libjpeg-turbo 1.5.2 has a NULL Pointer Dereference in jdpostct.c and jquant1.c via a crafted JPEG file.Referenceshttps://usn.ubuntu.com/3706-1/https://github.com/mozilla/mozjpeg/issues/268https://github.com/libjpeg-turbo/libjpeg-turbo/pull/182
