CVE-2011-2942: A certain Red Hat patch to the __br_deliver function in net/bridge/br_forward.c in the Linux kernel 2.6.18...

Security readout for executives and security teams

This issue affects Red Hat Enterprise Linux 5 systems running a patched Linux 2.6.18 kernel with Ethernet bridge devices. A remote attacker with network connectivity to a bridged interface may crash the system. The public bundle does not confirm active exploitation or a specific patch level. Most exposure is likely in legacy RHEL 5 environments using Linux bridge networking, virtualization hosts, appliances, or network-forwarding systems. Non-RHEL kernels and systems without Ethernet bridge devices are not evidenced as affected in the bundle. Treat this as a targeted legacy-infrastructure availability risk. Prioritize only if RHEL 5 bridge-connected systems remain in production or exposed to untrusted networks. No source confirms active exploitation. Mitigation focus: Identify RHEL 5 kernel 2.6.18 systems using Ethernet bridge devices.; Review Red Hat Bugzilla and vendor guidance for fixed kernel information.; Reduce untrusted network reachability to bridged interfaces where feasible..

Prepared

Jun 14, 2026, 22:07 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.