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Arch Linux: 201612-10 High: CVE-2016-9919 Denial Of Service

Calendar Dec 10, 2016 • User Avatar LinuxSecurity Advisories
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Topics Covered

security advisory denial of service high severity linux kernel arch linux
The package linux before version 4.8.12-3 is vulnerable to denial of service. 
Arch Linux Security Advisory ASA-201612-10
=========================================
Severity: High
Date    : 2016-12-10
CVE-ID  : CVE-2016-9919
Package : linux
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package linux before version 4.8.12-3 is vulnerable to denial of
service.

Resolution
=========
Upgrade to 4.8.12-3.

# pacman -Syu "linux>=4.8.12-3"

The problem has been fixed upstream but no release is available yet.

Workaround
=========
None.

Description
==========
The icmp6_send function in net/ipv6/icmp.c in the Linux kernel through
4.8.12 omits a certain check of the dst data structure, which allows
remote attackers to cause a denial of service (panic) via a fragmented
IPv6 packet.

Impact
=====
A remote attacker can cause a kernel panic by sending a fragmented IPv6
packet.

References
=========
https://bugzilla.kernel.org/show_bug.cgi?id=189851
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/
https://access.redhat.com/security/cve/CVE-2016-9919