Medium6.1Red Hat Linux

Medium [CVE-2026-70651] Denial of Service via integer overflow in multi-page TIFF image processing

This medium-severity Red Hat Linux advisory covers CVE-2026-70651.

CVE-2026-70651 Published Aug 20, 2026Updated by vendor Aug 20, 2026

CVE-2026-70651

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, libvips built without libtiff support but with ImageMagick support can overflow the combined frame height while loading a crafted multi-page TIFF through VipsForeignLoadMagick.

The vulnerable calculations in libvips/foreign/magick6load.c and libvips/foreign/magick7load.c multiply the per-page Ysize by n_frames without a checked bound, which can cause a heap buffer over-read and process crash. Most package-manager builds include libtiff and do not use this affected fallback path.

This issue is fixed in version 8.18.3. This overflow, caused by unchecked calculations of image frame height, can lead to a heap buffer over-read and result in a process crash, causing a Denial of Service (DoS).

This Moderate impact flaw in libvips occurs when the library is built without libtiff support but with ImageMagick, allowing a local attacker to trigger a denial of service by providing a crafted multi-page TIFF image. Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H).

Weakness: CWE-190.

Affected versions

< 8.18.3

Official advisory · high-confidence parse· fetched 58 minutes ago·verify at source

Fixed versions

8.18.3

Official advisory · high-confidence parse· fetched 58 minutes ago·verify at source

Mitigation

Upgrade to a fixed release: 8.18.3. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 58 minutes ago·verify at source

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