CVE-2011-1576 Memory corruption in n/a

Medium 5.7 Published Updated

Remote attackers can cause denial of service via crafted VLAN packets exploiting a memory corruption flaw in the Linux kernel GRO implementation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2011-1576?

CVE-2011-1576 is a medium-severity memory corruption vulnerability in Linux kernel, published on 31 Aug 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-119

Which versions are affected by CVE-2011-1576?

It affects 3 products.

Linux distribution packages (18)
kernel Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-bootwrapper Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debug Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debug-debuginfo Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debug-devel Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debuginfo Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debuginfo-common-i686 Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debuginfo-common-ppc64 Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debuginfo-common-s390x Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-debuginfo-common-x86_64 Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-devel Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-doc Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-firmware Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-headers Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-kdump Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-kdump-debuginfo Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
kernel-kdump-devel Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6
perf Red Hat:rhel_eus:6.0All versions0:2.6.32-71.34.1.el6

Products include Linux kernel, Redhat Enterprise Linux, Redhat Enterprise Virtualization Hypervisor.

How do I fix CVE-2011-1576?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2011-1576 being exploited?

There is no known exploitation of CVE-2011-1576 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as GHSA-mvmx-96hj-8h74, RHSA-2011:1106.

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