openh264:decoder_fuzzer: Heap-use-after-free in WelsDec::SetUnRef

2019-10-22T17:07:21
ID OSSFUZZ-18458
Type ossfuzz
Reporter Google
Modified 2019-11-27T16:45:24

Description

Project: https://github.com/cisco/openh264.git

Detailed Report: https://oss-fuzz.com/testcase?key=5755524074700800

Project: openh264 Fuzzing Engine: libFuzzer Fuzz Target: decoder_fuzzer Job Type: libfuzzer_asan_i386_openh264 Platform Id: linux

Crash Type: Heap-use-after-free WRITE 1 Crash Address: 0xf5c01a17 Crash State: WelsDec::SetUnRef WelsDec::SlidingWindow WelsDec::WelsMarkAsRef

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_i386_openh264&range=201910210218:201910220551

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5755524074700800

Issue filed automatically.

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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.