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Vulnerability of Linux kernel: out-of-bounds memory reading via skb_headlen

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via skb_headlen() of the Linux kernel, in order to trigger a denial of service, or to obtain sensitive information.
Vulnerable products: Android OS, Linux, SUSE Linux Enterprise Desktop, SLES.
Severity of this weakness: 2/4.
Creation date: 11/11/2020.
Références of this bulletin: 1176723, CERTFR-2020-AVI-741, CERTFR-2020-AVI-750, CERTFR-2020-AVI-764, CERTFR-2020-AVI-769, CERTFR-2020-AVI-776, CERTFR-2020-AVI-784, CVE-2020-0430, SUSE-SU-2020:3272-1, SUSE-SU-2020:3281-1, SUSE-SU-2020:3326-1, SUSE-SU-2020:3484-1, SUSE-SU-2020:3512-1, SUSE-SU-2020:3513-1, SUSE-SU-2020:3532-1, SUSE-SU-2020:3544-1, VIGILANCE-VUL-33882.

Description of the vulnerability 

An attacker can force a read at an invalid address via skb_headlen() of the Linux kernel, in order to trigger a denial of service, or to obtain sensitive information.
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This computer weakness bulletin impacts software or systems such as Android OS, Linux, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this computer threat announce is medium.

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 threat announce.

Solutions for this threat 

Linux kernel: version 4.17.7.
The version 4.17.7 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.164.
The version 4.14.164 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

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

Google Android/Pixel: patch for September 2020.
A patch is indicated in information sources.

SUSE LE 12 SP4: new kernel-default packages.
New packages are available:
  SUSE LE 12 SP4: kernel-default 4.12.14-95.65.1

SUSE LE 12 SP5: new kernel-azure packages.
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.34.1

SUSE LE 12 SP5: new kernel packages (16/11/2020).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.51.2

SUSE LE 12 SP5: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.22.1

SUSE LE 15: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel-default-livepatch 4.12.14-150.63.1, kernel-livepatch 4_12_14-150_63-default-1-1.5.1

SUSE LE 15 SP1: new kernel-azure packages (24/11/2020).
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.52.1

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.67.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.41.2
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