Linux · Linux Kernel · CVE-2022-48713
Name of the Vulnerable Software and Affected Versions:
Linux kernel (affected versions not specified)
Description:
The issue is related to a null pointer dereference in the perf/x86/intel/pt component of the Linux kernel, which can cause a kernel crash when a PT stop filter range is hit while tracing. This is due to a missing check for the `buf->single` variable before calling `pt buffer region size`. The problem was introduced by a commit that added support for PT single-range output mode. When execution hits a configured stop filter, the kernel will crash because of the null pointer dereference in `pt handle status` due to calling `pt buffer region size` without a ToPA configured.
Recommendations:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.