Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:

net: dsa: mt7530: fix VLAN traffic leaks

PCR_MATRIX 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 vlan_filtering 1
        ip link add br1 type bridge vlan_filtering 1
        ip link set swp0 master br0
        ip link set swp1 master br1
        ip link set br0 type bridge vlan_filtering 0
        ip link set br1 type bridge vlan_filtering 0
        # traffic in br0 and br1 will start leaking to each other

As port_bridge_{add,del} have set up PCR_MATRIX properly, remove the
PCR_MATRIX write from mt7530_port_set_vlan_aware.

CREATE(Triage):(User=admin) CVE-2021-47160 (https://nvd.nist.gov/vuln/detail/CVE-2021-47160)

CVEs

• CVE-2021-47160