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cybersecurity announce CVE-2017-18509

Linux kernel: memory corruption via net/ipv6/ip6mr.c

Synthesis of the vulnerability

An attacker can trigger a memory corruption via net/ipv6/ip6mr.c of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Severity of this threat: 1/4.
Creation date: 14/08/2019.
Références of this weakness: CERTFR-2019-AVI-392, CERTFR-2019-AVI-478, CERTFR-2019-AVI-561, CERTFR-2019-AVI-575, CVE-2017-18509, DLA-1884-1, DLA-1885-1, DSA-4497-1, SSA:2019-226-01, SUSE-SU-2019:14218-1, SUSE-SU-2019:2949-1, SUSE-SU-2019:2950-1, SUSE-SU-2019:2984-1, USN-4145-1, VIGILANCE-VUL-30050.
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Description of the vulnerability

An attacker can trigger a memory corruption via net/ipv6/ip6mr.c of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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This threat alert impacts software or systems such as Debian, Linux, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability bulletin is low.

The trust level is of type confirmed by the editor, with an origin of privileged shell.

An attacker with a expert ability can exploit this weakness note.

Solutions for this threat

Linux kernel: version 4.9.187.
The version 4.9.187 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.187.
The version 4.4.187 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: patch for net/ipv6/ip6mr.c.
A patch is indicated in information sources.

Debian 8: new linux-4.9 packages.
New packages are available:
  Debian 8: linux-4.9 4.9.168-1+deb9u5~deb8u1

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.72-1

Debian 9/10: new linux packages.
New packages are available:
  Debian 9: linux 4.9.168-1+deb9u5
  Debian 10: linux 4.19.37-5+deb10u2

Slackware 14.2: new kernel packages.
New packages are available:
  Slackware 14.2: kernel 4.4.189-*-1

SUSE LE 11 SP4: new kernel packages.
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-108.108.1

SUSE LE 12 SP1: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.124.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.125.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.107.1

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.165.173
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