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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


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