ImageMagick is free and open-source software used for editing and manipulating digital images. Versions prior to 7.1.2-13 have a stack overflow via infinite recursion in MSL (Magick Scripting Language) `<write>` command when writing to MSL format. Version 7.1.2-13 fixes the issue.
Affected: NuGet: Magick.NET-Q8-x64, NuGet: Magick.NET-Q8-arm64, NuGet: Magick.NET-Q8-x86, NuGet: Magick.NET-Q8-OpenMP-x64, NuGet: Magick.NET-Q8-OpenMP-arm64, NuGet: Magick.NET-Q16-x64, NuGet: Magick.NET-Q16-arm64, NuGet: Magick.NET-Q16-x86, NuGet: Magick.NET-Q16-OpenMP-x64, NuGet: Magick.NET-Q16-OpenMP-arm64 and 8 more
## Summary
Stack overflow via infinite recursion in MSL (Magick Scripting Language) `<write>` command when writing to MSL format.
## Version
- ImageMagick 7.x (tested on current main branch) - Commit: HEAD - Requires: libxml2 support (for MSL parsing)
## Steps to Reproduce
### Method 1: Using ImageMagick directly
```bash magick MSL:recursive.msl out.png ```
### Method 2: Using OSS-Fuzz reproduce
```bash python3 infra/helper.py build_fuzzers imagemagick python3 infra/helper.py reproduce imagemagick msl_fuzzer recursive.msl ```
Or run the fuzzer directly: ```bash ./msl_fuzzer recursive.msl ```
## Expected Behavior
ImageMagick should handle recursive MSL references gracefully by detecting the loop and returning an error.
## Actual Behavior
Stack overflow causes process crash:
``` AddressSanitizer:DEADLYSIGNAL ==PID==ERROR: AddressSanitizer: stack-overflow #0 MSLStartElement /src/imagemagick/coders/msl.c:7045 #1 xmlParseStartTag /src/libxml2/parser.c #2 xmlParseChunk /src/libxml2/parser.c:11273 #3 ProcessMSLScript /src/imagemagick/coders/msl.c:7405 #4 WriteMSLImage /src/imagemagick/coders/msl.c:7867 #5 WriteImage /src/imagemagick/MagickCore/constitute.c:1346 #6 MSLStartElement /src/imagemagick/coders/msl.c:7045 ... (infinite recursion, 287+ frames) ```
## Root Cause Analysis
In `coders/msl.c`, the `<write>` command handler in `MSLStartElement()` (line ~7045) calls `WriteImage()`. When the output filename specifies MSL format (`msl:…
Affected: openEuler:20.03-LTS-SP4: ImageMagick
Use ImageMagick to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, GIF, HEIC, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves. Security Fix(es):
ImageMagick contains an infinite recursion vulnerability in MSL script processing that can lead to stack overflow. The vulnerability exists in the ProcessMSLScript function, where attackers can craft malicious MSL scripts to trigger infinite recursion, ultimately causing stack overflow.(CVE-2026-23874)
ImageMagick is a widely used free and open-source software for image editing and manipulation. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability exists in the XBM image decoder (ReadXBMImage function). An attacker can exploit this by crafting a malicious XBM image file, causing controlled data to be written past the bounds of an allocated heap buffer during processing. Any operation that reads or identifies an image, such as common image upload and processing pipelines, can trigger this overflow, potentially leading to arbitrary code execution or application crash.(CVE-2026-23876)
ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer der…
ImageMagick-7.1.2.13-2.1 on GA media
Security update for ImageMagick
Affected: Ubuntu:Pro:14.04:LTS: imagemagick, Ubuntu:Pro:16.04:LTS: imagemagick, Ubuntu:Pro:18.04:LTS: imagemagick, Ubuntu:Pro:20.04:LTS: imagemagick, Ubuntu:Pro:22.04:LTS: imagemagick, Ubuntu:Pro:24.04:LTS: imagemagick, Ubuntu:25.10: imagemagick, Ubuntu:Pro:26.04:LTS: imagemagick
ImageMagick is free and open-source software used for editing and manipulating digital images. Versions prior to 7.1.2-13 have a stack overflow via infinite recursion in MSL (Magick Scripting Language) `<write>` command when writing to MSL format. Version 7.1.2-13 fixes the issue.
Ein Angreifer kann mehrere Schwachstellen in ImageMagick ausnutzen, um einen Denial of Service Angriff durchzuführen, beliebigen Code auszuführen oder Daten zu manipulieren.