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CVE-2026-46175: Linux

7.1

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: f2fs: fix fsck inconsistency caused by FGGC of node block During FGGC node block migration, fsck may incorrectly treat the migrated node block as fsync-written data. The reproduction scenario: root@vm:/mnt/f2fs# seq 1 2048 | xargs -n 1 ./test_sync // write inline inode and sync root@vm:/mnt/f2fs# rm -f 1 root@vm:/mnt/f2fs# sync root@vm:/mnt/f2fs# f2fs_io gc_range // move data block in sync mode and not write CP SPO, "fsck --dry-run" find inode has already checkpointed but still with DENT_BIT_SHIFT set The root cause is that GC does not clear the dentry mark and fsync mark during node block migration, leading fsck to misinterpret them as user-issued fsync writes. In BGGC mode, node block migration is handled by f2fs_sync_node_pages(), which guarantees the dentry and fsync marks are cleared before writing. This patch move the set/clear of the fsync|dentry marks into __write_node_folio to make the logic clearer, and ensures the fsync|dentry mark is cleared in FGGC.

    Засегнати продукти

    • Linux Linux: da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f преди 3b7a0bbb3444addddb139f42a74ab4492052fa27; da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f преди d1820a5814eadb8e63ab6c7c8d04e28ce49836be; da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f преди 8ac93964658d0649337dcb3f6e38d77f8cdd86f3; da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f преди 8be551f538dc5b64183e27bd45a7a0795263f760; da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f преди e7c6d30169b03307d27c4479563df79c08f3a746; da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f преди c3e238bd1f56993f205ef83889d406dfeaf717a8
    • Linux Linux: 4.7; преди 4.7; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.114 до 6.12.*; 6.18.30 до 6.18.*; 7.0.7 до 7.0.*; от 7.1 нататък

    История

    • 28 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-46175: Linux | freedomonline.bg