Re: Linux: Use-After-Free exploitation

From: Kees Cook
Date: Wed Jun 22 2022 - 19:06:28 EST


On Wed, Jun 22, 2022 at 11:38:39AM +0530, Muni Sekhar wrote:
> Use-After-Free bugs result in kernel crashes. If these bugs result in
> kernel crashes then how is it possible to exploit this vulnerability
> for local privilege escalation?

There are many examples of manipulating memory layout in a way that an
attacker can control. For example, see:
https://googleprojectzero.blogspot.com/2021/10/how-simple-linux-kernel-memory.html

--
Kees Cook