{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92494","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-16T12:21:13.871Z","datePublished":"2026-09-17T16:10:10.073Z","dateUpdated":"2026-09-17T16:10:10.073Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:10:10.073Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix buffer_head leak in ext4_init_orphan_info\n\next4_init_orphan_info() reads orphan file blocks with ext4_bread()\nand stores the returned buffer_head in oi->of_binfo[i].ob_bh.\n\nIf ext4_bread() succeeds but the orphan block magic or checksum\nvalidation fails, the function jumps to out_free. However, the old\nout_free loop starts releasing buffers from i - 1, so the current\nbuffer_head at index i is skipped.\n\nThis leaks the buffer_head reference obtained by ext4_bread() on the\nbad magic and bad checksum error paths.\n\nFix this by tracking the number of successfully read buffer_heads and\nreleasing exactly those buffer_heads on the error path."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/orphan.c"],"versions":[{"version":"02f310fcf47fa9311d6ba2946a8d19e7d7d11f37","lessThan":"a9a6ec1298f9bc134b2c5db27d25bb10603b7113","status":"affected","versionType":"git"},{"version":"02f310fcf47fa9311d6ba2946a8d19e7d7d11f37","lessThan":"35fc83c65faf7949f5701bb34b20f822560a7718","status":"affected","versionType":"git"},{"version":"02f310fcf47fa9311d6ba2946a8d19e7d7d11f37","lessThan":"74637f7fef030e5fb2e835b7dfeb05efdc48e0fe","status":"affected","versionType":"git"},{"version":"02f310fcf47fa9311d6ba2946a8d19e7d7d11f37","lessThan":"6ec53ccab0d691b3c73e03d930343ca45987e88d","status":"affected","versionType":"git"},{"version":"02f310fcf47fa9311d6ba2946a8d19e7d7d11f37","lessThan":"1399f102d8a1855c1a38506057306ec79d0787d9","status":"affected","versionType":"git"},{"version":"02f310fcf47fa9311d6ba2946a8d19e7d7d11f37","lessThan":"e1e342d9a561c016b8531ec1f4dcefaad9d64954","status":"affected","versionType":"git"},{"version":"02f310fcf47fa9311d6ba2946a8d19e7d7d11f37","lessThan":"05704335803b69c1bfa8637b7ada942bf2ee8a41","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/orphan.c"],"versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"5.15.221","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"5.15","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a9a6ec1298f9bc134b2c5db27d25bb10603b7113"},{"url":"https://git.kernel.org/stable/c/35fc83c65faf7949f5701bb34b20f822560a7718"},{"url":"https://git.kernel.org/stable/c/74637f7fef030e5fb2e835b7dfeb05efdc48e0fe"},{"url":"https://git.kernel.org/stable/c/6ec53ccab0d691b3c73e03d930343ca45987e88d"},{"url":"https://git.kernel.org/stable/c/1399f102d8a1855c1a38506057306ec79d0787d9"},{"url":"https://git.kernel.org/stable/c/e1e342d9a561c016b8531ec1f4dcefaad9d64954"},{"url":"https://git.kernel.org/stable/c/05704335803b69c1bfa8637b7ada942bf2ee8a41"}],"title":"ext4: fix buffer_head leak in ext4_init_orphan_info","x_generator":{"engine":"bippy-1.2.0"}}}}