CVE-2025-68344 ALSA: wavefront: Fix integer overflow in sample size validation
An integer overflow in the ALSA wavefront driver allows local attackers to cause denial of service or potentially execute code via crafted sample sizes.
- 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-2025-68344?
CVE-2025-68344 is a vulnerability in Linux, published on 24 Dec 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:
ALSA: wavefront: Fix integer overflow in sample size validation
The wavefront_send_sample() function has an integer overflow issue when validating sample size. The header->size field is u32 but gets cast to int for comparison with dev->freemem
Fix by using unsigned comparison to avoid integer overflow.
Which versions are affected by CVE-2025-68344?
How do I fix CVE-2025-68344?
Apply the vendor's patch.
Is CVE-2025-68344 being exploited?
There is no known exploitation of CVE-2025-68344 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68344, DEBIAN-CVE-2025-68344, GHSA-q9mf-8c54-r9jh, ROOT-OS-DEBIAN-11-CVE-2025-68344, ROOT-OS-DEBIAN-12-CVE-2025-68344, ROOT-OS-DEBIAN-13-CVE-2025-68344 and 3 more.