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)
{
"affected": [
{
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"ecosystem": "NuGet",
"name": "Magick.NET-Q16-AnyCPU"
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{
"package": {
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"name": "Magick.NET-Q8-x64"
},
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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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Sightings
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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