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threat note CVE-2018-7191

Linux kernel: NULL pointer dereference via TUNSETIFF

Synthesis of the vulnerability

An attacker can force a NULL pointer to be dereferenced via TUNSETIFF of the Linux kernel, in order to trigger a denial of service.
Severity of this threat: 1/4.
Creation date: 20/05/2019.
Références of this weakness: CERTFR-2019-AVI-346, CERTFR-2019-AVI-458, CVE-2018-7191, openSUSE-SU-2019:1479-1, openSUSE-SU-2019:1570-1, openSUSE-SU-2019:1579-1, SUSE-SU-2019:1527-1, SUSE-SU-2019:1529-1, SUSE-SU-2019:1530-1, SUSE-SU-2019:1532-1, SUSE-SU-2019:1534-1, SUSE-SU-2019:1535-1, SUSE-SU-2019:1536-1, SUSE-SU-2019:1550-1, SUSE-SU-2019:1870-1, SUSE-SU-2019:2430-1, VIGILANCE-VUL-29360.
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Description of the vulnerability

An attacker can force a NULL pointer to be dereferenced via TUNSETIFF of the Linux kernel, in order to trigger a denial of service.
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This cybersecurity note impacts software or systems such as Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this computer weakness announce is low.

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

An attacker with a expert ability can exploit this cybersecurity vulnerability.

Solutions for this threat

Linux kernel: version 4.13.14.
The version 4.13.14 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.13.14.tar.xz

openSUSE Leap 15.0: new kernel packages.
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.64.1

openSUSE Leap 15.1: new kernel packages.
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.4.1

openSUSE Leap 42.3: new kernel packages.
New packages are available:
  openSUSE Leap 42.3: kernel 4.4.180-102.1

SUSE LE 12 SP1: new kernel packages.
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.118.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.114.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.97.1

SUSE LE 12 SP4: new kernel packages (18/06/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.19.1

SUSE LE 15: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.22.1

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.4.1

SUSE LE 15 SP1: new kernel-source-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-source-rt 4.12.14-14.8.1
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