Expired pointer dereference in Linux kernel - CVE-2026-80944

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an expired pointer dereference in the mwifiex synchronous command response handler when a synchronous command wait is interrupted before a late firmware response is processed. A local user can interrupt a synchronous command wait to cause a denial of service.

The issue was observed during repeated association and disassociation cycles.

Affected software

How to mitigate CVE-2026-80944

External References

• https://git.kernel.org/stable/c/20ee9c03f261bf6ac59331e2ca7b46b23646412a
• https://git.kernel.org/stable/c/b1bbeb8970eeb6c6bf3cd5314138103f7b69446d
• https://git.kernel.org/stable/c/d29a165588b6a0cf7a38db5cbd602aef7ef8c658
• https://git.kernel.org/stable/c/ef06882c7d8a7400b67d0d003b1008093dd589ed

Related Security Bulletins

• Expired pointer dereference in Linux kernel marvell mwifiex driver