Vigil@nce - Linux kernel: use after free via btrfs_insert_delayed_items
September 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Linux, SUSE Linux Enterprise Desktop, SLES,
Ubuntu.
Severity: 2/4.
Consequences: administrator access/rights, denial of service on
server.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 03/07/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can force the usage of a freed memory area via
btrfs_insert_delayed_items() 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-btrfs-insert-delayed-items-32699