CVE-2023-52587

A hard lockup flaw was found in the Linux kernel’s IPoIB driver in how a user triggers the ipoib_mcast_join_task() function, caused by invalid priv->multicast_list locking. This flaw allows a local user to crash the system.

Mitigation

To mitigate this issue, prevent module ib_core from being loaded. Please see <https://access.redhat.com/solutions/41278&gt; for information on blacklisting a kernel module to prevent it from loading automatically.