ImageMagick has an integer overflow in despeckle operation causing a heap buffer overflow on 32-bit builds

Description

==1551685==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xea2fb818 at pc 0x56cbc42a bp 0xffc4ce48 sp 0xffc4ce38
WRITE of size 8 at 0xea2fb818 thread T0

References

• ImageMagick/ImageMagick security advisory · WEB
• nvd.nist.gov/vuln/detail/CVE-2026-34238 · ADVISORY
• ImageMagick/ImageMagick commit bcd8519 · WEB
• ImageMagick/ImageMagick · PACKAGE
• ImageMagick/ImageMagick release 7.1.2-19 · WEB
• dlemstra/Magick.NET release 14.12.0 · WEB

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