CVE-2026-70652

Summary

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.

Affected Software

Weaknesses

• CWE-126: CWE-126: Buffer Over-read

References

• https://github.com/libvips/libvips/security/advisories/GHSA-h27h-jf9v-m8rg
• https://github.com/libvips/libvips/pull/5039
• https://github.com/libvips/libvips/commit/cff17794f0698a4f47c74bb31c9700b2c83252a8
• https://github.com/libvips/libvips/releases/tag/v8.18.3

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