In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: Avoid use-after-free in dbg for hciaddadvmonitor() KSAN reports use-after-free in hciaddadvmonitor(). While adding an adv monitor, hciaddadvmonitor() calls -> msftaddmonitorpattern() calls -> msftaddmonitorsync() calls -> msftlemonitoradvertisementcb() calls in an error case -> hcifreeadvmonitor() which frees the *moniter. This is referenced by btdevdbg() in hciaddadvmonitor(). Fix the btdevdbg() by using handle instead of monitor->handle.