CVE-2025-38679

/// Technical description

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

media: venus: Fix OOB read due to missing payload bound check

Currently, The event_seq_changed() handler processes a variable number

of properties sent by the firmware. The number of properties is indicated

by the firmware and used to iterate over the payload. However, the

payload size is not being validated against the actual message length.

This can lead to out-of-bounds memory access if the firmware provides a

property count that exceeds the data available in the payload. Such a

condition can result in kernel crashes or potential information leaks if

memory beyond the buffer is accessed.

Fix this by properly validating the remaining size of the payload before

each property access and updating bounds accordingly as properties are

parsed.

This ensures that property parsing is safely bounded within the received

message buffer and protects against malformed or malicious firmware

behavior.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References