Към съдържанието
Търсене

CVE-2026-89485: Linux

9.8

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 по мрежата, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: lockd: pin next file across nlm_inspect_file lock-drop nlm_traverse_files() pins the current file with f_count++ across a mutex_unlock for nlm_inspect_file(), but nothing pins the saved next pointer. A concurrent nlm_release_file() can kfree the next file during the unlock window, and the iterator dereferences freed memory on the next loop step. Pin both current and next before the lock-drop. Advance by swapping the pinned cursors at the end of each iteration so next is always held alive across the unlock. Always call nlm_file_release() after dropping the iteration pin, regardless of whether the file matched the predicate. Use nlm_file_inuse(), which does a live walk of the inode lock list, rather than the cached f_locks field, so skipped files that never ran nlm_inspect_file() are evaluated correctly. Because every file in a hash bucket is now pinned and released, files skipped by the is_failover_file predicate that have no locks, blocks, shares, or external references are deleted during traversal. The old code never evaluated skipped files for cleanup. The new behavior is intentional: such files are stale and should not persist in the table.

    Засегнати продукти

    • Linux Linux: 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди e3c413f789eaf0170275c7eba523ead73d963f30; 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди 08a455f87b14c7ff22ae3fdadda62a796a3a5572; 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди 550c19222c7132c888e23c9d89079ba1c9bc4cca; 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди 350087f231c11efcd288c310707c40eab63ca583; 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди c24bdb7df2f34bdc38ca8a73796f5acb40f1830c; 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди 41f0a6d31615fcae261bf28a0aa50050dc93a401; 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди e999a88133654c6dfc68487fb49da5f20dfa2d4f; 01df9c5e918ae5559f2d96da0143f8bfbb9e6171 преди 526c49cff3f72c3ec74752016380c7567040581b
    • Linux Linux: 2.6.18; преди 2.6.18; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 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

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89485: Linux | freedomonline.bg