CVE-2023-54149 — Incorrect Synchronization in Linux

In the Linux kernel, the following vulnerability has been resolved: net: dsa: avoid suspicious RCU usage for synced VLAN-aware MAC addresses When using the felix driver (the only one which supports UC filtering and MC filtering) as a DSA master for a random other DSA switch, one can see the following stack trace when the downstream switch ports join a VLAN-aware bridge: WARNING: suspicious RCU usage net/8021q/vlan_core.c:238 suspicious rcu_dereference_protected() usage! stack backtrace: Work…