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Medium

Image Magick has a Memory Leak in coders/ashlar.c

  • Disclosed: 24.02.2026
  • Updated: 11.10.2026 11:23

Memory leak exists in coders/ashlar.c. The WriteASHLARImage allocates a structure. However, when an exception is thrown, the allocated memory is not properly released, resulting in a potential memory leak.

```bash
==78968== Memcheck, a memory error detector
==78968== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et al.
==78968== Using Valgrind-3.22.0 and LibVEX; rerun with -h for copyright info
==78968== 
==78968== HEAP SUMMARY:
==78968==     in use at exit: 17,232 bytes in 4 blocks
==78968==   total heap usage: 4,781 allocs, 4,777 frees, 785,472 bytes allocated

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
.NET (NuGet) Magick.NET-Q16-AnyCPU < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-arm64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-HDRI-AnyCPU < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-HDRI-arm64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-HDRI-OpenMP-arm64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-HDRI-OpenMP-x64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-HDRI-x64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-HDRI-x86 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-OpenMP-arm64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-OpenMP-x64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-OpenMP-x86 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q16-x86 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q8-AnyCPU < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q8-arm64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q8-OpenMP-arm64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q8-OpenMP-x64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q8-x64 < 14.10.3 14.10.3
.NET (NuGet) Magick.NET-Q8-x86 < 14.10.3 14.10.3

References

CVSS score 5.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE)
CWE-401
Platform
.NET (NuGet)
Package
Magick.NET-Q16-AnyCPU, Magick.NET-Q16-arm64, Magick.NET-Q16-HDRI-AnyCPU
Disclosed
24.02.2026
Updated
11.10.2026 11:23

Sources and licenses

OSV / GitHub Advisory Database - GHSA-xgm3-v4r9-wfgm - CC BY 4.0

Vulnerability history: Magick.NET-Q16-AnyCPU

All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (165) in the archive
Total entries
165
First → latest
09.2023 09.2026
Without a fix
0
Exploited in attacks
1

Severity breakdown

  • High 27
  • Medium 99
  • Low 39

Disclosures per year

Severity:
  1. ImageMagick has out-of-bounds write in ICON decoder due to incorrect loop
    High · 7.5 CVE-2026-53461 < 14.14.0 14.14.0
  2. ImageMagick: Policy Bypass can Trigger an Out-of-Memory condition
    High · 7.5 CVE-2026-53460 < 14.14.0 14.14.0
  3. ImageMagick: Policy Bypass in DCM decoder could result in image with invalid dimensions
    High · 7.5 CVE-2026-49218 < 14.14.0 14.14.0
  4. ImageMagick: Infinite Loop in the MIFF decoder can lead to CPU exhaustion
    High · 7.5 CVE-2026-46522 < 14.13.1 14.13.1
  5. ImageMagick: Heap Buffer Over-Write in IPL decoder when reading multiple images of different dimensions
    High · 7.5 CVE-2026-46520 < 14.13.1 14.13.1
  6. ImageMagick has a heap Buffer Overflow in ImageMagick MVG decoder
    High · 7.5 CVE-2026-33901 < 14.12.0 14.12.0
  7. ImageMagick has a Stack Overflow in DestroyXMLTree()
    High · 7.5 CVE-2026-33908 < 14.12.0 14.12.0
  8. ImageMagick has stack buffer overflow in MagnifyImage
    High · 7.7 CVE-2026-30929 < 14.10.4 14.10.4
  9. ImageMagick: Integer overflow in DIB coder can result in out of bounds read or write
    High · 8.1 CVE-2026-28693 < 14.10.4 14.10.4
  10. ImageMagick has uninitialized pointer dereference in JBIG decoder
    High · 7.5 CVE-2026-28691 < 14.10.4 14.10.4
  11. ImageMagick vulnerable to stack corruption through long morphology kernel names or arrays
    High · 7.1 CVE-2026-28494 < 14.10.4 14.10.4
  12. ImageMagick: MSL attribute stack buffer overflow leads to out of bounds write.
    High · 7.4 CVE-2026-25968 < 14.10.3 14.10.3
  13. ImageMagick: Integer overflow or wraparound and incorrect conversion between numeric types in the internal SVG decoder
    High · 7.5 CVE-2026-25989 < 14.10.3 14.10.3
  14. ImageMagick: Memory allocation with excessive without limits in the internal SVG decoder
    High · 7.5 CVE-2026-25985 < 14.10.3 14.10.3
  15. Image Magick has a Memory Leak in coders/ashlar.c this entry
    Medium · 5.3 CVE-2026-25969 < 14.10.3 14.10.3
  16. ImageMagick: Stack buffer overflow in FTXT reader via oversized integer field
    High · 7.4 CVE-2026-25967 < 14.10.3 14.10.3
  17. ImageMagick: Policy bypass through path traversal allows reading restricted content despite secured policy
    High · 8.6 CVE-2026-25965 < 14.10.3 14.10.3
  18. ImageMagick has heap-buffer-overflow via signed integer overflow in WriteUHDRImage when writing UHDR images with large dimensions
    High · 8.2 CVE-2026-25794 < 14.10.3 14.10.3
  19. ImageMagick: Infinite loop vulnerability when parsing a PCD file
    High · 7.5 CVE-2026-24485 < 14.10.3 14.10.3
  20. ImageMagick has Possible Heap Information Disclosure in PSD ZIP Decompression
    High · 7.5 CVE-2026-24481 < 14.10.3 14.10.3
Show more (8) Showing 20 of 28

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