Threats tagged 'ghsa-r5qw-5m8q-6774'

CVE-2026-43100 is a medium severity vulnerability in the Linux kernel bridge component. It involves a null pointer dereference in local VLAN-0 forwarding database (FDB) helper functions when VLAN filtering is disabled. This can cause a kernel crash (general protection fault) during bridge creation with specific boolean options. The issue arises because the code does not check for a NULL VLAN group pointer before dereferencing it. The vulnerability has been fixed by adding appropriate NULL checks to prevent dereferencing when no VLANs are present.