CVE-2026-70652 — libvips: Possible heap-based buffer read overflow when resizing and re-encoding a JPEG with gain map
libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, libvips built with libultrahdr support can incorrectly size an output buffer in libvip…
Published: 2026-08-20 · CVSS: 2.0 · CVSS 4.0
libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, libvips built with libultrahdr support can incorrectly size an output buffer in libvips/foreign/uhdrsave.c within vips_foreign_save_uhdr_set_raw_hdr when a pipeline enlarges an incoming JPEG to a very large output before encoding a gain map through VipsForeignSaveUhdr. The undersized allocation can cause a heap buffer over-read that may disclose adjacent data or crash the process. This issue is fixed in version 8.18.3.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7