{"id":"CVE-2026-93140","revision":"f4321c94e6f34c7192a95d7921d27b0d","records":[{"revision":"f4321c94e6f34c7192a95d7921d27b0d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93140","aliases":[],"title":"udf: Mark LVID buffer as uptodate before marking it dirty","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nudf: Mark LVID buffer as uptodate before marking it dirty\n\nWhen an I/O error occurs while writing the Logical Volume Integrity\nDescriptor (LVID) buffer to the block device, the block layer's completion\nhandler (`end_buffer_write_sync()`) clears the `BH_Uptodate` flag on the\nbuffer. However, the buffer still contains valid LVID data in memory. If\nthe filesystem is subsequently remounted read-write or synced,\n`udf_open_lvid()` or `udf_sync_fs()` will modify the LVID buffer and call\n`mark_buffer_dirty()`. This triggers a spurious\n`WARN_ON_ONCE(!buffer_uptodate(bh))` warning in `mark_buffer_dirty()`\nbecause the buffer is not marked uptodate, even though its in-memory\ncontents are valid and are about to be overwritten.\n\nTo prevent this spurious warning, unconditionally set the `BH_Uptodate`\nflag before calling `mark_buffer_dirty()` in `udf_open_lvid()` and\n`udf_sync_fs()`. This acknowledges that the in-memory buffer is valid and\nmatches the workaround previously applied to `udf_close_lvid()` in commit\n853a0c25baf9 (\"udf: Mark LVID buffer as uptodate before marking it dirty\").\nExtending this workaround ensures consistent behavior across all LVID\nupdates.\n\nBuffer I/O error on dev loop0, logical block 128, lost sync page write\n------------[ cut here ]------------\n!buffer_uptodate(bh)\nWARNING: fs/buffer.c:1087 at mark_buffer_dirty+0x299/0x410 fs/buffer.c:1087\n...\nCall Trace:\n \n udf_open_lvid+0x369/0x5b0 fs/udf/super.c:2078\n udf_reconfigure+0x336/0x540 fs/udf/super.c:679\n reconfigure_super+0x232/0x8f0 fs/super.c:1080\n vfs_cmd_reconfigure fs/fsopen.c:268 [inline]\n vfs_fsconfig_locked+0x171/0x320 fs/fsopen.c:297\n __do_sys_fsconfig fs/fsopen.c:463 [inline]\n __se_sys_fsconfig+0x6b9/0x810 fs/fsopen.c:350\n do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94\n ","state":0,"publishedAt":"2026-09-17T16:11:40.099+00:00","modifiedAt":"2026-10-19T09:06:12.969+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/udf/super.c\"\n ],\n \"versions\": [\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"e6461ef34f91ad7dbffdf912b3d661a7dd892931\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"359cea636f4a74a96c01a8050f155e12840c079a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"a4c4e38b356ad4c1f90478124922917489137c08\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"8034ddf4751d9143c5ef7eebe3d4f33218fdd378\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"ee477e5204f764444e60699280abf5936c2a6ae6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"11afe1912140f79d5af3091a54b181ef72fce1a5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"c4058355d27488a3cd31c60c032335f77c4fdcfc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"853a0c25baf96b028de1654bea1e0c8857eadf3d\",\n \"lessThan\": \"fb0601134c7e51728bd098abc6909315de1e5d86\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c005218328597211008a4d33a91e2952798e3556\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1357ed0b4b9db30846377febb40a847d6103c991\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"43f4a516b2f5492bc597f3753b693ad8adc62748\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2.6.27.62\",\n \"lessThan\": \"2.6.28\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"2.6.32.57\",\n \"lessThan\": \"2.6.33\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"3.0.21\",\n \"lessThan\": \"3.1\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"3.2.6\",\n \"lessThan\": \"3.3\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/udf/super.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.3\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.3\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.270\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.221\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.157\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.110\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.52\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.6\",\n \"lessThanOrEqual\": \"7.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/e6461ef34f91ad7dbffdf912b3d661a7dd892931","https://git.kernel.org/stable/c/359cea636f4a74a96c01a8050f155e12840c079a","https://git.kernel.org/stable/c/a4c4e38b356ad4c1f90478124922917489137c08","https://git.kernel.org/stable/c/8034ddf4751d9143c5ef7eebe3d4f33218fdd378","https://git.kernel.org/stable/c/ee477e5204f764444e60699280abf5936c2a6ae6","https://git.kernel.org/stable/c/11afe1912140f79d5af3091a54b181ef72fce1a5","https://git.kernel.org/stable/c/c4058355d27488a3cd31c60c032335f77c4fdcfc","https://git.kernel.org/stable/c/fb0601134c7e51728bd098abc6909315de1e5d86"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93140","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93140","identifiers":["CVE-2026-93140"]},"retained":false,"historicalAffected":[]}],"coverage":[]}