CVE-2026-31743 nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy
A buffer size error in the ZynqMP nvmem driver allows memory corruption, potentially enabling code execution or privilege escalation.
- 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-2026-31743?
CVE-2026-31743 is a high-severity memory corruption vulnerability in Linux kernel, published on 1 May 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: zynqmp_nvmem: Fix buffer size in DMA and memcpy
Buffer size used in dma allocation and memcpy is wrong. It can lead to undersized DMA buffer access and possible memory corruption. use correct buffer size in dma_alloc_coherent and memcpy.
Weakness: CWE-787
Which versions are affected by CVE-2026-31743?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-31743?
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-2026-31743 being exploited?
There is no known exploitation of CVE-2026-31743 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-31743, DEBIAN-CVE-2026-31743, GHSA-8xxg-55q7-qggv, UBUNTU-CVE-2026-31743.