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CVE-2026-53320: Linux

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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: nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty() nilfs_ioctl_mark_blocks_dirty() uses bd_oblocknr to detect dead blocks by comparing it with the current block number bd_blocknr. If they differ, the block is considered dead and skipped. However, bd_oblocknr should never be 0 since block 0 typically stores the primary superblock and is never a valid GC target block. A corrupted ioctl request with bd_oblocknr set to 0 causes the comparison to incorrectly match when the lookup returns -ENOENT and sets bd_blocknr to 0, bypassing the dead block check and calling nilfs_bmap_mark() on a non-existent block. This causes nilfs_btree_do_lookup() to return -ENOENT, triggering the WARN_ON(ret == -ENOENT). Fix this by rejecting ioctl requests with bd_oblocknr set to 0 at the beginning of each iteration. [ryusuke: slightly modified the commit message and comments for accuracy]

    Засегнати продукти

    • Linux Linux: 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди e0a0c4903cbba351f0f5b5d104960d3a5b23202f; 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди 9472d37799a0b9ff9b99639f35961ac2f0b3c9be; 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди 65e07964b4b2daf9a54e686cf0fa72d74a9648a8; 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди b88f905d4449b70da6bda547be546e365e44352e; 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди 4525658002be3ad310b16bf8db48c8adb6a55d32; 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди e5ff0ba4b6983cdbcc826efc201e7179ece5d46f; 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди 94094e70fe292c9566502772d4d4d6d6a99204b1; 7942b919f7321f95a777d396ff7894a7a83dc9b0 преди be3e5d10643d3be1cbac9d9939f220a99253f980
    • Linux Linux: 2.6.30; преди 2.6.30; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък

    История

    • 26 юни 2026 Публикувано

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    Първоизточници

    CVE-2026-53320: Linux | freedomonline.bg