Vigil@nce - Linux kernel: privilege escalation via KVM Preemption Timer
April 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, Fedora, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Consequences: administrator access/rights, privileged access/rights.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 13/02/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can bypass restrictions via KVM Preemption Timer of the Linux kernel, in order to escalate his privileges.
ACCESS TO THE FULL VIGIL@NCE BULLETIN