CVE-2026-106067: Gimp: gimp: heap buffer overflow in hot color filter on oversized image
A heap-based buffer overflow was found in GIMP’s Hot color filter plug-in. For very large images, a pixel buffer is allocated using overflowing 32-bit width height (and related) arithmetic while the filter’s pixel access path uses the true image size, after integer overflow in the allocation size
Other sources
Finding 7. plug-ins/common/hot.c, pluginCore() (~429–443, 618). Same wrapped allocation vs internal/GEGL consumer extent. ASan WRITE. Vector: apply Hot filter on oversized image (filter path, not file parser). CVSS tentative: 6.3 (AC:H).
— Red Hat