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Vulnerability of Linux kernel: NULL pointer dereference via EFI

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via EFI of the Linux kernel, in order to trigger a denial of service.
Impacted systems: Fedora, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this alert: 1/4.
Creation date: 28/05/2019.
Références of this alert: CERTFR-2019-AVI-330, CERTFR-2019-AVI-337, CERTFR-2019-AVI-458, CVE-2019-12380, FEDORA-2019-7ec378191e, FEDORA-2019-f40bd7826f, openSUSE-SU-2019:1570-1, openSUSE-SU-2019:1571-1, openSUSE-SU-2019:1579-1, SUSE-SU-2019:1823-1, SUSE-SU-2019:1823-2, SUSE-SU-2019:1852-1, SUSE-SU-2019:1855-1, SUSE-SU-2019:2430-1, SUSE-SU-2019:2450-1, VIGILANCE-VUL-29423.

Description of the vulnerability 

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

Our Vigil@nce team determined that the severity of this computer vulnerability announce 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 cybersecurity announce.

Solutions for this threat 

Linux kernel: patch for EFI.
A patch is indicated in information sources.

Fedora 29: new kernel-headers packages.
New packages are available:
  Fedora 29: kernel-headers 5.1.6-200.fc29

Fedora 29: new kernel packages.
New packages are available:
  Fedora 29: kernel 5.1.6-200.fc29

Fedora 29: new kernel-tools packages.
New packages are available:
  Fedora 29: kernel-tools 5.1.6-200.fc29

Fedora 30: new kernel-headers packages.
New packages are available:
  Fedora 30: kernel-headers 5.1.7-300.fc30

Fedora 30: new kernel packages.
New packages are available:
  Fedora 30: kernel 5.1.7-300.fc30

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-lp151.28.7.1

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

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.117.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.100.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.3.1

SUSE LE 15 RTM: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.27.1

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

Wind River Linux: version 10.18.44.14.
The version 10.18.44.14 is fixed:
  https://support2.windriver.com/
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