CVE-2026-97491 net/rds: Don't sleep inside rds_ib_conn_path_shutdown
A flaw in the Linux kernel RDS module causes a hang during connection shutdown, leading to denial of service for local or adjacent attackers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-97491?
CVE-2026-97491 is a denial of service vulnerability in Linux, published on 24 Sep 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:
net/rds: Don't sleep inside rds_ib_conn_path_shutdown
New rds rdma self tests exposed a hang when tearing down the ib network configs. This is caused by the shutdown worker thread sleeping on the wait_event call, which blocks other work items in the queue. Fix this by changing wait_event to wait_event timeout, and looping until the wait check succeeds.
Which versions are affected by CVE-2026-97491?
How do I fix CVE-2026-97491?
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-2026-97491 being exploited?
There is no known exploitation of CVE-2026-97491 in the wild and no public exploit code.
Sources
Also known as AZL-103895, BELL-CVE-2026-97491, DEBIAN-CVE-2026-97491, GHSA-rj2j-ff3c-jjm2, UBUNTU-CVE-2026-97491.