CVE-2026-43142 media: iris: gen1: Destroy internal buffers after FW releases
A memory leak in the Linux kernel iris media driver allows attackers to exhaust system memory by triggering resolution changes, leading to 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-2026-43142?
CVE-2026-43142 is a medium-severity denial of service 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: iris: gen1: Destroy internal buffers after FW releases
After the firmware releases internal buffers, the driver was not destroying them. This left stale allocations that were no longer used, especially across resolution changes where new buffers are allocated per the updated requirements. As a result, memory was wasted until session close.
Destroy internal buffers once the release response is received from the firmware.
Weakness: CWE-401
Which versions are affected by CVE-2026-43142?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43142?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-43142 being exploited?
There is no known exploitation of CVE-2026-43142 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43142, DEBIAN-CVE-2026-43142, GHSA-cq62-68rx-vm58, UBUNTU-CVE-2026-43142.