CVE-2021-3923 Information

Description

A flaw was found in the Linux kernel’s implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information it can be further used to defeat existing kernel protection mechanisms.

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2019643 https://lore.kernel.org/all/20220204100036.GA12348@kili/