{"id":"CVE-2026-80805","state":"PUBLISHED","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.","publishedAt":"2026-09-04T15:13:19.239Z","updatedAt":"2026-10-19T08:43:58.417Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"0f82586741e39926542f621bafa424e237a04fa4","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"134d82a2b5e3eba3ebf58753a1387b22f26ca1de","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"03a12253dd2a036545bdb0110a4e0b8dc70f8e7c","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"e99120b5944a16d0bc27e52b33de78bcdaaabf5c","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"98a42bb9d60d42898c3494de351a1bf508348cde","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"184c1a80421a5b5ddcd262e47980ce2e67fee211","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"9f92e749fc08b7ff3d9da190c4d1b2273745b282","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"c35da2bac6f7cb9a9be73f188b4fcc324615c327","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"b7eea80be25f3334f131d52982b3131aba77b97d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_attr_leaf.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.267","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.218","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.185","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.154","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_attr_leaf.c"]}],"references":["https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4","https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de","https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c","https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c","https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde","https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211","https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282","https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327","https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80805.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80805","state":"PUBLISHED","datePublished":"2026-09-04T15:13:19.239Z","dateUpdated":"2026-10-19T08:43:58.417Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.794Z"},"containers":{"cna":{"title":"xfs: validate attr entry pointer before field access","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"0f82586741e39926542f621bafa424e237a04fa4","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"134d82a2b5e3eba3ebf58753a1387b22f26ca1de","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"03a12253dd2a036545bdb0110a4e0b8dc70f8e7c","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"e99120b5944a16d0bc27e52b33de78bcdaaabf5c","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"98a42bb9d60d42898c3494de351a1bf508348cde","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"184c1a80421a5b5ddcd262e47980ce2e67fee211","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"9f92e749fc08b7ff3d9da190c4d1b2273745b282","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"c35da2bac6f7cb9a9be73f188b4fcc324615c327","versionType":"git"},{"version":"c84760659dcf237902d4cc997cd5f55cb3b2807f","status":"affected","lessThan":"b7eea80be25f3334f131d52982b3131aba77b97d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_attr_leaf.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.267","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.218","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.185","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.154","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_attr_leaf.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:43:58.417Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.267"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.15.218"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.1.185"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.6.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.12.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.18.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.2.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}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