CVE-2026-90361 wifi: ath11k: fix leak in ath11k_service_ready_ext_event()
A memory leak in the ath11k WiFi driver allows attackers to cause denial of service by triggering error paths during TLV parsing.
- 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-2026-90361?
CVE-2026-90361 is a memory corruption vulnerability in Linux, published on 17 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:
wifi: ath11k: fix leak in ath11k_service_ready_ext_event()
Currently, during ath11k_service_ready_ext_event() processing, svc_rdy_ext.mac_phy_caps can be allocated during TLV parsing. This is a temporary allocation that is freed on the success path, but not on the error path. If parsing succeeds far enough to allocate mac_phy_caps and then fails on a later TLV, the allocation leaks. So free the allocation on the error path.
Compile tested only.
Which versions are affected by CVE-2026-90361?
How do I fix CVE-2026-90361?
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-2026-90361 being exploited?
There is no known exploitation of CVE-2026-90361 in the wild and no public exploit code.
Sources
Also known as AZL-102003, BELL-CVE-2026-90361, DEBIAN-CVE-2026-90361, GHSA-8gr2-cxr8-j22g, UBUNTU-CVE-2026-90361.