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Vulnerability of Linux kernel: information disclosure via Speculatively Out-of-bounds Loads

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Speculatively Out-of-bounds Loads of the Linux kernel, in order to obtain sensitive information.
Vulnerable software: Debian, Fedora, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 2/4.
Creation date: 19/03/2021.
Références of this computer vulnerability: CERTFR-2021-AVI-217, CERTFR-2021-AVI-220, CERTFR-2021-AVI-264, CVE-2020-27170, DLA-2610-1, FEDORA-2021-e49da8a226, openSUSE-SU-2021:0532-1, SUSE-SU-2021:1175-1, SUSE-SU-2021:1176-1, SUSE-SU-2021:1177-1, SUSE-SU-2021:1210-1, SUSE-SU-2021:1211-1, SUSE-SU-2021:1238-1, USN-4887-1, USN-4890-1, VIGILANCE-VUL-34891.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Speculatively Out-of-boun...
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This security vulnerability impacts software or systems such as Debian, Fedora, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer weakness bulletin 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 security note.

Solutions for this threat 

This vulnerability patch will be public soon.
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