In the Linux kernel, the following vulnerability has been resolved: net: dsa: mt7530: fix VLAN traffic leaks PCRMATRIX field was set to all 1's when VLAN filtering is enabled, but was not reset when it is disabled, which may cause traffic leaks: ip link add br0 type bridge vlanfiltering 1 ip link add br1 type bridge vlanfiltering 1 ip link set swp0 master br0 ip link set swp1 master br1 ip link set br0 type bridge vlanfiltering 0 ip link set br1 type bridge vlanfiltering 0 # traffic in br0 and br1 will start leaking to each other As portbridge{add,del} have set up PCRMATRIX properly, remove the PCRMATRIX write from mt7530portsetvlan_aware.