Updated libjpeg packages fix security vulnerabilities: A Heap-based buffer overflow was found in the way libjpeg-turbo decompressed certain corrupt JPEG images in which the component count was erroneously set to a large value. An attacker could create a specially-crafted JPEG image that, when opened, could cause an application using libpng to crash or, possibly, execute arbitrary code with the privileges of the user running the application . libjpeg 6b and libjpeg-turbo will use uninitialized memory when decoding images with missing SOS data for the luminance component in presence of valid chroma data . libjpeg-turbo will use uninitialized memory when handling Huffman tables .