diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-13 01:20:19 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-14 23:30:37 +0100 |
| commit | a8ff09d7b7cda944b8cf5641ae30c5fa041bbfc0 (patch) | |
| tree | fd6bedca1bd3e18096b30ad94fa79440b2b42fc9 | |
| parent | c8f7f583c073f3ad9b95b7b63b1805f443a5b751 (diff) | |
| download | ffmpeg-a8ff09d7b7cda944b8cf5641ae30c5fa041bbfc0.tar.gz | |
avformat/wtvdec: Avoid (32bit signed) sectors
Fixes: left shift of negative value -14614752
Fixes: 15174/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5670543606415360
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit dd357d76e5faf3ce6fc46ffb924cf30f1cb54af9)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/wtvdec.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c index 27be5c9c04..7300b9fd42 100644 --- a/libavformat/wtvdec.c +++ b/libavformat/wtvdec.c @@ -149,7 +149,7 @@ static int read_ints(AVIOContext *pb, uint32_t *data, int count) * @param depth File allocation table depth * @return NULL on error */ -static AVIOContext * wtvfile_open_sector(int first_sector, uint64_t length, int depth, AVFormatContext *s) +static AVIOContext * wtvfile_open_sector(unsigned first_sector, uint64_t length, int depth, AVFormatContext *s) { AVIOContext *pb; WtvFile *wf; @@ -957,7 +957,8 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p static int read_header(AVFormatContext *s) { WtvContext *wtv = s->priv_data; - int root_sector, root_size; + unsigned root_sector; + int root_size; uint8_t root[WTV_SECTOR_SIZE]; AVIOContext *pb; int64_t timeline_pos; |