CVE-2023-52788

In the Linux kernel, the following vulnerability has been resolved: i915/perf: Fix NULL deref bugs with drmdbg calls When i915 perf interface is not available dereferencing it will lead to NULL dereferences. As returning -ENOTSUPP is pretty clear return when perf interface is not available...

CVE-2023-52788

In the Linux kernel, the following vulnerability has been resolved: i915/perf: Fix NULL deref bugs with drmdbg calls When i915 perf interface is not available dereferencing it will lead to NULL dereferences. As returning -ENOTSUPP is pretty clear return when perf interface is not available...

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...