Vigil@nce - Linux kernel: NULL pointer dereference via ext4_empty_dir
December 2019 by Marc Jacob
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Linux.
Severity: 1/4.
Consequences: denial of service on server.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 21/11/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a NULL pointer to be dereferenced via
ext4_empty_dir() of the Linux kernel, in order to trigger a denial
of service.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Linux-kernel-NULL-pointer-dereference-via-ext4-empty-dir-30923