CVE-2026-68468 mtd: virt-concat: free duplicate generated name
A memory leak in the Linux kernel's MTD virtual concatenation driver allows local attackers to cause 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-2026-68468?
CVE-2026-68468 is a memory corruption vulnerability in Linux, published on 15 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: virt-concat: free duplicate generated name
Every MTD registration runs mtd_virt_concat_create_join(). Once a virtual concat has already been registered, the function builds the same name again and takes the equal-name branch. That branch skips to the next item without freeing the newly allocated string.
Free the temporary name before continuing.
Which versions are affected by CVE-2026-68468?
How do I fix CVE-2026-68468?
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-2026-68468 being exploited?
There is no known exploitation of CVE-2026-68468 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-68468, GHSA-p8fh-7hcc-pcwh, UBUNTU-CVE-2026-68468.