libjpeg-turbo: heap-buffer-overflow vulnerability in decompress_smooth_data in jdcoefct.c

A heap buffer over-read flaw was found in libjpeg-turbo. For certain types of smoothed jpeg images, the decompresssmoothdata function may improperly enter a condition statement that leads to heap memory read of uninitialized data, which may cause an application crash or loss of confidentiality...