CVE-2009-2908

EXPLOITED

Linux Kernel 2.6.31 - Denial of Service via eCryptfs Negative Dentry Handling

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2009-2908 has been observed exploited in the wild (reported by VulnCheck KEV).

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.

References (17)

Core 17
Core References
Issue Tracking x_refsource_misc
https://bugs.launchpad.net/ecryptfs/+bug/387073
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-852-1
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/38794
Various Sources mailing-list x_refsource_mlist
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/53693
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10216
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37075
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=527534
Vendor Advisory vendor-advisory x_refsource_redhat
https://rhn.redhat.com/errata/RHSA-2009-1548.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/38834
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6992
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2009/10/06/1
Patch vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/36639
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37105
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2010/0528

Scores

EPSS 0.0124
EPSS Percentile 66.5%

Details

VulnCheck KEV 2026-02-09
Status published
Products (1)
linux/linux_kernel 2.6.31
Published Oct 13, 2009
Tracked Since Feb 18, 2026