Exploiting null-dereferences in the Linux kernel

Posted by Seth Jenkins, Project Zero For a fair amount of time, null-deref bugs were a highly exploitable kernel bug class. Back when the kernel was able to access userland memory without restriction, and userland programs were still able to map the zero page, there were many easy techniques for...

PT-2024-11848 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.1.0-rc7-00103-gef4d3ea40565 Description: The issue is related to a null pointer dereference bug in the io tctx exit cb function. This bug can cause a kernel panic when the task exits to userspace. The problem...