Към съдържанието
Търсене

CVE-2026-74593: Linux

Няма оценка

CVSS

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: sched_ext: Take cgroup_lock() first in scx_cgroup_lock() scx_cgroup_lock() write-locks scx_cgroup_ops_rwsem and then takes cgroup_lock(), which can deadlock through kernfs: scx enable/disable cgroup rmdir cpu.weight write ------------------ ------------ ---------------- cgroup_lock() percpu_down_write(rwsem) cgroup_lock() kernfs_get_active() percpu_down_read(rwsem) kernfs_drain() The enable path waits for the rmdir to release cgroup_mutex. The rmdir, deactivating the cpu controller's files, waits in kernfs_drain() for the write's active reference. The write, in scx_group_set_weight(), waits for the rwsem behind the pending writer. Take cgroup_lock() first. The set_* paths take no cgroup locks inside the read side, so a pending write-lock then only waits for read sections that always run to completion, and no dependency from the rwsem back to cgroup_mutex remains.

    Засегнати продукти

    • Linux Linux: a5bd6ba30b3364354269b81ac55c2edca9a96d6d преди 2ca6b43edf83f8fc368cc3094ee5f3b1e8e0b0f0; a5bd6ba30b3364354269b81ac55c2edca9a96d6d преди a054c9ffa9b7a0dffb763837b91ac9d381ec6d10; a5bd6ba30b3364354269b81ac55c2edca9a96d6d преди 5f8b69642d18e1f3e11996707842ac530444e959
    • Linux Linux: 6.18; преди 6.18; 6.18.46 до 6.18.*; 7.1.9 до 7.1.*; от 7.2 нататък

    История

    • 22 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-74593: Linux | freedomonline.bg