Is CVE-2013-6431 in the CISA KEV catalog?

No. CVE-2013-6431 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-6431?

CVE-2013-6431 has a CVSS v2 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2013-6431?

CVE-2013-6431 has an EPSS score of 0.43% (35th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-6431?

Upgrade linux on debian 11 to 3.11.5-1 or later.

CVE & CISA-KEV Catalog

CVE-2013-6431

MEDIUM

4.7

CVSS v2

NVD

Description

The fib6_add function in net/ipv6/ip6_fib.c in the Linux kernel before 3.11.5 does not properly implement error-code encoding, which allows local users to cause a denial of service (NULL pointer dereference and system crash) by leveraging the CAP_NET_ADMIN capability for an IPv6 SIOCADDRT ioctl call.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

linuxDebian

Fixed in:3.11.5-1CVE-2013-6431

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

0.43%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Patch2

Other references5

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.