm/slub.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/159d8cfbd0428d487c53be4722f33cdab0d25d83"}, {"url": "https://git.kernel.org/stable/c/67823a544414def2a36c212abadb55b23bcda00c"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm, slub: fix potential use-after-free in slab_debugfs_fops\n\nWhen sysfs_slab_add failed, we shouldn't call debugfs_slab_add() for s\nbecause s will be freed soon. And slab_debugfs_fops will use s later\nleading to a use-after-free."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:06:34.296Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47470", "state": "PUBLISHED", "dateUpdated": "2024-11-04T12:06:34.296Z", "dateReserved": "2024-05-22T06:20:56.199Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-22T06:23:28.263Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"bugzilla": {"description": "kernel: mm, slub: fix potential use-after-free in slab_debugfs_fops", "id": "2282885", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282885"}, "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:\nmm, slub: fix potential use-after-free in slab_debugfs_fops\nWhen sysfs_slab_add failed, we shouldn't call debugfs_slab_add() for s\nbecause s will be freed soon. And slab_debugfs_fops will use s later\nleading to a use-after-free."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2021-47470", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "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": "2024-05-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47470\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47470\nhttps://lore.kernel.org/linux-cve-announce/2024052228-CVE-2021-47470-094f@gregkh/T"], "statement": "Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.", "threat_severity": "Moderate", "upstream_fix": "kernel 5.14.15, kernel 5.15"}