What’s Vulnerable › Vulnerabilities

CVE-2014-2523

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2014-03-24 · updated 2026-06-17
• Weakness: CWE-20

Description

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.

Affected products

• Canonical Ubuntu Linux: 10.04
• Linux kernel: before 3.2.57; from 3.3 before 3.4.86; from 3.5 before 3.10.36; from 3.11 before 3.12.17; from 3.13.0 before 3.13.9 — fixed in 3.10.36, 3.12.17, 3.13.9, 3.2.57, 3.4.86

How to fix

Upgrade to a fixed version: Linux kernel 3.10.36, 3.12.17, 3.13.9, 3.2.57. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b22f5126a24b3b2f15448c3f2a254fc10cbc2b92
• http://secunia.com/advisories/57446
• http://twitter.com/grsecurity/statuses/445496197399461888
• http://www.openwall.com/lists/oss-security/2014/03/17/7
• http://www.securityfocus.com/bid/66279
• http://www.securitytracker.com/id/1029945
• http://www.ubuntu.com/usn/USN-2173-1
• http://www.ubuntu.com/usn/USN-2174-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1077343
• https://exchange.xforce.ibmcloud.com/vulnerabilities/91910
• https://github.com/torvalds/linux/commit/b22f5126a24b3b2f15448c3f2a254fc10cbc2b92
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b22f5126a24b3b2f15448c3f2a254fc10cbc2b92

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