GHSA-g2pr-qxjg-7r2w
ImageMagick has memory leak of watermark Image object in ReadSTEGANOImage on multiple error/early-return paths
Details
### Summary
In `ReadSTEGANOImage()` (`coders/stegano.c`), the `watermark` Image object is not freed on three early-return paths, resulting in a definite memory leak (~13.5KB+ per invocation) that can be exploited for denial of service.
``` Direct leak of 13512 byte(s) in 1 object(s) allocated from: #0 0x7f5c11e27887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145 #1 0x55cdc38f65c4 in AcquireMagickMemory MagickCore/memory.c:536 #2 0x55cdc38f65eb in AcquireCriticalMemory MagickCore/memory.c:612 #3 0x55cdc3899e91 in AcquireImage MagickCore/image.c:154 ```
Are you affected?
Enter the version of the package you're using.
Affected packages
0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-AnyCPU --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-OpenMP-x86 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-arm64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-x64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q16-x86 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q8-AnyCPU --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q8-arm64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q8-x64 --version 14.10.3 0 Fixed in: 14.10.3 dotnet add package Magick.NET-Q8-x86 --version 14.10.3 References
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-g2pr-qxjg-7r2w [WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-25796 [ADVISORY]
- https://github.com/ImageMagick/ImageMagick/commit/93ad259ce4f6d641eea0bee73f374af90f35efc3 [WEB]
- https://github.com/ImageMagick/ImageMagick [PACKAGE]
- https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3 [WEB]