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4.9

Linux kernel 2.6.31 may crash or allow code execution

CVE-2009-2908 · published 17 years ago
Summary

A coding error in the eCryptfs file system of Linux kernel version 2.6.31 can let anyone with access to the machine cause the system to crash or possibly run their own code. This happens when the system processes certain directory operations that lead to a null reference error. Upgrade to a newer kernel version or apply the available security patch to resolve the issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
linux linux_kernel 2.6.31
cpe:2.3:o:linux:linux_kernel:2.6.31:*:*:*:*:*:*:*
Original advisory text
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...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
4.9 Medium
Exploitation
1% chance of attack within 30 days
Timeline
Published13 Oct 2009
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2009-2908 · NVD
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