{"api_version":"1","generated_at":"2026-09-11T04:41:59+00:00","cve":"CVE-2026-80805","urls":{"html":"https://cve.report/CVE-2026-80805","api":"https://cve.report/api/cve/CVE-2026-80805.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80805","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80805"},"summary":{"title":"xfs: validate attr entry pointer before field access","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: validate attr entry pointer before field access\n\nxfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen,\nvaluelen) before checking if the entry pointer itself is within bounds.\nIf nameidx is crafted to point near the end of the buffer, these field\naccesses can read out-of-bounds before the bounds check at\nname_end > buf_end is performed.\n\nAdd explicit bounds checks for entry pointers before accessing their\nfields. Use offsetof() to check that the start of the flexible array\nmember (nameval/name) is within bounds, which ensures all preceding\nfields are safe to access.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 16:18:07","updated_at":"2026-09-04 16:18:07"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211","name":"https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c","name":"https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282","name":"https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde","name":"https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de","name":"https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c","name":"https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4","name":"https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d","name":"https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327","name":"https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80805","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80805","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c84760659dcf237902d4cc997cd5f55cb3b2807f 0f82586741e39926542f621bafa424e237a04fa4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c84760659dcf237902d4cc997cd5f55cb3b2807f 134d82a2b5e3eba3ebf58753a1387b22f26ca1de git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c84760659dcf237902d4cc997cd5f55cb3b2807f 03a12253dd2a036545bdb0110a4e0b8dc70f8e7c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c84760659dcf237902d4cc997cd5f55cb3b2807f e99120b5944a16d0bc27e52b33de78bcdaaabf5c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.267 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.218 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.185 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.154 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.106 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.47 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.11 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.1 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80805","cve":"CVE-2026-80805","epss":"0.001950000","percentile":"0.092850000","score_date":"2026-09-07","updated_at":"2026-09-08 00:05:27"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/xfs/libxfs/xfs_attr_leaf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0f82586741e39926542f621bafa424e237a04fa4","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"134d82a2b5e3eba3ebf58753a1387b22f26ca1de","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"03a12253dd2a036545bdb0110a4e0b8dc70f8e7c","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"e99120b5944a16d0bc27e52b33de78bcdaaabf5c","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"98a42bb9d60d42898c3494de351a1bf508348cde","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"184c1a80421a5b5ddcd262e47980ce2e67fee211","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"9f92e749fc08b7ff3d9da190c4d1b2273745b282","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"c35da2bac6f7cb9a9be73f188b4fcc324615c327","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"},{"lessThan":"b7eea80be25f3334f131d52982b3131aba77b97d","status":"affected","version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/xfs/libxfs/xfs_attr_leaf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.5"},{"lessThan":"5.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.267","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.218","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.185","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.154","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.106","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.47","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.11","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.1","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.267","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.218","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.185","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.154","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.106","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.47","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.11","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.1","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: validate attr entry pointer before field access\n\nxfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen,\nvaluelen) before checking if the entry pointer itself is within bounds.\nIf nameidx is crafted to point near the end of the buffer, these field\naccesses can read out-of-bounds before the bounds check at\nname_end > buf_end is performed.\n\nAdd explicit bounds checks for entry pointers before accessing their\nfields. Use offsetof() to check that the start of the flexible array\nmember (nameval/name) is within bounds, which ensures all preceding\nfields are safe to access."}],"providerMetadata":{"dateUpdated":"2026-09-04T15:13:19.239Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4"},{"url":"https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de"},{"url":"https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c"},{"url":"https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c"},{"url":"https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde"},{"url":"https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211"},{"url":"https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282"},{"url":"https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327"},{"url":"https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d"}],"title":"xfs: validate attr entry pointer before field access","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80805","datePublished":"2026-09-04T15:13:19.239Z","dateReserved":"2026-08-26T14:34:25.794Z","dateUpdated":"2026-09-04T15:13:19.239Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 16:18:07","lastModifiedDate":"2026-09-04 16:18:07","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80805","Ordinal":"1","Title":"xfs: validate attr entry pointer before field access","CVE":"CVE-2026-80805","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80805","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: validate attr entry pointer before field access\n\nxfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen,\nvaluelen) before checking if the entry pointer itself is within bounds.\nIf nameidx is crafted to point near the end of the buffer, these field\naccesses can read out-of-bounds before the bounds check at\nname_end > buf_end is performed.\n\nAdd explicit bounds checks for entry pointers before accessing their\nfields. Use offsetof() to check that the start of the flexible array\nmember (nameval/name) is within bounds, which ensures all preceding\nfields are safe to access.","Type":"Description","Title":"xfs: validate attr entry pointer before field access"}]}}}