{"id":"CVE-2026-74358","state":"PUBLISHED","title":"ext4: fix fast commit wait/wake bit mapping on 64-bit","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix fast commit wait/wake bit mapping on 64-bit\n\nOn 64-bit, ext4 dynamic inode states live in the upper half of i_flags,\nand ext4_test_inode_state() applies the corresponding +32 offset.\n\nThe fast-commit wait and wake paths open-coded the wait key with the raw\nEXT4_STATE_* value. Add small helpers for the state wait word and bit,\nand use them for the FC_COMMITTING and FC_FLUSHING_DATA waits so the wait\nkey follows the same mapping as the state helpers.","publishedAt":"2026-08-15T05:58:42.789Z","updatedAt":"2026-08-17T05:17:52.469Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"857d32f2618166765ce9306a246d0745afc76859","status":"affected","lessThan":"e82d515092a0cf2bca92f399d5c330c324879cea","versionType":"git"},{"version":"857d32f2618166765ce9306a246d0745afc76859","status":"affected","lessThan":"d06df6e447a8510f86db44b2522d5375362a9499","versionType":"git"},{"version":"857d32f2618166765ce9306a246d0745afc76859","status":"affected","lessThan":"8b3bc93fee6771775243665a0cf31857d6659775","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/ext4.h","fs/ext4/fast_commit.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/ext4.h","fs/ext4/fast_commit.c"]}],"references":["https://git.kernel.org/stable/c/e82d515092a0cf2bca92f399d5c330c324879cea","https://git.kernel.org/stable/c/d06df6e447a8510f86db44b2522d5375362a9499","https://git.kernel.org/stable/c/8b3bc93fee6771775243665a0cf31857d6659775"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74358.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74358","state":"PUBLISHED","datePublished":"2026-08-15T05:58:42.789Z","dateUpdated":"2026-08-17T05:17:52.469Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.887Z"},"containers":{"cna":{"title":"ext4: fix fast commit wait/wake bit mapping on 64-bit","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix fast commit wait/wake bit mapping on 64-bit\n\nOn 64-bit, ext4 dynamic inode states live in the upper half of i_flags,\nand ext4_test_inode_state() applies the corresponding +32 offset.\n\nThe fast-commit wait and wake paths open-coded the wait key with the raw\nEXT4_STATE_* value. Add small helpers for the state wait word and bit,\nand use them for the FC_COMMITTING and FC_FLUSHING_DATA waits so the wait\nkey follows the same mapping as the state helpers."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"857d32f2618166765ce9306a246d0745afc76859","status":"affected","lessThan":"e82d515092a0cf2bca92f399d5c330c324879cea","versionType":"git"},{"version":"857d32f2618166765ce9306a246d0745afc76859","status":"affected","lessThan":"d06df6e447a8510f86db44b2522d5375362a9499","versionType":"git"},{"version":"857d32f2618166765ce9306a246d0745afc76859","status":"affected","lessThan":"8b3bc93fee6771775243665a0cf31857d6659775","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/ext4.h","fs/ext4/fast_commit.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/ext4.h","fs/ext4/fast_commit.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e82d515092a0cf2bca92f399d5c330c324879cea"},{"url":"https://git.kernel.org/stable/c/d06df6e447a8510f86db44b2522d5375362a9499"},{"url":"https://git.kernel.org/stable/c/8b3bc93fee6771775243665a0cf31857d6659775"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:17:52.469Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}