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Vulnerability of Linux kernel: memory leak via __feat_register_sp

Synthesis of the vulnerability

An attacker can create a memory leak via __feat_register_sp() of the Linux kernel, in order to trigger a denial of service.
Severity of this announce: 1/4.
Creation date: 31/12/2019.
Références of this computer vulnerability: CERTFR-2020-AVI-029, CVE-2019-20096, SUSE-SU-2020:0093-1, VIGILANCE-VUL-31249.

Description of the vulnerability

An attacker can create a memory leak via __feat_register_sp() of the Linux kernel, in order to trigger a denial of service.
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This threat note impacts software or systems such as Linux, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat

Linux kernel: version 3.16.72.
The version 3.16.72 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

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

SUSE LE 12 SP5: new kernel-azure packages.
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.7.1
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