What is CVE-2009-2407?

CVE-2009-2407 is a vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-07-31.

Is CVE-2009-2407 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Linux Kernel

CVE-2009-2407

Heap-based buffer overflow in the parse_tag_3_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to a large encrypted key size in a Tag 3 packet.

Vulnerability class: Buffer Overflow

Published 2009-07-31 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.006 (46.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Linux Kernel — versions 2.6.0, 2.6.1, 2.6.2

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

secunia.com/advisories/35985 (Patch, Vendor Advisory, third-party-advisory)
secunia.com/advisories/36131 (Vendor Advisory, third-party-advisory)
secunia.com/advisories/37471 (third-party-advisory)
www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.html (vendor-advisory)
www.debian.org/security/2009/dsa-1844 (vendor-advisory, Patch)
www.ubuntu.com/usn/usn-807-1 (vendor-advisory)
www.vmware.com/security/advisories/VMSA-2009-0016.html
www.redhat.com/support/errata/RHSA-2009-1193.html (vendor-advisory)
www.securityfocus.com/archive/1/505337/100/0/threaded (mailing-list)
www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.4 (Vendor Advisory)

Frequently asked questions

What is CVE-2009-2407?: CVE-2009-2407 is a vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-07-31.
Is CVE-2009-2407 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.