What is CVE-2015-4004?

CVE-2015-4004 is a vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-06-07.

Is CVE-2015-4004 known to be exploited?

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

Buffer overflow in Linux Kernel

CVE-2015-4004

The OZWPAN driver in the Linux kernel through 4.0.5 relies on an untrusted length field during packet parsing, which allows remote attackers to obtain sensitive information from kernel memory or cause a denial of service (out-of-bounds read and system crash) via a crafted packet.

Vulnerability class: Buffer Overflow

Published 2015-06-07 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 8.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.081 (94.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.081 · newest: 0.081 · change: -0.001

Affected products

Linux Kernel
Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10

Weakness classification (CWE)

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

Public proof-of-concept exploits

Live-Hack-CVE/CVE-2015-4004

References

www.ubuntu.com/usn/USN-3004-1 (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/74669 (VDB Entry, Third Party Advisory, vdb-entry)
lkml.org/lkml/2015/5/13/739 (Vendor Advisory, mailing-list, Exploit)
www.ubuntu.com/usn/USN-3001-1 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-3000-1 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-3002-1 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-2989-1 (vendor-advisory, Third Party Advisory)
openwall.com/lists/oss-security/2015/06/05/7 (mailing-list, Mailing List, Third Party Advisory)
www.ubuntu.com/usn/USN-3003-1 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-2998-1 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2015-4004?: CVE-2015-4004 is a vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-06-07.
Is CVE-2015-4004 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.