Vigil@nce - Linux kernel: buffer overflow of splice
March 2015 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can generate a buffer overflow in splice() of the
Linux kernel, in order to trigger a denial of service, and
possibly to execute code.
Impacted products: Debian, Linux, RHEL
Severity: 2/4
Creation date: 24/02/2015
DESCRIPTION OF THE VULNERABILITY
The splice() system call transfers data between a file descriptor
and a kernel memory area managed by a special pipe, with no copy
to user’s space memory.
However, if the size of data is greater than the maximal size of a
file, an overflow occurs.
An attacker can therefore generate a buffer overflow in splice()
of the Linux kernel, in order to trigger a denial of service, and
possibly to execute code.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/Linux-kernel-buffer-overflow-of-splice-16250