CVE-2026-80597 mtd: maps: vmu-flash: fix NULL pointer dereference in initialization
A NULL pointer dereference in the Linux kernel's vmu-flash driver causes a system crash during initialization, leading to 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-2026-80597?
CVE-2026-80597 is a vulnerability in Linux, published on 28 Aug 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:
mtd: maps: vmu-flash: fix NULL pointer dereference in initialization
The mtd_info contains a struct device, which must be linked to its parent. Without this, the initialization of the MTD fails with a NULL pointer dereference.
Which versions are affected by CVE-2026-80597?
How do I fix CVE-2026-80597?
Apply the vendor's patch.
Is CVE-2026-80597 being exploited?
There is no known exploitation of CVE-2026-80597 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-80597, DEBIAN-CVE-2026-80597, GHSA-hmvw-j555-3qxq, UBUNTU-CVE-2026-80597.