From b0259aa248e44dcc6960fa340d6377dd80026105 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 23 Oct 2020 10:53:18 +0200 Subject: [PATCH] avformat/utils: wrap_timestamp() is only needed for less than 64 bits Fixes: shift exponent 64 is too large for 64-bit type 'unsigned long long' Fixes: 26497/clusterfuzz-testcase-minimized-ffmpeg_dem_AVI_fuzzer-5690188355076096 Fixes: 26903/clusterfuzz-testcase-minimized-ffmpeg_dem_LUODAT_fuzzer-5641466929741824 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/utils.c b/libavformat/utils.c index c52f39e1b7..d193f9e85f 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -101,7 +101,7 @@ static int is_relative(int64_t ts) { */ static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp) { - if (st->internal->pts_wrap_behavior != AV_PTS_WRAP_IGNORE && + if (st->internal->pts_wrap_behavior != AV_PTS_WRAP_IGNORE && st->pts_wrap_bits < 64 && st->internal->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) { if (st->internal->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET && timestamp < st->internal->pts_wrap_reference)