CVE-2026-98325 wifi: mac80211: set up the TX info early to fix failure paths
A memory handling flaw in the Linux kernel Wi-Fi subsystem can lead to resource leaks or crashes during transmission failures, requiring a kernel patch.
- 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-2026-98325?
CVE-2026-98325 is a memory corruption 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: set up the TX info early to fix failure paths
The previous commit 2c51457d930f ("wifi: mac80211: free ack status frame on TX header build failure") cleaned up the leak, but still left the code a bit messy and the failed SKB didn't get reported to userspace.
Fix this up by initialising skb->cb[] earlier, which allows using ieee80211_free_txskb() and therefore reports it for the failure in ieee80211_build_hdr(), and unifies the ieee80211_skb_resize() failure path with it.
Which versions are affected by CVE-2026-98325?
How do I fix CVE-2026-98325?
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-2026-98325 being exploited?
There is no known exploitation of CVE-2026-98325 in the wild and no public exploit code.
Sources
Also known as AZL-105993, BELL-CVE-2026-98325, DEBIAN-CVE-2026-98325, GHSA-3437-mcr8-jcvh, UBUNTU-CVE-2026-98325.