Updated CUPS packages that fix a problem where CUPS can hang are now available.
CUPS is a print spooler. Paul Mitcheson reported a situation where the CUPS Internet Printing Protocol (IPP) implementation in CUPS versions prior to 1.1.19 would get into a busy loop. This could result in a denial of service. In order to exploit this bug an attacker would need to have the ability to make a TCP connection to the IPP port (by default 631). Users of CUPS are advised to install these updated packages, which contain a backported security patch and are not vulnerable to this issue. These packages also fix a problem with the LPD backend that could cause jobs to be repeated.