CVE-2026-43257 media: cx88: Add missing unmap in snd_cx88_hw_params()
A missing DMA unmap in the cx88 audio driver error path can lead to resource leaks, potentially causing denial of service.
- 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-2026-43257?
CVE-2026-43257 is a medium-severity vulnerability in Linux kernel, published on 6 May 2026. 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: cx88: Add missing unmap in snd_cx88_hw_params()
In error path, add cx88_alsa_dma_unmap() to release resource acquired by cx88_alsa_dma_map().
Weakness: CWE-772
Which versions are affected by CVE-2026-43257?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43257?
Apply the vendor's patch.
Is CVE-2026-43257 being exploited?
There is no known exploitation of CVE-2026-43257 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43257, DEBIAN-CVE-2026-43257, GHSA-j6r6-35jf-jm62, ROOT-OS-DEBIAN-11-CVE-2026-43257, ROOT-OS-UBUNTU-2204-CVE-2026-43257, ROOT-OS-UBUNTU-2404-CVE-2026-43257 and 1 more.