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CVE-2026-93140: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: udf: Mark LVID buffer as uptodate before marking it dirty When an I/O error occurs while writing the Logical Volume Integrity Descriptor (LVID) buffer to the block device, the block layer's completion handler (`end_buffer_write_sync()`) clears the `BH_Uptodate` flag on the buffer. However, the buffer still contains valid LVID data in memory. If the filesystem is subsequently remounted read-write or synced, `udf_open_lvid()` or `udf_sync_fs()` will modify the LVID buffer and call `mark_buffer_dirty()`. This triggers a spurious `WARN_ON_ONCE(!buffer_uptodate(bh))` warning in `mark_buffer_dirty()` because the buffer is not marked uptodate, even though its in-memory contents are valid and are about to be overwritten. To prevent this spurious warning, unconditionally set the `BH_Uptodate` flag before calling `mark_buffer_dirty()` in `udf_open_lvid()` and `udf_sync_fs()`. This acknowledges that the in-memory buffer is valid and matches the workaround previously applied to `udf_close_lvid()` in commit 853a0c25baf9 ("udf: Mark LVID buffer as uptodate before marking it dirty"). Extending this workaround ensures consistent behavior across all LVID updates. Buffer I/O error on dev loop0, logical block 128, lost sync page write ------------[ cut here ]------------ !buffer_uptodate(bh) WARNING: fs/buffer.c:1087 at mark_buffer_dirty+0x299/0x410 fs/buffer.c:1087 ... Call Trace: <TASK> udf_open_lvid+0x369/0x5b0 fs/udf/super.c:2078 udf_reconfigure+0x336/0x540 fs/udf/super.c:679 reconfigure_super+0x232/0x8f0 fs/super.c:1080 vfs_cmd_reconfigure fs/fsopen.c:268 [inline] vfs_fsconfig_locked+0x171/0x320 fs/fsopen.c:297 __do_sys_fsconfig fs/fsopen.c:463 [inline] __se_sys_fsconfig+0x6b9/0x810 fs/fsopen.c:350 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 </TASK>

    Засегнати продукти

    • Linux Linux: 853a0c25baf96b028de1654bea1e0c8857eadf3d преди e6461ef34f91ad7dbffdf912b3d661a7dd892931; 853a0c25baf96b028de1654bea1e0c8857eadf3d преди 359cea636f4a74a96c01a8050f155e12840c079a; 853a0c25baf96b028de1654bea1e0c8857eadf3d преди a4c4e38b356ad4c1f90478124922917489137c08; 853a0c25baf96b028de1654bea1e0c8857eadf3d преди 8034ddf4751d9143c5ef7eebe3d4f33218fdd378; 853a0c25baf96b028de1654bea1e0c8857eadf3d преди ee477e5204f764444e60699280abf5936c2a6ae6; 853a0c25baf96b028de1654bea1e0c8857eadf3d преди 11afe1912140f79d5af3091a54b181ef72fce1a5; 853a0c25baf96b028de1654bea1e0c8857eadf3d преди c4058355d27488a3cd31c60c032335f77c4fdcfc; 853a0c25baf96b028de1654bea1e0c8857eadf3d преди fb0601134c7e51728bd098abc6909315de1e5d86; c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6; c005218328597211008a4d33a91e2952798e3556; 1357ed0b4b9db30846377febb40a847d6103c991; 43f4a516b2f5492bc597f3753b693ad8adc62748; 2.6.27.62 преди 2.6.28; 2.6.32.57 преди 2.6.33; 3.0.21 преди 3.1; 3.2.6 преди 3.3
    • Linux Linux: 3.3; преди 3.3; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

    История

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-93140: Linux | freedomonline.bg