The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-str…

published 2014-07-19 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-4860

cvss: 6.9; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.1%; EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits: 1; Exploit-DB

The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.

Patch / fix

fixed in 1 distros 3 links 1

linux linux_kernel 3.2.62, 3.4.102, 3.10.52, 3.12.27, 3.14.16, 3.15.9

debian ubuntu red hat

linux Debian 14, Debian 13, Debian 12 3.14.13-1

debian advisories DEBIAN-CVE-2014-4943

linux Ubuntu 14.04 LTS 3.13.0-32.57

ubuntu advisories UBUNTU-CVE-2014-4943

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 7 3.10.0-123.4.4.el7
perf RHEL 7 3.10.0-123.4.4.el7
python-perf RHEL 7 3.10.0-123.4.4.el7
kernel-kdump RHEL 7 3.10.0-123.4.4.el7
kernel-tools RHEL 7 3.10.0-123.4.4.el7
kernel-tools-libs RHEL 7 3.10.0-123.4.4.el7
kernel-bootwrapper RHEL 7 3.10.0-123.4.4.el7
kernel-abi-whitelists RHEL 7 3.10.0-123.4.4.el7

red hat advisories RHSA-2014:1025 RHSA-2014:0925 RHSA-2014:0923 RHSA-2014:0924

github.com/torvalds/linux@3cf521f commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-4943 updated 2026-11-04 cvss 7.2

kernel: net: pppol2tp: level handling in pppol2tp_[s,g]etsockopt()

Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-123.4.4.el7, kernel 3.10.0-123.4.4.el7, kernel-tools 3.10.0-123.4.4.el7, kernel-tools-libs 3.10.0-123.4.4.el7, kernel-abi-whitelists 3.10.0-123.4.4.el7, kernel-debuginfo-common-x86_64 3.10.0-123.4.4.el7 Red Hat Enterprise Linux Client Optional (v. 7) python-perf 3.10.0-123.4.4.el7, kernel-debuginfo-common-x86_64 3.10.0-123.4.4.el7
fixed: vendor fix RHSA-2014:0923
Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.4) kernel 2.6.32-358.46.2.el6, python-perf 2.6.32-358.46.2.el6, kernel-debuginfo-common-x86_64 2.6.32-358.46.2.el6
fixed: vendor fix RHSA-2014:0925
Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-123.4.4.el7, kernel 3.10.0-123.4.4.el7, kernel-tools 3.10.0-123.4.4.el7, kernel-tools-libs 3.10.0-123.4.4.el7, kernel-abi-whitelists 3.10.0-123.4.4.el7, kernel-debuginfo-common-x86_64 3.10.0-123.4.4.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-perf 3.10.0-123.4.4.el7, kernel-debuginfo-common-x86_64 3.10.0-123.4.4.el7
fixed: vendor fix RHSA-2014:0923
Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-431.20.5.el6, kernel 2.6.32-431.20.5.el6, kernel-firmware 2.6.32-431.20.5.el6, kernel-abi-whitelists 2.6.32-431.20.5.el6, kernel-debuginfo-common-i686 2.6.32-431.20.5.el6, kernel-debuginfo-common-x86_64 2.6.32-431.20.5.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-431.20.5.el6, python-perf 2.6.32-431.20.5.el6, kernel-debuginfo-common-i686 2.6.32-431.20.5.el6, kernel-debuginfo-common-x86_64 2.6.32-431.20.5.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-431.20.5.el6, kernel 2.6.32-431.20.5.el6, kernel-firmware 2.6.32-431.20.5.el6, kernel-abi-whitelists 2.6.32-431.20.5.el6, kernel-debuginfo-common-x86_64 2.6.32-431.20.5.el6
fixed: vendor fix RHSA-2014:0924
Red Hat Enterprise Linux HPC Node EUS (v. 6.4) perf 2.6.32-358.46.2.el6, kernel 2.6.32-358.46.2.el6, kernel-firmware 2.6.32-358.46.2.el6, kernel-debuginfo-common-x86_64 2.6.32-358.46.2.el6
fixed: vendor fix RHSA-2014:0925
Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-431.20.5.el6, python-perf 2.6.32-431.20.5.el6, kernel-debuginfo-common-x86_64 2.6.32-431.20.5.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-431.20.5.el6, kernel 2.6.32-431.20.5.el6, kernel-kdump 2.6.32-431.20.5.el6, kernel-firmware 2.6.32-431.20.5.el6, kernel-bootwrapper 2.6.32-431.20.5.el6, kernel-abi-whitelists 2.6.32-431.20.5.el6, +4 more
fixed: vendor fix RHSA-2014:0924
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-123.4.4.el7, kernel 3.10.0-123.4.4.el7, kernel-kdump 3.10.0-123.4.4.el7, kernel-tools 3.10.0-123.4.4.el7, kernel-tools-libs 3.10.0-123.4.4.el7, kernel-bootwrapper 3.10.0-123.4.4.el7, +4 more
fixed: vendor fix RHSA-2014:0923
Red Hat Enterprise Linux Server AUS (v. 6.2) perf 2.6.32-220.54.1.el6, kernel 2.6.32-220.54.1.el6, kernel-firmware 2.6.32-220.54.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.54.1.el6
fixed: vendor fix RHSA-2014:1025

show 10 more

Red Hat Enterprise Linux Server EUS (v. 6.4) perf 2.6.32-358.46.2.el6, kernel 2.6.32-358.46.2.el6, kernel-kdump 2.6.32-358.46.2.el6, kernel-firmware 2.6.32-358.46.2.el6, kernel-bootwrapper 2.6.32-358.46.2.el6, kernel-debuginfo-common-i686 2.6.32-358.46.2.el6, +3 more
fixed: vendor fix RHSA-2014:0925
Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-431.20.5.el6, python-perf 2.6.32-431.20.5.el6, kernel-debuginfo-common-i686 2.6.32-431.20.5.el6, kernel-debuginfo-common-ppc64 2.6.32-431.20.5.el6, kernel-debuginfo-common-s390x 2.6.32-431.20.5.el6, kernel-debuginfo-common-x86_64 2.6.32-431.20.5.el6
fixed: vendor fix RHSA-2014:0924
Red Hat Enterprise Linux Server Optional (v. 7) python-perf 3.10.0-123.4.4.el7, kernel-debuginfo-common-ppc64 3.10.0-123.4.4.el7, kernel-debuginfo-common-s390x 3.10.0-123.4.4.el7, kernel-debuginfo-common-x86_64 3.10.0-123.4.4.el7
fixed: vendor fix RHSA-2014:0923
Red Hat Enterprise Linux Server Optional AUS (v. 6.2) kernel 2.6.32-220.54.1.el6, python-perf 2.6.32-220.54.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.54.1.el6
fixed: vendor fix RHSA-2014:1025
Red Hat Enterprise Linux Server Optional EUS (v. 6.4) kernel 2.6.32-358.46.2.el6, python-perf 2.6.32-358.46.2.el6, kernel-debuginfo-common-i686 2.6.32-358.46.2.el6, kernel-debuginfo-common-ppc64 2.6.32-358.46.2.el6, kernel-debuginfo-common-s390x 2.6.32-358.46.2.el6, kernel-debuginfo-common-x86_64 2.6.32-358.46.2.el6
fixed: vendor fix RHSA-2014:0925
Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-431.20.5.el6, kernel 2.6.32-431.20.5.el6, kernel-firmware 2.6.32-431.20.5.el6, kernel-abi-whitelists 2.6.32-431.20.5.el6, kernel-debuginfo-common-i686 2.6.32-431.20.5.el6, kernel-debuginfo-common-x86_64 2.6.32-431.20.5.el6
fixed: vendor fix RHSA-2014:0924
Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-123.4.4.el7, kernel 3.10.0-123.4.4.el7, kernel-tools 3.10.0-123.4.4.el7, kernel-tools-libs 3.10.0-123.4.4.el7, kernel-abi-whitelists 3.10.0-123.4.4.el7, kernel-debuginfo-common-x86_64 3.10.0-123.4.4.el7
fixed: vendor fix RHSA-2014:0923
Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-431.20.5.el6, python-perf 2.6.32-431.20.5.el6, kernel-debuginfo-common-i686 2.6.32-431.20.5.el6, kernel-debuginfo-common-x86_64 2.6.32-431.20.5.el6
fixed: vendor fix RHSA-2014:0924
Red Hat Enterprise Linux Workstation Optional (v. 7) python-perf 3.10.0-123.4.4.el7, kernel-debuginfo-common-x86_64 3.10.0-123.4.4.el7
fixed: vendor fix RHSA-2014:0923
Red Hat Enterprise Linux 5 kernel Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

2014-07-19 Published
2015-03-04 First public exploit (EDB-36267)

Exploit prediction

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

EDB-36267 Linux Kernel 3.15.6 - PPP-over-L2TP Socket Level Handling Crash (PoC) dos, 2015-03-04

CVSS scores

assigned by	version	score	vector
NVD	2.0	6.9	AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-269 Improper Privilege Management

Technology feeds

Linux kernel rss critical rss

References

github.com /torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
patch, third-party-advisory
exploit-db.com /exploits/36267
exploit, third-party-advisory, vdb-entry
lists.opensuse.org /opensuse-security-announce/2014-10/msg00006.html
vendor-advisory, mailing-list, third-party-advisory
rhn.redhat.com /errata/RHSA-2014-1025.html
vendor-advisory, third-party-advisory
lists.opensuse.org /opensuse-security-announce/2014-10/msg00007.html
vendor-advisory, mailing-list, third-party-advisory
lists.opensuse.org /opensuse-security-announce/2015-03/msg00010.html
vendor-advisory, mailing-list, third-party-advisory
lists.opensuse.org /opensuse-security-announce/2015-03/msg00025.html
vendor-advisory, mailing-list, third-party-advisory
debian.org /security/2014/dsa-2992
vendor-advisory, third-party-advisory
linux.oracle.com /errata/ELSA-2014-3047.html
third-party-advisory
securitytracker.com /id/1030610
vdb-entry, third-party-advisory
secunia.com /advisories/60220
third-party-advisory
secunia.com /advisories/59790
third-party-advisory
git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
broken-link, third-party-advisory
bugzilla.redhat.com /show_bug.cgi?id=1119458
issue-tracking, third-party-advisory
linux.oracle.com /errata/ELSA-2014-0924.html
third-party-advisory
secunia.com /advisories/60393
third-party-advisory
secunia.com /advisories/60380
third-party-advisory
linux.oracle.com /errata/ELSA-2014-3048.html
third-party-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/94665
vdb-entry, third-party-advisory
openwall.com /lists/oss-security/2014/07/17/1
mailing-list, third-party-advisory
secunia.com /advisories/60011
third-party-advisory
osvdb.org /show/osvdb/109277
vdb-entry, broken-link
secunia.com /advisories/60071
third-party-advisory

Sources

CVE List CVE-2014-4943
NVD CVE-2014-4943

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary