CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: ALSA: timer: drain a slave's callback before its master detaches it snd_timer_close_locked() drains the closing instance's own in-flight callback (IFLG_CALLBACK) before freeing it, but not its slaves'. When a master instance is closed, remove_slave_links() clears each slave's ->timer; the slave's own close then reads timer == NULL and takes the branch that skips the drain entirely (snd_timer_stop_slave() also no-ops on a NULL timer). So a slave whose callback is still running when the master is closed is freed underneath the live callback, leading to use-after-free. Drain the slaves too before remove_slave_links() severs them. snd_timer_stop() has already taken this instance off the active list, so no new slave callback can be queued. Take the slaves off the ack list so a pending one can't fire either, then wait for any that is already in flight.
Засегнати продукти
- Linux Linux: 37745918e0e7575bc40f38da93a99b9fa6406224 преди cd461bcfcdf8d6b6b5365941c1d3859f8bc77aa0; 37745918e0e7575bc40f38da93a99b9fa6406224 преди 426c0ff1c433d6030610ad4f9375746dfe931caa; 37745918e0e7575bc40f38da93a99b9fa6406224 преди 2b298997786876b225cff2446e11a0fa6f602f6d; 37745918e0e7575bc40f38da93a99b9fa6406224 преди bdefe1346a8e6b8dc8593406dc2617e985fcbcab
- Linux Linux: 6.12; преди 6.12; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; 7.2 до *
Вид слабост
История
- 10 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-68201
- https://nvd.nist.gov/vuln/detail/CVE-2026-68201
- https://git.kernel.org/stable/c/cd461bcfcdf8d6b6b5365941c1d3859f8bc77aa0
- https://git.kernel.org/stable/c/426c0ff1c433d6030610ad4f9375746dfe931caa
- https://git.kernel.org/stable/c/2b298997786876b225cff2446e11a0fa6f602f6d
- https://git.kernel.org/stable/c/bdefe1346a8e6b8dc8593406dc2617e985fcbcab