ffmpeg/ffmpeg_AV_CODEC_ID_DXV_fuzzer: Heap-buffer-overflow in dxt1_block_internal

2019-06-29T15:38:20
ID OSSFUZZ-15556
Type ossfuzz
Reporter Google
Modified 2019-08-08T15:28:46

Description

Project: https://git.ffmpeg.org/ffmpeg.git

Detailed report: https://oss-fuzz.com/testcase?key=5670831067234304

Project: ffmpeg Fuzzer: afl_ffmpeg_AV_CODEC_ID_DXV_fuzzer Fuzz target binary: ffmpeg_AV_CODEC_ID_DXV_fuzzer Job Type: afl_asan_ffmpeg Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE 4 Crash Address: 0x7f3a46a3c84f Crash State: dxt1_block_internal dxt1_block decompress_texture_thread

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=afl_asan_ffmpeg&range=201807100602:201807102346

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5670831067234304

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for instructions to reproduce this bug locally.

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.