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Vulnerability record · CVE-2025-29769 · published 7 April 2025

CVE-2025-29769: Libvips heap-based buffer overflow vulnerability

Libvips · Libvips

libvips is a demand-driven, horizontally threaded image processing library. The heifsave operation could incorrectly determine the presence of an alpha channel in an input when it was not possible to determine the colour interpretation, known internally within libvips as "multiband". There aren't many ways to create a "multiband" input, but it is possible with a well-crafted TIFF image. If a "multiband" TIFF input image had 4 channels and HEIF-based output was requested, this led to libvips creating a 3 channel HEIF image without an alpha channel but then attempting to write 4 channels of data. This caused a heap buffer overflow, which could crash the process. This vulnerability is fixed in 8.16.1.

8.5 CVSS 4.0 High EPSS 0.28% · top 81.3% CWE-122 · Heap-based buffer overflow
8.5CVSS 4.0 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

libvips is a demand-driven, horizontally threaded image processing library. The heifsave operation could incorrectly determine the presence of an alpha channel in an input when it was not possible to determine the colour interpretation, known internally within libvips as "multiband". There aren't many ways to create a "multiband" input, but it is possible with a well-crafted TIFF image. If a "multiband" TIFF input image had 4 channels and HEIF-based output was requested, this led to libvips creating a 3 channel HEIF image without an alpha channel but then attempting to write 4 channels of data. This caused a heap buffer overflow, which could crash the process. This vulnerability is fixed in 8.16.1.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/libvips/libvips/commit/9ab6784f693de50b00fa535b9efbbe9d2cbf71f2 Patch
https://github.com/libvips/libvips/pull/4392 Issue Tracking
https://github.com/libvips/libvips/pull/4394 Issue Tracking
https://github.com/libvips/libvips/security/advisories/GHSA-f8r8-43hh-rghm PatchVendor Advisory
https://issues.oss-fuzz.com/issues/396460413 ExploitIssue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/04/msg00044.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-29769), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.