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JLSEC-2026-949 High 7.5

ImageMagick has Division-by-Zero in YUV sampling factor validation, which leads to crash

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JLSEC Published
Modified
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Packages
ImageMagick_jll < 7.1.2023+0
Upstream
CVE-2026-25799 GHSA-543g-8grm-9cw6 EUVD-2026-7441

A logic error in YUV sampling factor validation allows an invalid sampling factor to bypass checks and trigger a division-by-zero during image loading, resulting in a reliable denial-of-service.

coders/yuv.c:210:47: runtime error: division by zero
AddressSanitizer:DEADLYSIGNAL
=================================================================
==3543373==ERROR: AddressSanitizer: UNKNOWN SIGNAL on unknown address 0x000000000000 (pc 0x55deeb4d723c bp 0x7fffc28d34d0 sp 0x7fffc28d3320 T0)
    #0 0x55deeb4d723c in ReadYUVImage coders/yuv.c:210
    #1 0x55deeb751dff in ReadImage MagickCore/constitute.c:743
    #2 0x55deeb756374 in ReadImages MagickCore/constitute.c:1082
    #3 0x55deec682375 in CLINoImageOperator MagickWand/operation.c:4959
    #4 0x55deec6887ed in CLIOption MagickWand/operation.c:5473
    #5 0x55deec32843b in ProcessCommandOptions MagickWand/magick-cli.c:653
    #6 0x55deec32b99b in MagickImageCommand MagickWand/magick-cli.c:1392
    #7 0x55deec324d58 in MagickCommandGenesis MagickWand/magick-cli.c:177
    #8 0x55deead82519 in MagickMain utilities/magick.c:162
    #9 0x55deead828be in main utilities/magick.c:193
    #10 0x7fb90807fd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
    #11 0x7fb90807fe3f in __libc_start_main_impl ../csu/libc-start.c:392
    #12 0x55deead81974 in _start (/data/ylwang/LargeScan/targets/ImageMagick/utilities/magick+0x22fb974)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: UNKNOWN SIGNAL coders/yuv.c:210 in ReadYUVImage
==3543373==ABORTING

References