News
Vigil@nce - Linux kernel: denial of service via CONFIG_AUDITSYSCALL
June 2014 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
A local attacker can use a system call on a Linux kernel with
CONFIG_AUDITSYSCALL, in order to trigger a denial of service.
– Impacted products: Linux
– Severity: 1/4
– Creation date: 20/06/2014
DESCRIPTION OF THE VULNERABILITY
The Linux kernel can be compiled with CONFIG_AUDITSYSCALL, in
order to audit system calls.
However, the arch/x86/kernel/entry_32.S file does not check if the
system call number is too large, which stops the kernel.
A local attacker can therefore use a system call on a Linux kernel
with CONFIG_AUDITSYSCALL, in order to trigger a denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-CONFIG-AUDITSYSCALL-14919
