CVE-2025-71189 dmaengine: dw: dmamux: fix OF node leak on route allocation failure
A memory leak in the Linux kernel DMA driver allows attackers to cause a denial of service by exhausting system memory.
- 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-2025-71189?
CVE-2025-71189 is a medium-severity memory corruption vulnerability in Linux kernel, published on 31 Jan 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:
dmaengine: dw: dmamux: fix OF node leak on route allocation failure
Make sure to drop the reference taken to the DMA master OF node also on late route allocation failures.
Weakness: CWE-401
Which versions are affected by CVE-2025-71189?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-71189?
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-2025-71189 being exploited?
There is no known exploitation of CVE-2025-71189 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-71189, DEBIAN-CVE-2025-71189, GHSA-hw33-jpqx-4vv6, ROOT-OS-DEBIAN-12-CVE-2025-71189, ROOT-OS-DEBIAN-13-CVE-2025-71189, ROOT-OS-UBUNTU-2404-CVE-2025-71189 and 1 more.