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Vulnerability of Linux kernel: NULL pointer dereference via sas_discover.c

Synthesis of the vulnerability

An attacker can force a NULL pointer to be dereferenced via sas_discover.c of the Linux kernel, in order to trigger a denial of service.
Severity of this weakness: 1/4.
Creation date: 30/12/2019.
Références of this bulletin: CVE-2019-19965, VIGILANCE-VUL-31242.

Description of the vulnerability

An attacker can force a NULL pointer to be dereferenced via sas_discover.c of the Linux kernel, in order to trigger a denial of service.
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This computer weakness bulletin impacts software or systems such as Linux.

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

Solutions for this threat

Linux kernel: version 5.4.9.
The version 5.4.9 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.94.
The version 4.19.94 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.163.
The version 4.14.163 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.209.
The version 4.9.209 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.209.
The version 4.4.209 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.16.81.
The version 3.16.81 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

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