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CVE-2026-64093: Linux

8.8

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 от съседна мрежа, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: tp_meter: directly shut down timer on cleanup batadv_tp_sender_cleanup() was calling timer_delete_sync() followed by timer_delete() to guard against the timer handler re-arming itself between the two calls. This double-deletion hack relied on the sending status being set to 0 to suppress re-arming. Replace both calls with a single timer_shutdown_sync(). This function both waits for any running timer callback to complete (like timer_delete_sync()) and permanently disarms the timer so it cannot be re-armed afterwards, making re-arming prevention unconditional and self-documenting. The re-arming property is also required because otherwise: 1. context 0 (batadv_tp_recv_ack()) checks in batadv_tp_reset_sender_timer() if sending is still 1 -> it is 2. context 1 changes in batadv_tp_sender_shutdown() sending to 0 and in this process forces the kthread to stop timer in batadv_tp_sender_cleanup() 3. context 0 continues in batadv_tp_reset_sender_timer() and rearms the timer -> but the reference for it is already gone

    Засегнати продукти

    • Linux Linux: 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 00bf4bb9947b1190a8be8d9b6a1bcbfa3707785c; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 74a76634055462833446684fd526d73c290ea43a; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 5bc2d50fb66b46f86543d5153a188eb1486d0b6e; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди f86b20ec8d17d77bddc02c5c86cfa2389d84ecff; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 770bf0a35f0620b526fd4193889d1e77084e4c43; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди 933880a8bc9b4042223a79255c0b1021cdc36991; 33a3bb4a3345bb511f9c69c913da95d4693e2a4e преди d5487249a81ea658717614009c8f46acc5b7101a
    • Linux Linux: 4.8; преди 4.8; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.93 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

    История

    • 19 юли 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-64093: Linux | freedomonline.bg