Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Important

A flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) USB audio subsystem. An inconsistency in how USB audio playback and capture streams are handled can lead to an out-of-bounds write to a memory buffer. This can result in a system crash, causing a denial of service for a local user.

CWE-787 - Out-of-bounds Write

A flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) aloop driver. This Use-After-Free (UAF) vulnerability occurs when loopback_check_format() stops the capture side during a format change, while a concurrent close operation detaches or frees the runtime. An attacker could potentially exploit this to cause a system crash or achieve arbitrary code execution.

CWE-364 - Signal Handler Race Condition

A flaw was found in the Linux kernel's RDMA/mlx5 component. An error path fall-through in the `mlx5_ib_dev_res_srq_init()` function, specifically when `ib_create_srq()` fails, can lead to the use of freed memory and error pointers. This memory corruption vulnerability could result in system instability, denial of service, or potentially arbitrary code execution.

CWE-825 - Expired Pointer Dereference