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Vulnerability of Linux kernel: denial of service via do_split

Synthesis of the vulnerability 

An attacker can trigger a fatal error via do_split() of the Linux kernel, in order to trigger a denial of service.
Vulnerable products: Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this weakness: 1/4.
Creation date: 03/09/2020.
Références of this bulletin: 1173798, CERTFR-2020-AVI-547, CERTFR-2020-AVI-548, CERTFR-2020-AVI-553, CERTFR-2020-AVI-568, CERTFR-2020-AVI-574, CVE-2020-14314, openSUSE-SU-2020:1325-1, openSUSE-SU-2020:1382-1, SUSE-SU-2020:2485-1, SUSE-SU-2020:2486-1, SUSE-SU-2020:2540-1, SUSE-SU-2020:2541-1, SUSE-SU-2020:2574-1, SUSE-SU-2020:2575-1, SUSE-SU-2020:2576-1, SUSE-SU-2020:2582-1, SUSE-SU-2020:2605-1, SUSE-SU-2020:2610-1, SUSE-SU-2020:2623-1, SUSE-SU-2020:2631-1, VIGILANCE-VUL-33234.

Description of the vulnerability 

An attacker can trigger a fatal error via do_split() of the Linux kernel, in order to trigger a denial of service.
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This computer weakness impacts software or systems such as Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this vulnerability note 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 threat.

Solutions for this threat 

Linux kernel: version 5.8.4.
The version 5.8.4 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.7.18.
The version 5.7.18 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.61.
The version 5.4.61 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.142.
The version 4.19.142 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.195.
The version 4.14.195 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.234.
The version 4.9.234 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.234.
The version 4.4.234 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

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

openSUSE Leap 15.1: new kernel packages (03/09/2020).
New packages are available:
  openSUSE Leap 15.1: kernel debug-4.12.14-lp151.28.63.1

openSUSE Leap 15.2: new kernel packages.
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.41.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.141.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.130.1

SUSE LE 12 SP4: new kernel packages.
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.60.1

SUSE LE 12 SP5: new kernel-azure packages (07/09/2020).
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.25.1

SUSE LE 12 SP5: new kernel packages (08/09/2020).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.37.1

SUSE LE 12 SP5: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.16.1

SUSE LE 15 RTM: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.58.1

SUSE LE 15 SP1: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.41.1

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.56.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.31.1

SUSE LE 15 SP2: new kernel packages.
New packages are available:
  SUSE LE 15 SP2: kernel 5.3.18-24.12.1
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