CVE-2026-31565 RDMA/irdma: Fix deadlock during netdev reset with active connections
A deadlock in the Linux kernel's irdma driver during network device resets with active RDMA connections can cause a denial of service.
- 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-2026-31565?
CVE-2026-31565 is a medium-severity denial of service vulnerability in Linux kernel, published on 24 Apr 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:
RDMA/irdma: Fix deadlock during netdev reset with active connections
Resolve deadlock that occurs when user executes netdev reset while RDMA applications (e.g., rping) are active. The netdev reset causes ice driver to remove irdma auxiliary driver, triggering device_delete and subsequent client removal. During client removal, uverbs_client waits for QP reference count to reach zero while cma_client holds the final reference, creating circular dependency and indefinite wait in iWARP mode. Skip QP reference count wait during device reset to prevent deadlock.
Weakness: CWE-667
Which versions are affected by CVE-2026-31565?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-31565?
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-2026-31565 being exploited?
There is no known exploitation of CVE-2026-31565 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-83711, BELL-CVE-2026-31565, DEBIAN-CVE-2026-31565, GHSA-hp4x-9rgh-5pgm, ROOT-OS-DEBIAN-12-CVE-2026-31565, ROOT-OS-DEBIAN-13-CVE-2026-31565 and 3 more.