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: Fix UAF at snd_timer_user_params() At releasing a timer object, e.g. when a userspace timer (CONFIG_SND_UTIMER) gets closed and snd_timer_free() is called, it tries to detach the timer instances and release the resources. However, it's still possible that other in-flight tasks are holding the timer instance where the to-be-deleted timer object is associated, and this may lead to racy accesses. Fortunately, most of ioctls dealing with the timer instance list already have the protection with register_mutex, and this also avoids such races. But, SNDRV_TIMER_IOCTL_PARAMS isn't protected, hence the concurrent ioctl may lead to use-after-free. This patch just adds the guard with register_mutex to protect snd_timer_user_params() for covering the code path as a quick workaround. It's no hot-path but rather a rarely issued ioctl, so the performance penalty doesn't matter.
Засегнати продукти
- Linux Linux: 37745918e0e7575bc40f38da93a99b9fa6406224 преди 38034d04d4a75bbca01df2b313ced0bcd0fa3242; 37745918e0e7575bc40f38da93a99b9fa6406224 преди 3d39da65b5c422c5e5afb7d5651b0698d060a827; 37745918e0e7575bc40f38da93a99b9fa6406224 преди 306427adf9b97e29e5958cb9cf3096c6151fc9ff; 37745918e0e7575bc40f38da93a99b9fa6406224 преди 053a401b592be424fea9d57c789f66cd5d8cec11
- Linux Linux: 6.12; преди 6.12; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък
- Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: всички версии
Вид слабост
История
- 25 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-53192
- https://nvd.nist.gov/vuln/detail/CVE-2026-53192
- https://git.kernel.org/stable/c/38034d04d4a75bbca01df2b313ced0bcd0fa3242
- https://git.kernel.org/stable/c/3d39da65b5c422c5e5afb7d5651b0698d060a827
- https://git.kernel.org/stable/c/306427adf9b97e29e5958cb9cf3096c6151fc9ff
- https://git.kernel.org/stable/c/053a401b592be424fea9d57c789f66cd5d8cec11
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html