{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40167","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.176Z","datePublished":"2025-11-12T10:26:24.498Z","dateUpdated":"2026-05-11T21:44:02.906Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:44:02.906Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: detect invalid INLINE_DATA + EXTENTS flag combination\n\nsyzbot reported a BUG_ON in ext4_es_cache_extent() when opening a verity\nfile on a corrupted ext4 filesystem mounted without a journal.\n\nThe issue is that the filesystem has an inode with both the INLINE_DATA\nand EXTENTS flags set:\n\n    EXT4-fs error (device loop0): ext4_cache_extents:545: inode #15:\n    comm syz.0.17: corrupted extent tree: lblk 0 < prev 66\n\nInvestigation revealed that the inode has both flags set:\n    DEBUG: inode 15 - flag=1, i_inline_off=164, has_inline=1, extents_flag=1\n\nThis is an invalid combination since an inode should have either:\n- INLINE_DATA: data stored directly in the inode\n- EXTENTS: data stored in extent-mapped blocks\n\nHaving both flags causes ext4_has_inline_data() to return true, skipping\nextent tree validation in __ext4_iget(). The unvalidated out-of-order\nextents then trigger a BUG_ON in ext4_es_cache_extent() due to integer\nunderflow when calculating hole sizes.\n\nFix this by detecting this invalid flag combination early in ext4_iget()\nand rejecting the corrupted inode."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/inode.c"],"versions":[{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"4954d297c91d292630ab43ba4d195dc371ce65d3","status":"affected","versionType":"git"},{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"f061f7c331fc16250fc82aa68964f35821687217","status":"affected","versionType":"git"},{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"2e9e10657b04152ed0d6ecae8d0c02a3405e28f5","status":"affected","versionType":"git"},{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"1437c95ab2a28b138d4521653583729f61ccb48b","status":"affected","versionType":"git"},{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"cb6039b68efa547b676a8a10fc4618d9d1865c23","status":"affected","versionType":"git"},{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"de985264eef64be8a90595908f2e6a87946dad34","status":"affected","versionType":"git"},{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"1f5ccd22ff482639133f2a0fe08f6d19d0e68717","status":"affected","versionType":"git"},{"version":"f19d5870cbf72d4cb2a8e1f749dff97af99b071e","lessThan":"1d3ad183943b38eec2acf72a0ae98e635dc8456b","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/inode.c"],"versions":[{"version":"3.8","status":"affected"},{"version":"0","lessThan":"3.8","status":"unaffected","versionType":"semver"},{"version":"5.4.301","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.246","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.196","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.158","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.114","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.55","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.5","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.4.301"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.10.246"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.15.196"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.1.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.6.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.12.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.17.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/4954d297c91d292630ab43ba4d195dc371ce65d3"},{"url":"https://git.kernel.org/stable/c/f061f7c331fc16250fc82aa68964f35821687217"},{"url":"https://git.kernel.org/stable/c/2e9e10657b04152ed0d6ecae8d0c02a3405e28f5"},{"url":"https://git.kernel.org/stable/c/1437c95ab2a28b138d4521653583729f61ccb48b"},{"url":"https://git.kernel.org/stable/c/cb6039b68efa547b676a8a10fc4618d9d1865c23"},{"url":"https://git.kernel.org/stable/c/de985264eef64be8a90595908f2e6a87946dad34"},{"url":"https://git.kernel.org/stable/c/1f5ccd22ff482639133f2a0fe08f6d19d0e68717"},{"url":"https://git.kernel.org/stable/c/1d3ad183943b38eec2acf72a0ae98e635dc8456b"}],"title":"ext4: detect invalid INLINE_DATA + EXTENTS flag combination","x_generator":{"engine":"bippy-1.2.0"}}}}