CVE-2026-89886 media: intel/ipu6: fix async notifier cleanup leak on parse error
A memory leak in the Intel IPU6 kernel driver allows local attackers to cause a denial of service by triggering a parse error during initialization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-89886?
CVE-2026-89886 is a memory corruption vulnerability in Linux, published on 16 Sep 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: intel/ipu6: fix async notifier cleanup leak on parse error
isys_notifier_init() calls v4l2_async_nf_init() and then adds fwnode remote subdevs in a loop with v4l2_async_nf_add_fwnode_remote(). If an endpoint parse or add fails partway through the loop, it jumps to err_parse and returns without calling v4l2_async_nf_cleanup(), leaking every v4l2_async_connection already added to the notifier's waiting list.
The register-failure path just below already cleans up correctly, and the caller only tears the notifier down (isys_notifier_cleanup()) once isys_notifier_init() has returned success. Clean up the notifier on the parse error path too.
Which versions are affected by CVE-2026-89886?
How do I fix CVE-2026-89886?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-89886 being exploited?
There is no known exploitation of CVE-2026-89886 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-89886, DEBIAN-CVE-2026-89886, GHSA-3gm6-jh34-23qh, UBUNTU-CVE-2026-89886.