CVE-2026-70654 libvips: A well-crafted PPM image processed via a custom source could lead to possible heap buffer write overflow

libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, applications that define unusual custom libvips sources and use them to process untrusted uncompressed PPM images can trigger a max/min error in vipssourcereadtomemory in libvips/iofuncs/source.c. The...