GHSA-G2PR-QXJG-7R2W

Vulnerability from github – Published: 2026-02-24 15:33 – Updated: 2026-02-24 15:33
VLAI?
Summary
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
Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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  ],
  "aliases": [
    "CVE-2026-25796"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-24T15:33:56Z",
    "nvd_published_at": "2026-02-24T01:16:14Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nIn `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.\n\n```\nDirect leak of 13512 byte(s) in 1 object(s) allocated from:\n    #0 0x7f5c11e27887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145\n    #1 0x55cdc38f65c4 in AcquireMagickMemory MagickCore/memory.c:536\n    #2 0x55cdc38f65eb in AcquireCriticalMemory MagickCore/memory.c:612\n    #3 0x55cdc3899e91 in AcquireImage MagickCore/image.c:154\n```",
  "id": "GHSA-g2pr-qxjg-7r2w",
  "modified": "2026-02-24T15:33:57Z",
  "published": "2026-02-24T15:33:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-g2pr-qxjg-7r2w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25796"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ImageMagick/ImageMagick/commit/93ad259ce4f6d641eea0bee73f374af90f35efc3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ImageMagick/ImageMagick"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ImageMagick has memory leak of watermark Image object in ReadSTEGANOImage on multiple error/early-return paths"
}


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