CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's fastrpc implementation, where the handling of memory mappings during interrupted invokes does not properly acquire the necessary locks. This oversight can lead to race conditions, potentially allowing unauthorized access to memory or causing system instability. Linux system administrators and developers utilizing the fastrpc feature should prioritize addressing this vulnerability to ensure system integrity and security.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke When an invoke is interrupted by a signal, wait_for_completion_interruptible() returns -ERESTARTSYS and fastrpc_internal_invoke() moves every buffer from fl->mmaps onto cctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk runs without holding fl->lock, the lock that serialises fl->mmaps in fastrpc_req_mmap() and fastrpc_req_munmap() everywhere else. Take fl->lock around the move, matching every other fl->mmaps accessor.