net/netfilter/nf_conntrack_proto_dccp.c in the Linux kernel through 3.13.6 uses a DCCP header pointer incorrectly, which allows remote atta…

published 2014-03-24 12y ago modified 2026-06-17 4mo ago also EUVD-2014-2559

cvss: 10.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 10.4%; EPSS 10.4% chance of exploitation in 30 days, percentile 95%
public exploits: 0; none known

net/netfilter/nf_conntrack_proto_dccp.c in the Linux kernel through 3.13.6 uses a DCCP header pointer incorrectly, which allows remote attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a DCCP packet that triggers a call to the (1) dccp_new, (2) dccp_packet, or (3) dccp_error function.

Patch / fix

fixed in 1 distros 2 links 2

linux linux_kernel 3.2.57, 3.4.86, 3.10.36, 3.12.17, 3.13.9

debian red hat

linux Debian 14, Debian 13, Debian 12 3.13.10-1

debian advisories DEBIAN-CVE-2014-2523

kernel RHEL 6 2.6.32-431.17.1.el6
perf RHEL 6 2.6.32-431.17.1.el6
python-perf RHEL 6 2.6.32-431.17.1.el6
kernel-kdump RHEL 6 2.6.32-431.17.1.el6
kernel-firmware RHEL 6 2.6.32-431.17.1.el6
kernel-bootwrapper RHEL 6 2.6.32-431.17.1.el6
kernel-abi-whitelists RHEL 6 2.6.32-431.17.1.el6
kernel-debuginfo-common-i686 RHEL 6 2.6.32-431.17.1.el6

red hat advisories RHSA-2014:0520 RHSA-2014:0593 RHSA-2014:0475 RHSA-2014:0634 RHSA-2014:0439

github.com/torvalds/linux@b22f512 commit
openwall.com/lists/oss-security/2014/03/17/7 advisory

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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-2014-2523 updated 2026-11-04 cvss 7.6

kernel: netfilter: nf_conntrack_dccp: incorrect skb_header_pointer API usages

Red Hat Enterprise Linux Compute Node EUS (v. 6.3) perf 2.6.32-279.46.1.el6, kernel 2.6.32-279.46.1.el6, kernel-firmware 2.6.32-279.46.1.el6, kernel-debuginfo-common-x86_64 2.6.32-279.46.1.el6 Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3) kernel 2.6.32-279.46.1.el6, python-perf 2.6.32-279.46.1.el6, kernel-debuginfo-common-x86_64 2.6.32-279.46.1.el6
fixed: vendor fix RHSA-2014:0593
Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.4) kernel 2.6.32-358.44.1.el6, python-perf 2.6.32-358.44.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.44.1.el6
fixed: vendor fix RHSA-2014:0634
Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-431.17.1.el6, kernel 2.6.32-431.17.1.el6, kernel-firmware 2.6.32-431.17.1.el6, kernel-abi-whitelists 2.6.32-431.17.1.el6, kernel-debuginfo-common-i686 2.6.32-431.17.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.17.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-431.17.1.el6, python-perf 2.6.32-431.17.1.el6, kernel-debuginfo-common-i686 2.6.32-431.17.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.17.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-431.17.1.el6, kernel 2.6.32-431.17.1.el6, kernel-firmware 2.6.32-431.17.1.el6, kernel-abi-whitelists 2.6.32-431.17.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.17.1.el6
fixed: vendor fix RHSA-2014:0475
Red Hat Enterprise Linux HPC Node EUS (v. 6.4) perf 2.6.32-358.44.1.el6, kernel 2.6.32-358.44.1.el6, kernel-firmware 2.6.32-358.44.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.44.1.el6
fixed: vendor fix RHSA-2014:0634
Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-431.17.1.el6, python-perf 2.6.32-431.17.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.17.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-431.17.1.el6, kernel 2.6.32-431.17.1.el6, kernel-kdump 2.6.32-431.17.1.el6, kernel-firmware 2.6.32-431.17.1.el6, kernel-bootwrapper 2.6.32-431.17.1.el6, kernel-abi-whitelists 2.6.32-431.17.1.el6, +4 more
fixed: vendor fix RHSA-2014:0475
Red Hat Enterprise Linux Server AUS (v. 6.2) perf 2.6.32-220.51.1.el6, kernel 2.6.32-220.51.1.el6, kernel-firmware 2.6.32-220.51.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.51.1.el6
fixed: vendor fix RHSA-2014:0520
Red Hat Enterprise Linux Server EUS (v. 6.3) perf 2.6.32-279.46.1.el6, kernel 2.6.32-279.46.1.el6, kernel-kdump 2.6.32-279.46.1.el6, kernel-firmware 2.6.32-279.46.1.el6, kernel-bootwrapper 2.6.32-279.46.1.el6, kernel-debuginfo-common-i686 2.6.32-279.46.1.el6, +3 more
fixed: vendor fix RHSA-2014:0593
Red Hat Enterprise Linux Server EUS (v. 6.4) perf 2.6.32-358.44.1.el6, kernel 2.6.32-358.44.1.el6, kernel-kdump 2.6.32-358.44.1.el6, kernel-firmware 2.6.32-358.44.1.el6, kernel-bootwrapper 2.6.32-358.44.1.el6, kernel-debuginfo-common-i686 2.6.32-358.44.1.el6, +3 more
fixed: vendor fix RHSA-2014:0634

show 7 more

Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-431.17.1.el6, python-perf 2.6.32-431.17.1.el6, kernel-debuginfo-common-i686 2.6.32-431.17.1.el6, kernel-debuginfo-common-ppc64 2.6.32-431.17.1.el6, kernel-debuginfo-common-s390x 2.6.32-431.17.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.17.1.el6
fixed: vendor fix RHSA-2014:0475
Red Hat Enterprise Linux Server Optional AUS (v. 6.2) kernel 2.6.32-220.51.1.el6, python-perf 2.6.32-220.51.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.51.1.el6
fixed: vendor fix RHSA-2014:0520
Red Hat Enterprise Linux Server Optional EUS (v. 6.3) kernel 2.6.32-279.46.1.el6, python-perf 2.6.32-279.46.1.el6, kernel-debuginfo-common-i686 2.6.32-279.46.1.el6, kernel-debuginfo-common-ppc64 2.6.32-279.46.1.el6, kernel-debuginfo-common-s390x 2.6.32-279.46.1.el6, kernel-debuginfo-common-x86_64 2.6.32-279.46.1.el6
fixed: vendor fix RHSA-2014:0593
Red Hat Enterprise Linux Server Optional EUS (v. 6.4) kernel 2.6.32-358.44.1.el6, python-perf 2.6.32-358.44.1.el6, kernel-debuginfo-common-i686 2.6.32-358.44.1.el6, kernel-debuginfo-common-ppc64 2.6.32-358.44.1.el6, kernel-debuginfo-common-s390x 2.6.32-358.44.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.44.1.el6
fixed: vendor fix RHSA-2014:0634
Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-431.17.1.el6, kernel 2.6.32-431.17.1.el6, kernel-firmware 2.6.32-431.17.1.el6, kernel-abi-whitelists 2.6.32-431.17.1.el6, kernel-debuginfo-common-i686 2.6.32-431.17.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.17.1.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-431.17.1.el6, python-perf 2.6.32-431.17.1.el6, kernel-debuginfo-common-i686 2.6.32-431.17.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.17.1.el6
fixed: vendor fix RHSA-2014:0475
Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.33-rt32.33.el6rt, kernel-rt-trace 3.10.33-rt32.33.el6rt, kernel-rt-vanilla 3.10.33-rt32.33.el6rt, kernel-rt-firmware 3.10.33-rt32.33.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.33-rt32.33.el6rt
fixed: vendor fix RHSA-2014:0439
Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 7 perf, kernel, bpftool, python-perf, kernel-kdump, kernel-tools, +3 more Red Hat Enterprise Linux Desktop (v. 6) kernel-headers 2.6.32-431.17.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) kernel-headers 2.6.32-431.17.1.el6 Red Hat Enterprise Linux HPC Node EUS (v. 6.4) kernel-headers 2.6.32-358.44.1.el6 Red Hat Enterprise Linux Server (v. 6) kernel-headers 2.6.32-431.17.1.el6

+2 more productsfewer

Red Hat Enterprise Linux Server EUS (v. 6.4) kernel-headers 2.6.32-358.44.1.el6 Red Hat Enterprise Linux Workstation (v. 6) kernel-headers 2.6.32-431.17.1.el6

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

Exploit prediction

10.39% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-20 Improper Input Validation

Technology feeds

Linux kernel rss critical rss

References

github.com /torvalds/linux/commit/b22f5126a24b3b2f15448c3f2a254fc10cbc2b92
patch, third-party-advisory
openwall.com /lists/oss-security/2014/03/17/7
mailing-list, patch, third-party-advisory
ubuntu.com /usn/USN-2173-1
vendor-advisory, third-party-advisory
ubuntu.com /usn/USN-2174-1
vendor-advisory, third-party-advisory
twitter.com /grsecurity/statuses/445496197399461888
broken-link
securityfocus.com /bid/66279
vdb-entry, third-party-advisory
secunia.com /advisories/57446
third-party-advisory
bugzilla.redhat.com /show_bug.cgi?id=1077343
issue-tracking, third-party-advisory
securitytracker.com /id/1029945
vdb-entry, third-party-advisory
git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b22f5126a24b3b2f15448c3f2a254fc10cbc2b92
exchange.xforce.ibmcloud.com /vulnerabilities/91910
vdb-entry, third-party-advisory

Sources

CVE List CVE-2014-2523
NVD CVE-2014-2523

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.