CVE-2026-70652

Name	CVE-2026-70652
Description	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 (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
vips (PTS)	bullseye	8.10.5-2	vulnerable
	bullseye (security)	8.10.5-2+deb11u1	vulnerable
	bookworm	8.14.1-3+deb12u3	vulnerable
	bookworm (security)	8.14.1-3+deb12u2	vulnerable
	trixie	8.16.1-1+deb13u1	vulnerable
	forky, sid	8.18.5-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
vips	source	(unstable)	8.18.3-1

Notes

https://github.com/libvips/libvips/security/advisories/GHSA-h27h-jf9v-m8rg
https://github.com/libvips/libvips/pull/5039
Fixed by: https://github.com/libvips/libvips/commit/cff17794f0698a4f47c74bb31c9700b2c83252a8 (v8.18.3-rc1)