CVE-2009-2908

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-10-13 · updated 2026-06-16

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.

Affected products

Linux kernel: 2.6.31

References

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git%3Ba=commit%3Bh=afc2b6932f48f200736d3e36ad66fee0ec733136
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://secunia.com/advisories/37075
http://secunia.com/advisories/37105
http://secunia.com/advisories/38794
http://secunia.com/advisories/38834
http://www.openwall.com/lists/oss-security/2009/10/06/1
http://www.securityfocus.com/bid/36639
http://www.ubuntu.com/usn/USN-852-1
http://www.vupen.com/english/advisories/2010/0528
https://bugs.launchpad.net/ecryptfs/+bug/387073
https://bugzilla.redhat.com/show_bug.cgi?id=527534

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