In the Linux kernel, the following vulnerability has been resolved: tcp: Fix use-after-free of nreq in reqsktimerhandler(). The cited commit replaced inetcskreqskqueuedropandput() with _inetcskreqskqueuedrop() and reqskput() in reqsktimerhandler(). Then, oreq should be passed to reqskput() instead of req; otherwise use-after-free of nreq could happen when reqsk is migrated but the retry attempt failed (e.g. due to timeout). Let's pass oreq to reqskput().