Связанные уязвимости
[REJECTED CVE] A vulnerability in the Linux kernel's driver core related to uevent_show() and driver detach has been identified. The issue involved a race condition where uevent_show() attempted to dereference dev->driver->name, leading to a potential deadlock due to improper locking. While this could cause system instability, an attacker would need the ability to manipulate device attributes and timing precisely, making exploitation impractical.
In the Linux kernel, the following vulnerability has been resolved: driver core: Fix uevent_show() vs driver detach race uevent_show() wants to de-reference dev->driver->name. There is no clean way for a device attribute to de-reference dev->driver unless that attribute is defined via (struct device_driver).dev_groups. Instead, the anti-pattern of taking the device_lock() in the attribute handler risks deadlocks with code paths that remove device attributes while holding the lock. This deadlock is typically invisible to lockdep given the device_lock() is marked lockdep_set_novalidate_class(), but some subsystems allocate a local lockdep key for @dev->mutex to reveal reports of the form: ====================================================== WARNING: possible circular locking dependency detected 6.10.0-rc7+ #275 Tainted: G OE N ------------------------------------------------------ modprobe/2374 is trying to acquire lock: ffff8c2270070de0 (kn->active#6){++++}-{...
ELSA-2024-12682: Unbreakable Enterprise kernel security update (IMPORTANT)
ELSA-2024-12779: Unbreakable Enterprise kernel security update (IMPORTANT)