CVE-2026-53077
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk2th percentile — higher than 2% of all known CVEs
Summary
A vulnerability in the Linux kernel's RDS/IB module prevents proper operation in network namespaces other than the initial one. This restricts RDS/IB usage to the initial network namespace only.
Risk Assessment
Attempting to use RDS/IB in a non-initial network namespace may lead to unpredictable system behavior, potentially enabling privilege escalation or network isolation breaches.
Recommendation
It is recommended to immediately update the Linux kernel to a version containing the fix that restricts RDS/IB usage to the initial network namespace.
Original NVD description (English source)
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.