JLSEC-2026-856

A flaw was found in ImageMagick in coders/txt.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned long long. This would most likely lead to an impact to application availability, but...

ImageMagick: Memory leak in coders/txt.c without freetype

If a texture attribute is specified for a TXT file, an attempt will be made to read it via texture=ReadImagereadinfo,exception;. Later, when retrieving metrics via the GetTypeMetrics function, if this function fails i.e., status == MagickFalse, the calling function will exit immediately but fail ...

graphicsmagick:coder_TXT_fuzzer: Use-of-uninitialized-value in GetColorTuple

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed Report: https://oss-fuzz.com/testcase?key=4725593437437952 Project: graphicsmagick Fuzzing Engine: libFuzzer Fuzz Target: coderTXTfuzzer Job Type: libfuzzermsangraphicsmagick Platform Id: linux Crash Type: Use-of-uninitialized-value...

graphicsmagick:coder_TXT_fuzzer: Use-of-uninitialized-value in ReadBlobString

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed Report: https://oss-fuzz.com/testcase?key=5515973755273216 Project: graphicsmagick Fuzzing Engine: libFuzzer Fuzz Target: coderTXTfuzzer Job Type: libfuzzermsangraphicsmagick Platform Id: linux Crash Type: Use-of-uninitialized-value...

graphicsmagick:coder_TXT_fuzzer: Stack-buffer-overflow in ReadBlobString

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed Report: https://oss-fuzz.com/testcase?key=6346635882135552 Project: graphicsmagick Fuzzing Engine: honggfuzz Fuzz Target: coderTXTfuzzer Job Type: honggfuzzasangraphicsmagick Platform Id: linux Crash Type: Stack-buffer-overflow WRITE 1...