CVE-2026-53077 net/rds: Restrict use of RDS/IB to the initial network namespace
Restricts RDS/IB usage to the initial network namespace to prevent improper operation and potential denial of service in other namespaces.
- 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-2026-53077?
CVE-2026-53077 is a high-severity vulnerability in Linux kernel, published on 24 Jun 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: Restrict use of RDS/IB to the initial network namespace
Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces.
Which versions are affected by CVE-2026-53077?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53077?
Apply the vendor's patch.
Is CVE-2026-53077 being exploited?
There is no known exploitation of CVE-2026-53077 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-53077, DEBIAN-CVE-2026-53077, GHSA-8q5h-9r4j-rfj7, ROOT-OS-DEBIAN-11-CVE-2026-53077, ROOT-OS-DEBIAN-12-CVE-2026-53077, ROOT-OS-UBUNTU-2204-CVE-2026-53077 and 2 more.