CVE-2013-7446 Use after free in n/a

What is CVE-2013-7446?

CVE-2013-7446 is a medium-severity use after free vulnerability in Linux kernel, published on 28 Dec 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Use-after-free vulnerability in net/unix/af_unix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AF_UNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls.

Which versions are affected by CVE-2013-7446?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2013-7446?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2013-7446 being exploited?

There is no known exploitation of CVE-2013-7446 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-2013-7446, GHSA-w9h3-r69r-j5c4, SUSE-SU-2016:0749-1, SUSE-SU-2016:0754-1, UBUNTU-CVE-2013-7446.