In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Unwind debug trap enable on copy_to_user failure If kfd_dbg_trap_enable() fails while copying runtime_info to userspace, it had already activated the trap, set debug_trap_enabled, taken an extra process reference, and opened the debug event file. Return -EFAULT without unwinding that state, leaving inconsistent trap state and a refcount imbalance that could break later DISABLE/ENABLE. On copy_to_user failure, deactivate the trap and undo the rest of the enable setup before returning.
https://git.kernel.org/stable/c/656a40bdc20def58790b8512e6000195436d8855
https://git.kernel.org/stable/c/641be20110cdfb6d921605adb42a764a0fccac54
https://git.kernel.org/stable/c/1b39f46eec2f907417d4955bb88434170f94a8d8
https://git.kernel.org/stable/c/01112e241e37f9ac98b6f418d93ce2e0b87b7ee0