Vigil@nce - Linux kernel: buffer overflow via vgacon_scrollback_update
September 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer-vulnerabilities-watch-and-alert
SYNTHESIS OF THE VULNERABILITY
– Impacted products: Linux, openSUSE Leap, SUSE Linux Enterprise
Desktop, SLES.
– Severity: 2/4.
– Consequences: administrator access/rights, denial of service on
server.
– Provenance: user shell.
– Confidence: confirmed by the editor (5/5).
– Creation date: 28/07/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a buffer overflow via
vgacon_scrollback_update() of the Linux kernel, in order to
trigger a denial of service, and possibly to run code.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Linux-kernel-buffer-overflow-via-vgacon-scrollback-update-32928