CVE-2011-1576: Linux Kernel

Medium severity, CVSS 5.7. EPSS: 1% chance of exploitation in the next 30 days.

The Generic Receive Offload (GRO) implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux 5 and 2.6.32 on Red Hat Enterprise Linux 6, as used in Red Hat Enterprise Virtualization (RHEV) Hypervisor and other products, allows remote attackers to cause a denial of service via crafted VLAN packets that are processed by the napi_reuse_skb function, leading to (1) a memory leak or (2) memory corruption, a different vulnerability than CVE-2011-1478.

Affected products

• Linux Linux Kernel: version 2.6.18 only
• Red Hat Enterprise Linux: version 5 only; version 6.0 only
• Red Hat Enterprise Virtualization Hypervisor: any version

Published 2011-08-31. Last modified 2026-06-16.