graphicsmagick/coder_PNG_fuzzer: Use-of-uninitialized-value in ReadPNGImage

2018-06-17T13:03:21
ID OSSFUZZ-8944
Type ossfuzz
Reporter Google
Modified 2018-07-18T15:22:19

Description

Project: http://hg.code.sf.net/p/graphicsmagick/code

Detailed report: https://oss-fuzz.com/testcase?key=5146983567196160

Project: graphicsmagick Fuzzer: libFuzzer_graphicsmagick_coder_PNG_fuzzer Fuzz target binary: coder_PNG_fuzzer Job Type: libfuzzer_msan_graphicsmagick Platform Id: linux

Crash Type: Use-of-uninitialized-value Crash Address: Crash State: ReadPNGImage ReadImage BlobToImage

Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_graphicsmagick&range=201805110540:201805251618

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5146983567196160

Issue manually filed by: alex.gaynor

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for more information.

This bug is subject to a 90 day disclosure deadline. If 90 days elapse without an upstream patch, then the bug report will automatically become visible to the public.

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