CVE-2024-35934

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The vulnerability is related to the net/smc component of the Linux kernel. It involves incorrect locking in the smc pnet create pnetids list() function, which can lead to extreme rtnl pressure. Many syzbot reports hint that smc acquires rtnl in netns creation for no good reason. The patch returns early from smc pnet net init() if there is no netdevice yet. The issue is associated with the rtnl mutex and pernet ops rwsem locks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.