CVE-2026-98337 wifi: mac80211: don't start a ROC while scanning
A race condition in the Linux kernel Wi-Fi subsystem can trigger a kernel warning and potential denial of service when scanning overlaps with off-channel operations.
- 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-2026-98337?
CVE-2026-98337 is a vulnerability in Linux, published on 6 Oct 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:
wifi: mac80211: don't start a ROC while scanning
The ROC work can be pending when a scan starts (which requires ROC list to be empty, but that's possible), and then a new ROC can be added to the list and the work will pick it up.
Avoid starting that ROC if a scan made it between things, as otherwise we'll hit a warning later:
WARNING: net/mac80211/offchannel.c:404 at ieee80211_start_next_roc+0x256/0x2d0 Workqueue: events_unbound cfg80211_wiphy_work Call Trace: __ieee80211_scan_completed+0x4fd/0xe40 net/mac80211/scan.c:537 ieee80211_scan_work+0x472/0x1ff0 net/mac80211/scan.c:1193 cfg80211_wiphy_work+0x410/0x570 net/wireless/core.c:513
Which versions are affected by CVE-2026-98337?
How do I fix CVE-2026-98337?
Apply the vendor's patch.
Is CVE-2026-98337 being exploited?
There is no known exploitation of CVE-2026-98337 in the wild and no public exploit code.
Sources
Also known as AZL-106125, BELL-CVE-2026-98337, DEBIAN-CVE-2026-98337, GHSA-pccj-pwww-vq83, UBUNTU-CVE-2026-98337.