News
Vigil@nce - Linux kernel: use after free via io_grab_files
April 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability
SYNTHESIS OF THE VULNERABILITY
Impacted products: Linux.
Severity: 2/4.
Consequences: administrator access/rights, denial of service on
server.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 08/02/2021.
DESCRIPTION OF THE VULNERABILITY
An attacker can force the usage of a freed memory area via
io_grab_files() 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-use-after-free-via-io-grab-files-34507
