A flaw was found in libcupsfilters. The cfIEEE1284NormalizeMakeModel() function enters an infinite loop when processing a printer-advertised IEEE-1284 device ID with an empty model field, causing sustained CPU consumption. A network-adjacent attacker could exploit this by broadcasting a specially crafted printer advertisement, leading to denial of service.
If automatic network printer discovery is not strictly necessary for your environment, stopping the service completely eliminates the vulnerable attack surface.If you must use cups-browsed for legitimate operational reasons, you should prevent untrusted networks from feeding data to the daemon.