{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47179", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-25T09:12:14.112Z", "datePublished": "2024-03-25T09:16:28.787Z", "dateUpdated": "2024-08-04T05:32:07.318Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:03:25.920Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn't check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI'm able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfs/pnfs.c"], "versions": [{"version": "80e34f4957ec", "lessThan": "4e1ba532dbc1", "status": "affected", "versionType": "git"}, {"version": "7b7b97746432", "lessThan": "42637ca25c7d", "status": "affected", "versionType": "git"}, {"version": "9ffa7967f937", "lessThan": "39785761fead", "status": "affected", "versionType": "git"}, {"version": "6be0e4b59314", "lessThan": "aba3c7795f51", "status": "affected", "versionType": "git"}, {"version": "2fafe7d5047f", "lessThan": "f9890652185b", "status": "affected", "versionType": "git"}, {"version": "7e65ea887d0c", "lessThan": "b090d110e666", "status": "affected", "versionType": "git"}, {"version": "de144ff4234f", "lessThan": "a421d218603f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfs/pnfs.c"], "versions": [{"version": "4.9.269", "lessThan": "4.9.271", "status": "affected", "versionType": "custom"}, {"version": "4.14.233", "lessThan": "4.14.235", "status": "affected", "versionType": "custom"}, {"version": "4.19.191", "lessThan": "4.19.193", "status": "affected", "versionType": "custom"}, {"version": "5.4.118", "lessThan": "5.4.124", "status": "affected", "versionType": "custom"}, {"version": "5.10.36", "lessThan": "5.10.42", "status": "affected", "versionType": "custom"}, {"version": "5.12.3", "lessThan": "5.12.9", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42"}, {"url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48"}, {"url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494"}, {"url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb"}, {"url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53"}, {"url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a"}, {"url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb"}], "title": "NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()", "x_generator": {"engine": "bippy-a5840b7849dd"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47179", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-03-25T15:17:57.286141Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-05T17:21:16.888Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.318Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.318Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47179", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-03-25T15:17:57.286141Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-05T15:20:38.291Z"}}], "cna": {"title": "NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "80e34f4957ec", "lessThan": "4e1ba532dbc1", "versionType": "git"}, {"status": "affected", "version": "7b7b97746432", "lessThan": "42637ca25c7d", "versionType": "git"}, {"status": "affected", "version": "9ffa7967f937", "lessThan": "39785761fead", "versionType": "git"}, {"status": "affected", "version": "6be0e4b59314", "lessThan": "aba3c7795f51", "versionType": "git"}, {"status": "affected", "version": "2fafe7d5047f", "lessThan": "f9890652185b", "versionType": "git"}, {"status": "affected", "version": "7e65ea887d0c", "lessThan": "b090d110e666", "versionType": "git"}, {"status": "affected", "version": "de144ff4234f", "lessThan": "a421d218603f", "versionType": "git"}], "programFiles": ["fs/nfs/pnfs.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.9.269", "lessThan": "4.9.271", "versionType": "custom"}, {"status": "affected", "version": "4.14.233", "lessThan": "4.14.235", "versionType": "custom"}, {"status": "affected", "version": "4.19.191", "lessThan": "4.19.193", "versionType": "custom"}, {"status": "affected", "version": "5.4.118", "lessThan": "5.4.124", "versionType": "custom"}, {"status": "affected", "version": "5.10.36", "lessThan": "5.10.42", "versionType": "custom"}, {"status": "affected", "version": "5.12.3", "lessThan": "5.12.9", "versionType": "custom"}], "programFiles": ["fs/nfs/pnfs.c"], "defaultStatus": "unaffected"}], "references": [{"url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42"}, {"url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48"}, {"url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494"}, {"url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb"}, {"url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53"}, {"url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a"}, {"url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb"}], "x_generator": {"engine": "bippy-a5840b7849dd"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn't check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI'm able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:03:25.920Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47179", "state": "PUBLISHED", "dateUpdated": "2024-08-04T05:32:07.318Z", "dateReserved": "2024-03-25T09:12:14.112Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-25T09:16:28.787Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "498E5552-CBDA-4FE4-8844-EE7D575C9F35", "versionEndExcluding": "4.9.271", "versionStartIncluding": "4.9.269", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F80A9838-744C-4554-8CCE-B87128CC7170", "versionEndExcluding": "4.14.235", "versionStartIncluding": "4.14.233", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BE4BABC9-D544-4D14-BF94-5E999CDF4847", "versionEndExcluding": "4.19.193", "versionStartIncluding": "4.19.191", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "255B5502-D9A3-44BD-9B79-7C957CA4B62B", "versionEndExcluding": "5.4.124", "versionStartIncluding": "5.4.118", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FAF8C28F-086A-4EC2-A931-2237C11F5F54", "versionEndExcluding": "5.10.42", "versionStartIncluding": "5.10.36", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "148AD795-DE39-4B4E-BDFF-D6A492C22C4C", "versionEndExcluding": "5.12.9", "versionStartIncluding": "5.12.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn't check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI'm able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFSv4: corrige una desreferencia de puntero NULL en pnfs_mark_matching_lsegs_return(). Confirme los cambios de144ff4234f _pnfs_return_layout() para llamar a pnfs_mark_matching_lsegs_return() pasando NULL como argumento de estructura pnfs_layout_range. Desafortunadamente, pnfs_mark_matching_lsegs_return() no verifica si tenemos un valor aqu\u00ed antes de eliminar la referencia a \u00e9l, lo que provoca un error. Puedo alcanzar este bloqueo de manera consistente cuando ejecuto pruebas b\u00e1sicas de Connectathon en NFS v4.1/v4.2 contra Ontap."}], "id": "CVE-2021-47179", "lastModified": "2024-05-16T21:20:28.357", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-03-25T10:15:09.317", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()", "id": "2271459", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2271459"}, "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-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn't check if we have a value here\nbefore dereferencing it, causing an oops.\nI'm able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap.", "A vulnerability in the Linux kernel's NFSv4 subsystem caused a NULL pointer dereference in pnfs_mark_matching_lsegs_return(). This issue occurred because _pnfs_return_layout() passed a NULL pnfs_layout_range argument, which was not checked before dereferencing, leading to a system crash."], "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-2021-47179", "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": "2024-03-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47179\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47179\nhttps://lore.kernel.org/linux-cve-announce/2024032538-CVE-2021-47179-d9c2@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 4.9.271, kernel 4.14.235, kernel 4.19.193, kernel 5.4.124, kernel 5.10.42, kernel 5.12.9"}