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Synthesis of the vulnerability 
An attacker can force the usage of a freed memory area via IB/hfi1 of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
 Vulnerable software: Linux, openSUSE Leap.
Severity of this announce: 2/4.
Creation date: 08/01/2021.
Références of this computer vulnerability: CVE-2020-27835, RHBUG-1901709, VIGILANCE-VUL-34267.
Description of the vulnerability 
An attacker can force the usage of a freed memory area via IB/hfi1 of the Linux ...
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This computer vulnerability alert impacts software or systems such as Linux, openSUSE Leap.
Our Vigil@nce team determined that the severity of this computer threat alert 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 vulnerability.
Solutions for this threat 
Workarounds for this vulnerability are not yet public.
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