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CVE-2026-53368: 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 incorrect nat_entry flag usage f2fs_need_dentry_mark() reads nat_entry flags without mutual exclusion with the checkpoint path, which can result in an incorrect inode block marking state. The scenario is as follows: create & write & fsync 'file A' write checkpoint - f2fs_do_sync_file // inline inode - f2fs_write_inode // inode folio is dirty - f2fs_write_checkpoint - f2fs_flush_merged_writes - f2fs_sync_node_pages - f2fs_fsync_node_pages // no dirty node - f2fs_need_inode_block_update // return true - f2fs_fsync_node_pages // inode dirtied - f2fs_need_dentry_mark //return true - f2fs_flush_nat_entries - f2fs_write_checkpoint end - __write_node_folio // inode with DENT_BIT_SHIFT set SPO, "fsck --dry-run" find inode has already checkpointed but still with DENT_BIT_SHIFT set The state observed by f2fs_need_dentry_mark() can differ from the state observed in __write_node_folio() after acquiring sbi->node_write. The root cause is that the semantics of IS_CHECKPOINTED and HAS_FSYNCED_INODE are only guaranteed after the checkpoint write has fully completed. This patch moves set_dentry_mark() into __write_node_folio() and protects it with the sbi->node_write lock.

    Засегнати продукти

    • Linux Linux: 88bd02c9472a166b706284a34a84f1243322d782 преди bb1275802b482bc5854e434e212589fe253eab22; 88bd02c9472a166b706284a34a84f1243322d782 преди 270c519bca3a59b6140d176415aff16e4e06f9e3; 88bd02c9472a166b706284a34a84f1243322d782 преди bedb710b63ae1bd617e65d0a8cf6cea1200b3753; 88bd02c9472a166b706284a34a84f1243322d782 преди b28a83ea4934215b5de906c3ee4fbfbc651573e0; 88bd02c9472a166b706284a34a84f1243322d782 преди 019f9dda7f66e55eb94cd32e1d3fff5835f73fbc
    • Linux Linux: 3.18; преди 3.18; 6.1.191 до 6.1.*; 6.12.114 до 6.12.*; 6.18.30 до 6.18.*; 7.0.7 до 7.0.*; от 7.1 нататък

    История

    • 19 юли 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-53368: Linux | freedomonline.bg