The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.


Synthesis of the vulnerability 


An attacker can bypass access restrictions via get_user_pages() of the Linux kernel, in order to alter data.
Vulnerable software: Linux.
Severity of this announce: 2/4.
Creation date: 30/11/2020.
Références of this computer vulnerability: CVE-2020-29374, PROJ-ZERO-2045, VIGILANCE-VUL-33997.

Description of the vulnerability 


An attacker can bypass access restrictions via get_user_pages() of the Linux kernel, in order to alter data.
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This threat impacts software or systems such as Linux.

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

Solutions for this threat 


Linux kernel: version 5.7.3.
The version 5.7.3 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.6.19.
The version 5.6.19 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.47.
The version 5.4.47 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: patch for get_user_pages.
A patch is indicated in information sources.
Full bulletin, software filtering, emails, fixes, … (Request your free trial)

Computer vulnerabilities tracking service 


Vigil@nce provides a system vulnerability alert. Each administrator can customize the list of products for which he wants to receive vulnerability alerts.





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