cve-2021-47179
Vulnerability from cvelistv5
Published
2024-03-25 09:16
Modified
2024-11-04 11:36
Severity ?
EPSS score ?
Summary
NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
References
{ "containers": { "adp": [ { "metrics": [ { "other": { "content": { "id": "CVE-2021-47179", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-03-25T15:17:57.286141Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-07-05T17:21:16.888Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" }, { "providerMetadata": { "dateUpdated": "2024-08-04T05:32:07.318Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_transferred" ], "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" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/nfs/pnfs.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "4e1ba532dbc1", "status": "affected", "version": "80e34f4957ec", "versionType": "git" }, { "lessThan": "42637ca25c7d", "status": "affected", "version": "7b7b97746432", "versionType": "git" }, { "lessThan": "39785761fead", "status": "affected", "version": "9ffa7967f937", "versionType": "git" }, { "lessThan": "aba3c7795f51", "status": "affected", "version": "6be0e4b59314", "versionType": "git" }, { "lessThan": "f9890652185b", "status": "affected", "version": "2fafe7d5047f", "versionType": "git" }, { "lessThan": "b090d110e666", "status": "affected", "version": "7e65ea887d0c", "versionType": "git" }, { "lessThan": "a421d218603f", "status": "affected", "version": "de144ff4234f", "versionType": "git" } ] }, { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/nfs/pnfs.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "4.9.271", "status": "affected", "version": "4.9.269", "versionType": "semver" }, { "lessThan": "4.14.235", "status": "affected", "version": "4.14.233", "versionType": "semver" }, { "lessThan": "4.19.193", "status": "affected", "version": "4.19.191", "versionType": "semver" }, { "lessThan": "5.4.124", "status": "affected", "version": "5.4.118", "versionType": "semver" }, { "lessThan": "5.10.42", "status": "affected", "version": "5.10.36", "versionType": "semver" }, { "lessThan": "5.12.9", "status": "affected", "version": "5.12.3", "versionType": "semver" } ] } ], "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\u0027t check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI\u0027m able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap." } ], "providerMetadata": { "dateUpdated": "2024-11-04T11:36:16.972Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "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-c8e10e5f6187" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2021-47179", "datePublished": "2024-03-25T09:16:28.787Z", "dateReserved": "2024-03-25T09:12:14.112Z", "dateUpdated": "2024-11-04T11:36:16.972Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-47179\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-25T10:15:09.317\",\"lastModified\":\"2024-05-16T21:20:28.357\",\"vulnStatus\":\"Analyzed\",\"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\u0027t check if we have a value here\\nbefore dereferencing it, causing an oops.\\n\\nI\u0027m 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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9.269\",\"versionEndExcluding\":\"4.9.271\",\"matchCriteriaId\":\"498E5552-CBDA-4FE4-8844-EE7D575C9F35\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.233\",\"versionEndExcluding\":\"4.14.235\",\"matchCriteriaId\":\"F80A9838-744C-4554-8CCE-B87128CC7170\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.191\",\"versionEndExcluding\":\"4.19.193\",\"matchCriteriaId\":\"BE4BABC9-D544-4D14-BF94-5E999CDF4847\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.118\",\"versionEndExcluding\":\"5.4.124\",\"matchCriteriaId\":\"255B5502-D9A3-44BD-9B79-7C957CA4B62B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.36\",\"versionEndExcluding\":\"5.10.42\",\"matchCriteriaId\":\"FAF8C28F-086A-4EC2-A931-2237C11F5F54\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12.3\",\"versionEndExcluding\":\"5.12.9\",\"matchCriteriaId\":\"148AD795-DE39-4B4E-BDFF-D6A492C22C4C\"}]}]}],\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}" } }
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Sightings
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.