The kernel packages contain the Linux kernel, the core of any Linux
- A use-after-free flaw was found in the way the Linux kernel's key
management subsystem handled keyring object reference counting in certain
error path of the join_session_keyring() function. A local, unprivileged
user could use this flaw to escalate their privileges on the system.
Red Hat would like to thank the Perception Point research team for
reporting this issue.
All kernel-rt users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. The system must be
rebooted for this update to take effect.