CVE-2026-80842

CVE-2026-80842 is a use-after-free in the Linux kernel bridge multicast subsystem, affecting master VLANs . When a master VLAN is deleted, br_multicast_toggle_one_vlan() returns early on the br_vlan_is_brentry() check without clearing BR_VLFLAG_MCAST_ENABLED under br->multicast_lock. The VLAN ...