In the Linux kernel, the following vulnerability has been resolved:

ALSA: usb-audio: Add sanity check for OOB writes at silencing

At silencing the playback URB packets in the implicit fb mode before the actual playback, we blindly assume that the received packets fit with the buffer size. But when the setup in the capture stream differs from the playback stream (e.g. due to the USB core limitation of max packet size), such an inconsistency may lead to OOB writes to the buffer, resulting in a crash.

For addressing it, add a sanity check of the transfer buffer size at prepare_silent_urb(), and stop the data copy if the received data overflows. Also, report back the transfer error properly from there, too.

Note that this doesn't fix the root cause of the playback error itself, but this merely covers the kernel Oops.

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

Important

A flaw was found in the Linux kernel's bonding driver. A local attacker with low privileges could exploit a use-after-free vulnerability in the `bond_xmit_broadcast()` function. This occurs due to a race condition during concurrent slave enslave/release operations, which can lead to the original socket buffer (skb) being double-freed. Successful exploitation of this flaw can result in a system crash, leading to a denial of service.

CWE-416 - Use After Free

A flaw was found in the Linux kernel's AMD display component. This vulnerability arises from incorrect validation of display mode changes during Display Stream Compression (DSC) processing. A local attacker could exploit this by initiating specific display configuration changes, which may lead to a memory leak and a use-after-free error. This could result in system crashes, denial of service, or potentially allow the attacker to gain elevated privileges.

CWE-1288 - Improper Validation of Consistency within Input

A flaw was found in the Linux kernel's mana network driver. An issue in the error handling of the `add_adev()` function can lead to a use-after-free vulnerability. This occurs when memory is released prematurely but then accessed again, which could allow a local attacker to cause a system crash (denial of service) or potentially gain elevated access (privilege escalation).

CWE-825 - Expired Pointer Dereference

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