{"id":"CVE-2026-93140","state":"PUBLISHED","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 <TASK>\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 </TASK>","publishedAt":"2026-09-17T16:11:40.099Z","updatedAt":"2026-10-19T09:06:12.969Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"e6461ef34f91ad7dbffdf912b3d661a7dd892931","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"359cea636f4a74a96c01a8050f155e12840c079a","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"a4c4e38b356ad4c1f90478124922917489137c08","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"8034ddf4751d9143c5ef7eebe3d4f33218fdd378","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"ee477e5204f764444e60699280abf5936c2a6ae6","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"11afe1912140f79d5af3091a54b181ef72fce1a5","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"c4058355d27488a3cd31c60c032335f77c4fdcfc","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"fb0601134c7e51728bd098abc6909315de1e5d86","versionType":"git"},{"version":"c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6","status":"affected","versionType":"git"},{"version":"c005218328597211008a4d33a91e2952798e3556","status":"affected","versionType":"git"},{"version":"1357ed0b4b9db30846377febb40a847d6103c991","status":"affected","versionType":"git"},{"version":"43f4a516b2f5492bc597f3753b693ad8adc62748","status":"affected","versionType":"git"},{"version":"2.6.27.62","status":"affected","lessThan":"2.6.28","versionType":"semver"},{"version":"2.6.32.57","status":"affected","lessThan":"2.6.33","versionType":"semver"},{"version":"3.0.21","status":"affected","lessThan":"3.1","versionType":"semver"},{"version":"3.2.6","status":"affected","lessThan":"3.3","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/udf/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","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/udf/super.c"]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93140.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93140","state":"PUBLISHED","datePublished":"2026-09-17T16:11:40.099Z","dateUpdated":"2026-10-19T09:06:12.969Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.088Z"},"containers":{"cna":{"title":"udf: Mark LVID buffer as uptodate before marking it dirty","descriptions":[{"lang":"en","value":"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 <TASK>\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 </TASK>"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"e6461ef34f91ad7dbffdf912b3d661a7dd892931","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"359cea636f4a74a96c01a8050f155e12840c079a","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"a4c4e38b356ad4c1f90478124922917489137c08","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"8034ddf4751d9143c5ef7eebe3d4f33218fdd378","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"ee477e5204f764444e60699280abf5936c2a6ae6","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"11afe1912140f79d5af3091a54b181ef72fce1a5","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"c4058355d27488a3cd31c60c032335f77c4fdcfc","versionType":"git"},{"version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","status":"affected","lessThan":"fb0601134c7e51728bd098abc6909315de1e5d86","versionType":"git"},{"version":"c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6","status":"affected","versionType":"git"},{"version":"c005218328597211008a4d33a91e2952798e3556","status":"affected","versionType":"git"},{"version":"1357ed0b4b9db30846377febb40a847d6103c991","status":"affected","versionType":"git"},{"version":"43f4a516b2f5492bc597f3753b693ad8adc62748","status":"affected","versionType":"git"},{"version":"2.6.27.62","status":"affected","lessThan":"2.6.28","versionType":"semver"},{"version":"2.6.32.57","status":"affected","lessThan":"2.6.33","versionType":"semver"},{"version":"3.0.21","status":"affected","lessThan":"3.1","versionType":"semver"},{"version":"3.2.6","status":"affected","lessThan":"3.3","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/udf/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","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/udf/super.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e6461ef34f91ad7dbffdf912b3d661a7dd892931"},{"url":"https://git.kernel.org/stable/c/359cea636f4a74a96c01a8050f155e12840c079a"},{"url":"https://git.kernel.org/stable/c/a4c4e38b356ad4c1f90478124922917489137c08"},{"url":"https://git.kernel.org/stable/c/8034ddf4751d9143c5ef7eebe3d4f33218fdd378"},{"url":"https://git.kernel.org/stable/c/ee477e5204f764444e60699280abf5936c2a6ae6"},{"url":"https://git.kernel.org/stable/c/11afe1912140f79d5af3091a54b181ef72fce1a5"},{"url":"https://git.kernel.org/stable/c/c4058355d27488a3cd31c60c032335f77c4fdcfc"},{"url":"https://git.kernel.org/stable/c/fb0601134c7e51728bd098abc6909315de1e5d86"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:06:12.969Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncludin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