GitHub Advisoryadvisory · NuGet

GHSA-vhqj-f5cj-9x8h ImageMagick has heap-buffer-overflow via signed integer overflow in WriteUHDRImage when writing UHDR images with large dimensions

HIGH Published 2026-02-24 Modified 2026-04-08 Official page ↗
Aliases
CVE-2026-25794
Ecosystem
NuGet
Packages
Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU, Magick.NET-Q16-HDRI-OpenMP-arm64, Magick.NET-Q16-HDRI-OpenMP-x64, Magick.NET-Q16-HDRI-arm64, Magick.NET-Q16-HDRI-x64, Magick.NET-Q16-HDRI-x86, Magick.NET-Q16-OpenMP-arm64, Magick.NET-Q16-OpenMP-x64, Magick.NET-Q16-OpenMP-x86, Magick.NET-Q16-arm64, Magick.NET-Q16-x64, Magick.NET-Q16-x86, Magick.NET-Q8-AnyCPU, Magick.NET-Q8-OpenMP-arm64, Magick.NET-Q8-OpenMP-x64, Magick.NET-Q8-arm64, Magick.NET-Q8-x64, Magick.NET-Q8-x86
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Weaknesses
CWE-122, CWE-190
Reviewed
2026-02-24

Affected packages

• NuGet Magick.NET-Q16-AnyCPU: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-HDRI-AnyCPU: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-HDRI-OpenMP-arm64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-HDRI-OpenMP-x64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-HDRI-arm64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-HDRI-x64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-HDRI-x86: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-OpenMP-arm64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-OpenMP-x64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-OpenMP-x86: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-arm64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-x64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q16-x86: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q8-AnyCPU: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q8-OpenMP-arm64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q8-OpenMP-x64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q8-arm64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q8-x64: < 14.10.3 → fixed in 14.10.3 • NuGet Magick.NET-Q8-x86: < 14.10.3 → fixed in 14.10.3

Description

`WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. When image dimensions are large, the multiplication overflows 32-bit `int`, causing an undersized heap allocation followed by an out-of-bounds write. This can crash the process or potentially lead to an out of bounds heap write. ``` ==1575126==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7fc382ef3820 at pc 0x5560d31f229f bp 0x7ffe865f9530 sp 0x7ffe865f9520 WRITE of size 8 at 0x7fc382ef3820 thread T0 #0 0x5560d31f229e in WriteUHDRImage coders/uhdr.c:807 ```

Related

Alias · CVE (1)

  • CVE-2026-25794 ImageMagick is free and open-source software used for editing and manipulating digital images. vulnerability

Weakness · CWE (2)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-190 Integer Overflow or Wraparound weakness

References