In the Linux kernel, the following vulnerability has been resolved: media: v4l2-tpg: prevent the risk of a division by zero As reported by Coverity, the logic at tpgprecalculateline() blindly rescales the buffer even when scaledwitdh is equal to zero. If this ever happens, this will cause a division by zero. Instead, add a WARNON_ONCE() to trigger such cases and return without doing any precalculation.