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CVE-2026-89645: 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: btrfs: drop recovered reloc root refs on recovery failure During relocation recovery, each fs root gets a reference to its relocation root. If loading or adding a later root fails, or if the first transaction commit fails, btrfs_recover_relocation() jumps to out_unset before merge_reloc_roots() and clean_dirty_subvols(). put_reloc_control() drops the list-owned relocation root references, but it does not clear fs_root->reloc_root or drop the references owned by those pointers. Mount cleanup only drops them when BTRFS_FS_ERROR is set, so an error such as -ENOMEM while processing a later root can leave references behind. Keep temporary references to the fs roots associated during recovery. On failure, clear their reloc_root pointers and drop the corresponding references. Once the first transaction commit succeeds, drop only the temporary fs root references and let the normal merge and cleanup paths handle the relocation roots. Fault injection on a pending-relocation image confirmed the cleanup gap. With an injected first-commit failure, 25 fs roots had reloc_root set with fs_error=0. With this fix, the same failure path drops that count to 0 before mount fails.

    Засегнати продукти

    • Linux Linux: f44deb7442edf42abee6be25fca7e3e86061b4c9 преди f671ffc678e0247aad77126670cb28c766d6ab3d; f44deb7442edf42abee6be25fca7e3e86061b4c9 преди 7b8c6af17287899a5d00c70566831feac237d192; f44deb7442edf42abee6be25fca7e3e86061b4c9 преди 2256d6dc5b88841a8a8b4fd9a9f04730705fb6fd; f44deb7442edf42abee6be25fca7e3e86061b4c9 преди 8a64baeb5bbb706b83d2235c1e39f5b77183817f; f44deb7442edf42abee6be25fca7e3e86061b4c9 преди 4d43107e807bcd92621106b07f5011411c6341a8; f44deb7442edf42abee6be25fca7e3e86061b4c9 преди 6d8ba4572922e336f0b59a80751b018e1e135164
    • Linux Linux: 5.7; преди 5.7; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

    История

    • 11 септември 2026 Публикувано

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    CVE-2026-89645: Linux | freedomonline.bg