CVE-2025-38233

The CVE 2025-38233 entry describes a Linux kernel PPC64 ftrace livepatching issue where r15 is clobbered and not restored in the livepatch sequence, causing kernel faults (example trace shows an oops and bad memory access). Connected docs confirm concrete fixes: restore r15 unconditionally in the...

CVE-2025-38233 powerpc64/ftrace: fix clobbered r15 during livepatching

In the Linux kernel, the following vulnerability has been resolved: powerpc64/ftrace: fix clobbered r15 during livepatching While r15 is clobbered always with PPCFTRACEOUTOFLINE, it is not restored in livepatch sequence leading to not so obvious fails like below: BUG: Unable to handle kernel data...