CVE-2025-71163 dmaengine: idxd: fix device leaks on compat bind and unbind
A memory leak in the Linux kernel's idxd driver allows attackers to cause a denial of service via compat bind and unbind operations.
- 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-2025-71163?
CVE-2025-71163 is a medium-severity denial of service vulnerability in Linux kernel, published on 25 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: idxd: fix device leaks on compat bind and unbind
Make sure to drop the reference taken when looking up the idxd device as part of the compat bind and unbind sysfs interface.
Weakness: CWE-401
Which versions are affected by CVE-2025-71163?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-71163?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-71163 being exploited?
There is no known exploitation of CVE-2025-71163 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-78443, BELL-CVE-2025-71163, DEBIAN-CVE-2025-71163, GHSA-7pgx-8vw6-gxgv, ROOT-OS-DEBIAN-12-CVE-2025-71163, ROOT-OS-DEBIAN-13-CVE-2025-71163 and 3 more.