{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "853a0c25baf96b028de1654bea1e0c8857eadf3d"
            },
            {
              "fixed": "e6461ef34f91ad7dbffdf912b3d661a7dd892931"
            },
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            },
            {
              "fixed": "11afe1912140f79d5af3091a54b181ef72fce1a5"
            },
            {
              "fixed": "c4058355d27488a3cd31c60c032335f77c4fdcfc"
            },
            {
              "fixed": "fb0601134c7e51728bd098abc6909315de1e5d86"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6"
            },
            {
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            },
            {
              "last_affected": "1357ed0b4b9db30846377febb40a847d6103c991"
            },
            {
              "last_affected": "43f4a516b2f5492bc597f3753b693ad8adc62748"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
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            },
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            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
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            },
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            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
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            {
              "introduced": "3.0.21"
            },
            {
              "fixed": "3.1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
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              "introduced": "3.2.6"
            },
            {
              "fixed": "3.3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93140.json"
  },
  "details": "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 \u003cTASK\u003e\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 \u003c/TASK\u003e",
  "id": "CVE-2026-93140",
  "modified": "2026-09-19T03:30:57.062784863Z",
  "published": "2026-09-17T16:11:40.099Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11afe1912140f79d5af3091a54b181ef72fce1a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/359cea636f4a74a96c01a8050f155e12840c079a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8034ddf4751d9143c5ef7eebe3d4f33218fdd378"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4c4e38b356ad4c1f90478124922917489137c08"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4058355d27488a3cd31c60c032335f77c4fdcfc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6461ef34f91ad7dbffdf912b3d661a7dd892931"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee477e5204f764444e60699280abf5936c2a6ae6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb0601134c7e51728bd098abc6909315de1e5d86"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93140.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93140"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "udf: Mark LVID buffer as uptodate before marking it dirty"
}