CVE-2026-43217 media: iris: gen2: Add sanity check for session stop
A missing sanity check in the Linux kernel iris media driver allows a use-after-free scenario leading to a system crash when stopping a session.
- 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-2026-43217?
CVE-2026-43217 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: iris: gen2: Add sanity check for session stop
In iris_kill_session, inst->state is set to IRIS_INST_ERROR and session_close is executed, which will kfree(inst_hfi_gen2->packet). If stop_streaming is called afterward, it will cause a crash.
Add a NULL check for inst_hfi_gen2->packet before sendling STOP packet to firmware to fix that.
Weakness: CWE-401
Which versions are affected by CVE-2026-43217?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43217?
Apply the vendor's patch.
Is CVE-2026-43217 being exploited?
There is no known exploitation of CVE-2026-43217 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43217, DEBIAN-CVE-2026-43217, GHSA-wq78-4w69-8m35, UBUNTU-CVE-2026-43217.