731917a800
printer driver and wrapper are often not written with security in mind. While reviewing https://github.com/NixOS/nixpkgs/pull/25654 I found a symlink-race vulnerability within the wrapper code, when writing unique files in /tmp. I expect this script to be reused in other models as well as similar vulnerabilities in the code of other vendors. Therefore I propose to make /tmp of cups.service private so that only processes with the same privileges are able to access these files.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.