CVE-2026-80974 mfd: sm501: Fix potential memory leaks during remove
A memory leak in the SM501 MFD driver during device removal can lead to resource exhaustion and denial of service.
- 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-2026-80974?
CVE-2026-80974 is a memory corruption vulnerability in Linux, published on 11 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:
mfd: sm501: Fix potential memory leaks during remove
The memory allocated for struct sm501_devdata in sm501_pci_probe() and sm501_plat_probe() is not freed by the corresponding remove functions sm501_pci_remove() and sm501_plat_remove(). Fix that by adding a call to kfree().
Which versions are affected by CVE-2026-80974?
How do I fix CVE-2026-80974?
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-2026-80974 being exploited?
There is no known exploitation of CVE-2026-80974 in the wild and no public exploit code.
Sources
Also known as AZL-100436, BELL-CVE-2026-80974, DEBIAN-CVE-2026-80974, GHSA-hjr6-6hh3-pw85, UBUNTU-CVE-2026-80974.