CVE-2013-4163 Denial of service in n/a

What is CVE-2013-4163?

CVE-2013-4163 is a medium-severity denial of service vulnerability in Linux kernel, published on 28 Jul 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The ip6_append_data_mtu function in net/ipv6/ip6_output.c in the IPv6 implementation in the Linux kernel through 3.10.3 does not properly maintain information about whether the IPV6_MTU setsockopt option had been specified, which allows local users to cause a denial of service (BUG and system crash) via a crafted application that uses the UDP_CORK option in a setsockopt system call.

Weakness: CWE-399

Which versions are affected by CVE-2013-4163?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2013-4163?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2013-4163 being exploited?

There is no known exploitation of CVE-2013-4163 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2013-4163, GHSA-frx8-wf3h-rw85.