CVE-2023-53855

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.5.0-rc3+ #771

Description The Linux kernel contains an issue where the dsa tag 8021q unregister() function is called under rtnl lock() during driver removal when the tagging protocol is set to "ocelot-8021q". This can lead to a system crash, as demonstrated by assertions failing in net/dsa/tag 8021q.c and net/8021q/vlan core.c. The issue occurs during the unbinding process of the driver. The felix tag 8021q teardown() function does not require rtnl lock() to be held, making this a specific problem for the "ocelot-8021q" protocol.

Recommendations Update to Linux kernel version 6.5.0-rc3+ #771 or a later version to resolve this issue.