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Test your applicationsThere is no fixed version for Centos:9
kernel-modules-core
.
Note: Versions mentioned in the description apply only to the upstream kernel-modules-core
package and not the kernel-modules-core
package as distributed by Centos
.
See How to fix?
for Centos:9
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
ALSA: timer: Don't take register_mutex with copy_from/to_user()
The infamous mmap_lock taken in copy_from/to_user() can be often problematic when it's called inside another mutex, as they might lead to deadlocks.
In the case of ALSA timer code, the bad pattern is with guard(mutex)(®ister_mutex) that covers copy_from/to_user() -- which was mistakenly introduced at converting to guard(), and it had been carefully worked around in the past.
This patch fixes those pieces simply by moving copy_from/to_user() out of the register mutex lock again.