CVE-2026-63800

{"id": "CVE-2026-63800", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "06f58dbc49a23c99e5c0f246879ed16667f7bf8f", "lessThan": "4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98", "versionType": "git"}, {"status": "affected", "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704", "lessThan": "1f24b8302c77dcaf79c64c073877a3b9f4dd25d2", "versionType": "git"}, {"status": "affected", "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704", "lessThan": "9c0fb5c09ae5bd68dc0038692af8127029cb0385", "versionType": "git"}, {"status": "affected", "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704", "lessThan": "7e37e9b3e82ade881e1798e2f4fcc54aff7793c1", "versionType": "git"}, {"status": "affected", "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704", "lessThan": "2883ddd7542b4437a2ab4908fe2773f690e20889", "versionType": "git"}, {"status": "affected", "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704", "lessThan": "200e7637f4d6a1342987045eea72641524f909dc", "versionType": "git"}, {"status": "affected", "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704", "lessThan": "9645aaf689aff57427ece3b9fa47d5b5399417f4", "versionType": "git"}, {"status": "affected", "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704", "lessThan": "13e198a90ca4050f4bee8a3f23680389a6563ccc", "versionType": "git"}, {"status": "affected", "version": "aa2399f55eff4ec78330bb6fe55f9df53e5cae0c", "versionType": "git"}, {"status": "affected", "version": "5.10.9", "lessThan": "5.10.260", "versionType": "semver"}, {"status": "affected", "version": "5.4.91", "lessThan": "5.5", "versionType": "semver"}], "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": "5.11"}, {"status": "unaffected", "version": "0", "lessThan": "5.11", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.260", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.211", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.177", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.144", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.95", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.38", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.3", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/nfs/pnfs.c"], "defaultStatus": "affected"}]}], "published": "2026-07-19T12:16:52.553", "references": [{"url": "https://git.kernel.org/stable/c/13e198a90ca4050f4bee8a3f23680389a6563ccc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1f24b8302c77dcaf79c64c073877a3b9f4dd25d2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/200e7637f4d6a1342987045eea72641524f909dc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2883ddd7542b4437a2ab4908fe2773f690e20889", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7e37e9b3e82ade881e1798e2f4fcc54aff7793c1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9645aaf689aff57427ece3b9fa47d5b5399417f4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9c0fb5c09ae5bd68dc0038692af8127029cb0385", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npNFS: Fix use-after-free in pnfs_update_layout()\n\nWhen hitting the NFS_LAYOUT_RETURN branch in pnfs_update_layout(),\nthe code calls pnfs_prepare_to_retry_layoutget(lo). If it succeeds,\npnfs_put_layout_hdr(lo) is called before trace_pnfs_update_layout(),\nwhich still references 'lo'. This results in a use-after-free when the\ntracepoint accesses lo's fields.\n\nFix this by moving the tracepoint call before pnfs_put_layout_hdr(lo)."}], "lastModified": "2026-07-29T20:12:04.853", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1FDC12D0-2C56-4F4C-9EBF-45DCF5316E5D", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.91"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7257F51A-BFB1-4EFF-8AB1-DEEF700EF3D5", "versionEndExcluding": "5.10.260", "versionStartIncluding": "5.10.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "655F31B9-4770-4EFA-8C26-7508934F4CDF", "versionEndExcluding": "5.15.211", "versionStartIncluding": "5.11.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "333C9E30-7FD4-46A2-94EF-C1AA1F3EE28B", "versionEndExcluding": "6.1.177", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C8AD3BC8-C843-423C-B9DB-CB52F67F578E", "versionEndExcluding": "6.6.144", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4E206B86-E0E3-4394-A93F-39F2D50A8AA8", "versionEndExcluding": "6.12.95", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA591B28-5D62-449E-BDBE-3C9391BF070A", "versionEndExcluding": "6.18.38", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9526B150-E2B3-4C6F-8AE5-1AF92B75AD9E", "versionEndExcluding": "7.1.3", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.11:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7AD3510E-E8FA-47F3-9AD5-D8EA4A2719D1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.11:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A330B043-47EA-4D06-82BF-153A1735FC11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.11:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F0EE963C-B36C-4143-96A9-65BCA7D8F2EF"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.11:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B511E2F6-2917-4797-8909-8F7EA4870C7B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.11:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E9FA9D80-C790-41EA-8A21-DF7B170465E0"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}