CVE-2026-31506 net: bcmasp: fix double free of WoL irq
A double free vulnerability in the Linux kernel's BCMASP network driver allows attackers to cause denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-31506?
CVE-2026-31506 is a high-severity use after free vulnerability in Linux kernel, published on 22 Apr 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:
net: bcmasp: fix double free of WoL irq
We do not need to free wol_irq since it was instantiated with devm_request_irq(). So devres will free for us.
Weakness: CWE-415
Which versions are affected by CVE-2026-31506?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-31506?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-31506 being exploited?
There is no known exploitation of CVE-2026-31506 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-83222, BELL-CVE-2026-31506, DEBIAN-CVE-2026-31506, GHSA-h3fw-w5gr-3mxr, ROOT-OS-UBUNTU-2404-CVE-2026-31506, UBUNTU-CVE-2026-31506.