CVE-2026-53156 nvmem: core: fix use-after-free bugs in error paths
A use-after-free vulnerability in the Linux kernel nvmem core allows attackers to potentially execute code or escalate privileges via error paths.
- 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-2026-53156?
CVE-2026-53156 is a high-severity use after free vulnerability in Linux kernel, published on 25 Jun 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:
nvmem: core: fix use-after-free bugs in error paths
Fix several instances of error paths in which we call __nvmem_device_put() - which may end up freeing the underlying memory and other resources - and then keep on using the nvmem structure. Always put the reference to the nvmem device as the last step before returning the error code.
Weakness: CWE-416
Which versions are affected by CVE-2026-53156?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53156?
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-2026-53156 being exploited?
There is no known exploitation of CVE-2026-53156 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-90480, BELL-CVE-2026-53156, DEBIAN-CVE-2026-53156, GHSA-2wqp-vx6w-rvfx, ROOT-OS-DEBIAN-11-CVE-2026-53156, ROOT-OS-DEBIAN-12-CVE-2026-53156 and 3 more.