CVE-2026-43263 media: chips-media: wave5: Fix Null reference while testing fluster
A null pointer dereference in the Linux kernel's wave5 media driver can cause a denial of service when multiple decoder instances are created or destroyed.
- 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-2026-43263?
CVE-2026-43263 is a high-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: chips-media: wave5: Fix Null reference while testing fluster
When multi instances are created/destroyed, many interrupts happens and structures for decoder are removed. "struct vpu_instance" this structure is shared for all flow in the decoder, so if the structure is not protected by lock, Null dereference could happens sometimes. IRQ Handler was spilt to two phases and Lock was added as well.
Weakness: CWE-476
Which versions are affected by CVE-2026-43263?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43263?
Apply the vendor's patch.
Is CVE-2026-43263 being exploited?
There is no known exploitation of CVE-2026-43263 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43263, DEBIAN-CVE-2026-43263, GHSA-96q3-68gv-9r3h, ROOT-OS-DEBIAN-13-CVE-2026-43263, ROOT-OS-UBUNTU-2404-CVE-2026-43263, UBUNTU-CVE-2026-43263.