CVE-2026-80616: ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns()
In the Linux kernel, the following vulnerability has been resolved:
ieee802154: Avoid calling WARNON() on -ENOMEM in cfg802154switchnetns()
It's pointless to call WARNON() in case of an allocation failure in devchangenetnamespace() and devicerename(), since it only leads to useless splats caused by deliberate fault injections, so avoid it.
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Affected Software
Event History
Frequently Asked Questions
Does this issue indicate a security impact from the allocation failure itself?
The available information describes removal of WARN_ON() calls for -ENOMEM allocation failures because they produce useless kernel warnings, particularly during deliberate fault injection. It does not describe privilege escalation, information disclosure, denial of service, or another security impact.
How was this condition identified?
It was found by the Linux Verification Center using Syzkaller. The description specifically notes deliberate fault injection as a scenario that can trigger the unnecessary warning splats.
What should operators look for if they suspect they are affected?
Look for kernel WARN_ON-related splats associated with -ENOMEM failures while changing network namespaces or renaming devices in the IEEE 802.15.4 configuration path. The supplied information does not provide affected kernel versions or additional detection indicators.