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Vigil@nce - Linux kernel: privilege escalation via signal

May 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2

SYNTHESIS OF THE VULNERABILITY

Impacted products: Linux.

Severity: 1/4.

Consequences: administrator access/rights, privileged
access/rights.

Provenance: user shell.

Confidence: confirmed by the editor (5/5).

Creation date: 13/05/2020.

DESCRIPTION OF THE VULNERABILITY

An attacker can bypass restrictions on the kill system call of the
Linux kernel, in order to escalate his privileges.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Linux-kernel-privilege-escalation-via-signal-32261


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