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CVE-2026-52919: Linux

7.8

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 локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tp_meter counter underflow during shutdown batadv_tp_sender_shutdown() unconditionally decrements the "sending" atomic counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the counter can underflow to -1. Since the sender logic treats any non-zero value as "still sending", a negative value causes the sender kthread to loop indefinitely. This leads to a use-after-free when the interface is removed while the zombie thread is still active. Fix this by using atomic_xchg() to ensure the counter only transitions from 1 to 0 once. [sven: added missing change in batadv_tp_send]

    Засегнати продукти

    • Linux Linux: 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди e75e2ab463b5b34df6b98f94d740aff327ce9f6b; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди abae88fa254f2981d39ac003a7b302528a22af64; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди c66d20a3ff095e3f000551d208ec2606616db15c; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди c1bac194733aabd731aafa6a01350c229e187dba; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 01cefc5923889e29dbb5f281c3d457714ceb9c00; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 90ae3eae06b7b8ab9f6250b9497c860915b4c17b; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди aeae11c5dad9cd0d50723890bdd866f8e6db2e7d; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 94f3b133168d1c49895e7cc6afbcf1cc0b354602
    • Linux Linux: 4.8; преди 4.8; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.142 до 6.6.*; 6.12.92 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

    История

    • 24 юни 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-52919: Linux | freedomonline.bg