Arch Linux Security Advisory ASA-201612-11

Severity: High
Date : 2016-12-10
CVE-ID : CVE-2016-9919
Package : linux-grsec
Type : denial of service
Remote : Yes
Link : https://wiki.archlinux.org/index.php/CVE

Summary

The package linux-grsec before version 1:4.8.12.r201612062306-2 is
vulnerable to denial of service.

Resolution

Upgrade to 1:4.8.12.r201612062306-2.

pacman -Syu “linux-grsec>=1:4.8.12.r201612062306-2”

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/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=79dc7e3f1cd323be4c81aa1a94faa1b3ed987fb2
https://access.redhat.com/security/cve/CVE-2016-9919