{"api_version":"1","generated_at":"2026-09-17T20:26:21+00:00","cve":"CVE-2026-93140","urls":{"html":"https://cve.report/CVE-2026-93140","api":"https://cve.report/api/cve/CVE-2026-93140.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93140","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93140"},"summary":{"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>","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:08","updated_at":"2026-09-17 17:18:08"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ee477e5204f764444e60699280abf5936c2a6ae6","name":"https://git.kernel.org/stable/c/ee477e5204f764444e60699280abf5936c2a6ae6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8034ddf4751d9143c5ef7eebe3d4f33218fdd378","name":"https://git.kernel.org/stable/c/8034ddf4751d9143c5ef7eebe3d4f33218fdd378","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e6461ef34f91ad7dbffdf912b3d661a7dd892931","name":"https://git.kernel.org/stable/c/e6461ef34f91ad7dbffdf912b3d661a7dd892931","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fb0601134c7e51728bd098abc6909315de1e5d86","name":"https://git.kernel.org/stable/c/fb0601134c7e51728bd098abc6909315de1e5d86","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c4058355d27488a3cd31c60c032335f77c4fdcfc","name":"https://git.kernel.org/stable/c/c4058355d27488a3cd31c60c032335f77c4fdcfc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/359cea636f4a74a96c01a8050f155e12840c079a","name":"https://git.kernel.org/stable/c/359cea636f4a74a96c01a8050f155e12840c079a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/11afe1912140f79d5af3091a54b181ef72fce1a5","name":"https://git.kernel.org/stable/c/11afe1912140f79d5af3091a54b181ef72fce1a5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a4c4e38b356ad4c1f90478124922917489137c08","name":"https://git.kernel.org/stable/c/a4c4e38b356ad4c1f90478124922917489137c08","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93140","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93140","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d e6461ef34f91ad7dbffdf912b3d661a7dd892931 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d 359cea636f4a74a96c01a8050f155e12840c079a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d a4c4e38b356ad4c1f90478124922917489137c08 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d 8034ddf4751d9143c5ef7eebe3d4f33218fdd378 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d ee477e5204f764444e60699280abf5936c2a6ae6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d 11afe1912140f79d5af3091a54b181ef72fce1a5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d c4058355d27488a3cd31c60c032335f77c4fdcfc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 853a0c25baf96b028de1654bea1e0c8857eadf3d fb0601134c7e51728bd098abc6909315de1e5d86 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c005218328597211008a4d33a91e2952798e3556 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1357ed0b4b9db30846377febb40a847d6103c991 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 43f4a516b2f5492bc597f3753b693ad8adc62748 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.27.62 2.6.28 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.32.57 2.6.33 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.0.21 3.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.2.6 3.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.270 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.221 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/udf/super.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e6461ef34f91ad7dbffdf912b3d661a7dd892931","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"lessThan":"359cea636f4a74a96c01a8050f155e12840c079a","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"lessThan":"a4c4e38b356ad4c1f90478124922917489137c08","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"lessThan":"8034ddf4751d9143c5ef7eebe3d4f33218fdd378","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"lessThan":"ee477e5204f764444e60699280abf5936c2a6ae6","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"lessThan":"11afe1912140f79d5af3091a54b181ef72fce1a5","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"lessThan":"c4058355d27488a3cd31c60c032335f77c4fdcfc","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"lessThan":"fb0601134c7e51728bd098abc6909315de1e5d86","status":"affected","version":"853a0c25baf96b028de1654bea1e0c8857eadf3d","versionType":"git"},{"status":"affected","version":"c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6","versionType":"git"},{"status":"affected","version":"c005218328597211008a4d33a91e2952798e3556","versionType":"git"},{"status":"affected","version":"1357ed0b4b9db30846377febb40a847d6103c991","versionType":"git"},{"status":"affected","version":"43f4a516b2f5492bc597f3753b693ad8adc62748","versionType":"git"},{"lessThan":"2.6.28","status":"affected","version":"2.6.27.62","versionType":"semver"},{"lessThan":"2.6.33","status":"affected","version":"2.6.32.57","versionType":"semver"},{"lessThan":"3.1","status":"affected","version":"3.0.21","versionType":"semver"},{"lessThan":"3.3","status":"affected","version":"3.2.6","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/udf/super.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.3"},{"lessThan":"3.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.270","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.221","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.270","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27.62","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32.57","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.21","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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>"}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:40.099Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}],"title":"udf: Mark LVID buffer as uptodate before marking it dirty","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93140","datePublished":"2026-09-17T16:11:40.099Z","dateReserved":"2026-09-17T16:02:15.088Z","dateUpdated":"2026-09-17T16:11:40.099Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:08","lastModifiedDate":"2026-09-17 17:18:08","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93140","Ordinal":"1","Title":"udf: Mark LVID buffer as uptodate before marking it dirty","CVE":"CVE-2026-93140","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93140","Ordinal":"1","NoteData":"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>","Type":"Description","Title":"udf: Mark LVID buffer as uptodate before marking it dirty"}]}}}