CVE-2026-80643 EDAC/igen6: Fix call trace due to missing release()
A missing release function in the Linux kernel EDAC driver causes a call trace and potential crash when unloading the module.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80643?
CVE-2026-80643 is a vulnerability in Linux, published on 28 Aug 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:
EDAC/igen6: Fix call trace due to missing release()
When unloading the igen6_edac driver, there is a call trace:
Device '(null)' does not have a release() function, it is broken and must be fixed. See Documentation/core-api/kobject.rst. WARNING: drivers/base/core.c:2567 at device_release+0x84/0x90, CPU#5: rmmod/127209 ... RIP: 0010:device_release+0x84/0x90 Call Trace: <TASK> kobject_put+0x8c/0x220 put_device+0x17/0x30 igen6_unregister_mcis+0xa2/0xe0 [igen6_edac] igen6_remove+0x82/0xb0 [igen6_edac] ...
Fix the call trace by providing empty release() functions for the memory controller devices.
Which versions are affected by CVE-2026-80643?
How do I fix CVE-2026-80643?
Apply the vendor's patch.
Is CVE-2026-80643 being exploited?
There is no known exploitation of CVE-2026-80643 in the wild and no public exploit code.
Sources
Also known as AZL-98159, BELL-CVE-2026-80643, DEBIAN-CVE-2026-80643, GHSA-v4h2-gggg-pg57, UBUNTU-CVE-2026-80643.