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CVE-2026-98443: Linux

7.8

CVSS 3.1

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Атакува се

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Време до експлоатация

Атакува се локално, без особени условия, без вход и след действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: xfs: fix cursor and pointer handling when recovering iunlink buckets LOLLM pointed out a bug in xlog_recover_iunlink_bucket: 1. We don't null out prev_ip after releasing it, which can lead to UAF problems if the inodegc flush call in the loop fails. at which point I noticed even more bugs: 2. If the inodegc flush inside the loop fails, we also leak @ip. 3. We set prev_agino to agino having already advanced agino, which results in inodes with i_prev_unlinked set to itself. 4. If we exit the bottom of the loop with prev_ip set, then prev_ip aliases ip and we also set its i_prev_unlinked to itself. Bugs 3 and 4 introduce loops into the unlinked list, though these loops don't surface because we immediately flush each unlinked inode after loading it. Fix all of these issues.

    Засегнати продукти

    • Linux Linux: 04755d2e5821b3afbaadd09fe5df58d04de36484 преди 8cfde7b2fb7288f4f6b90293e8702ff897c682fe; 04755d2e5821b3afbaadd09fe5df58d04de36484 преди 47a948ba653a463d429e02fda2f06a3d6b78666d; 04755d2e5821b3afbaadd09fe5df58d04de36484 преди 8c9d5b8a96d6b93eb24e07b4163c89341ba29bd1; 04755d2e5821b3afbaadd09fe5df58d04de36484 преди 66a2179d02668f8df44b1a249899006f3ba38ea0; 04755d2e5821b3afbaadd09fe5df58d04de36484 преди 961c717e6bf0e53c2c2b1fe4aef1add9390fedab; 04755d2e5821b3afbaadd09fe5df58d04de36484 преди 65f39d09d73718611cee40399179323b5d4ead00
    • Linux Linux: 6.0; преди 6.0; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.55 до 6.18.*; 7.2.9 до 7.2.*; от 7.3 нататък

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98443: Linux | freedomonline.bg