CVE-2025-38679 media: venus: Fix OOB read due to missing payload bound check
A missing bounds check in the Linux kernel Venus media driver allows out-of-bounds reads, potentially causing crashes or information leaks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-38679?
CVE-2025-38679 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 4 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2025-38679?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38679?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-38679 being exploited?
There is no known exploitation of CVE-2025-38679 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-66863, AZL-73821, BELL-CVE-2025-38679, DEBIAN-CVE-2025-38679, GHSA-5hm5-7p65-wrq6, ROOT-OS-DEBIAN-11-CVE-2025-38679 and 4 more.