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CVE-2026-43359: 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: btrfs: fix transaction abort on set received ioctl due to item overflow If the set received ioctl fails due to an item overflow when attempting to add the BTRFS_UUID_KEY_RECEIVED_SUBVOL we have to abort the transaction since we did some metadata updates before. This means that if a user calls this ioctl with the same received UUID field for a lot of subvolumes, we will hit the overflow, trigger the transaction abort and turn the filesystem into RO mode. A malicious user could exploit this, and this ioctl does not even requires that a user has admin privileges (CAP_SYS_ADMIN), only that he/she owns the subvolume. Fix this by doing an early check for item overflow before starting a transaction. This is also race safe because we are holding the subvol_sem semaphore in exclusive (write) mode. A test case for fstests will follow soon.

    Засегнати продукти

    • Linux Linux: dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 преди b9914db13ac15aca3b74544c0bb1a2e0dad1f174; dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 преди b19c0465e4daad5aa8f60552ea0578cf31a11b1e; dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 преди 2e57b8cac2ba0d38aac76c1ecdfd8b899e3581a5; dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 преди d11aefe654a04fc41996d254748d6a38b6b0a7be; dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 преди 41fb97353ff58fa4f31904c343fc8e3df2f7517d; dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 преди 87f2c46003fce4d739138aab4af1942b1afdadac
    • Linux Linux: 3.12; преди 3.12; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.78 до 6.12.*; 6.18.19 до 6.18.*; 6.19.9 до 6.19.*; от 7.0 нататък

    История

    • 8 май 2026 Публикувано

    Други уязвимости в Linux Linux

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    CVE-2026-43359: Linux | freedomonline.bg