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CVE-2013-6431

The fib6_add function in net/ipv6/ip6_fib.c in the Linux kernel before 3.11.5 does not properly...

4.7 MediumFix available

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.

Exploit likelihood

0.43%Down 0.6 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.7

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.

Record
CVE-2013-6431
CVSS 2.0
4.7 MediumAV:L/AC:M/Au:N/C:N/I:N/A:C
Weakness
CWE-264
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2013-6431
Updated
2026-11-02
EUVDEUVD-2013-6241 No score

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.

Record
EUVD-2013-6241
Updated
2026-11-03
GitHub AdvisoriesGHSA-5qh6-gw5f-mgc9 No score

The fib6_add function in net/ipv6/ip6_fib.c in the Linux kernel before 3.11.5 does not properly...

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.

Record
GHSA-5qh6-gw5f-mgc9
Updated
2026-11-02
OSV No score

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.

Record
CVE-2013-6431
Updated
2026-11-02
OSVDEBIAN-CVE-2013-6431 No score

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.

Record
DEBIAN-CVE-2013-6431
Updated
2026-11-02
OSVUBUNTU-CVE-2013-6431 No score

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.

Record
UBUNTU-CVE-2013-6431
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
linux
Debian:12
 before 3.11.5-1
3.11.5-1
linux
Debian:13
 before 3.11.5-1
3.11.5-1
linux
Debian:14
 before 3.11.5-1
3.11.5-1
kernel-rt
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-debug
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-debug-debuginfo
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-debug-devel
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-debuginfo
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-debuginfo-common-x86_64
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-devel
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
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Affected packages
PackageAffectedFixed
kernel-rt-doc
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-firmware
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-trace
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-trace-debuginfo
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-trace-devel
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-vanilla
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-vanilla-debuginfo
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt
kernel-rt-vanilla-devel
Red Hat:enterprise_mrg:2:server:el6
From an advisory covering 7 CVEs
 before 0:3.8.13-rt27.33.el6rt
0:3.8.13-rt27.33.el6rt

History

History
RecordedChangedSources
affected, facts
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2013-6431 is a medium vulnerability (CVSS 4.7) in Linux Kernel, published December 9, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 38th percentile. Fixed in linux 3.11.5-1.

References

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