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Vigil@nce - Linux kernel: NULL pointer dereference via propagate_one
May 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can force a NULL pointer to be dereferenced in
propagate_one() on the Linux kernel, in order to trigger a denial
of service.
Impacted products: Fedora, Linux.
Severity: 1/4.
Creation date: 12/05/2016.
DESCRIPTION OF THE VULNERABILITY
The Linux kernel support recursive mounts.
However, the propagate_one() function of the fs/pnode.c file does
not check if a pointer is NULL, before using it.
An attacker can therefore force a NULL pointer to be dereferenced
in propagate_one() on the Linux kernel, in order to trigger a
denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Linux-kernel-NULL-pointer-dereference-via-propagate-one-19600
