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Vulnerability of IBM Power9 Processor: information disclosure via L1 Cache

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via L1 Cache of IBM Power9 Processor, in order to obtain sensitive information.
Vulnerable software: Fedora, AIX, IBM i, Power Systems, Linux.
Severity of this announce: 1/4.
Creation date: 20/11/2020.
Références of this computer vulnerability: 6370719, CVE-2020-4788, FEDORA-2020-4700a73bd5, FEDORA-2020-8c15928d23, VIGILANCE-VUL-33943.

Description of the vulnerability 

An attacker can bypass access restrictions to data via L1 Cache of IBM Power9 Pr...
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This vulnerability announce impacts software or systems such as Fedora, AIX, IBM i, Power Systems, Linux.

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

Solutions for this threat 

Workarounds for this vulnerability are not yet public.
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