CVE-2026-43272 ring-buffer: Fix possible dereference of uninitialized pointer

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix possible dereference of uninitialized pointer There is a pointer headpage in rbmetavalidateevents which is not initialized at the beginning of a function. This pointer can be dereferenced if there is a failure...

CVE-2026-43272

CVE-2026-43272 concerns the Linux kernel ring-buffer component. The root cause is an uninitialized pointer in rb_meta_validate_events(), which can be dereferenced during a reader-page validation failure, potentially causing a system crash or instability. The issue is fixed by initializing orig_he...