Vigil@nce - Linux kernel: denial of service via get_old_root
April 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulne...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora, Linux.
Consequences: denial of service on server, denial of service on service.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 23/03/2021.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a fatal error via get_old_root() of the Linux kernel, in order to trigger a denial of service.
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