From ad15735158c2f127a05ed4b8d9d1dbf785bd76fe Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 17 Sep 2022 21:54:31 +0200 Subject: avformat/dhav: Use 64bit seek_back Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_DHAV_fuzzer-6604736532447232 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 10453f5192869b63b071aee3962ae2c712f9bfd3) Signed-off-by: Michael Niedermayer --- libavformat/dhav.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavformat') diff --git a/libavformat/dhav.c b/libavformat/dhav.c index 6c1cdde32c..33b473d537 100644 --- a/libavformat/dhav.c +++ b/libavformat/dhav.c @@ -242,7 +242,7 @@ static int64_t get_duration(AVFormatContext *s) avio_seek(s->pb, avio_size(s->pb) - 8, SEEK_SET); while (avio_tell(s->pb) > 12 && max_interations--) { if (avio_rl32(s->pb) == MKTAG('d','h','a','v')) { - int seek_back = avio_rl32(s->pb); + int64_t seek_back = avio_rl32(s->pb); avio_seek(s->pb, -seek_back, SEEK_CUR); read_chunk(s); -- cgit v1.2.1