diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-09 22:04:16 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-11 20:18:46 +0100 |
| commit | 05493d7d43be66358ae83dd46b9325b4b0a405c8 (patch) | |
| tree | ff02af46c2b618250d1093a6cad97fd9cf421f1b | |
| parent | 8819aa775bd483c87e34043ce366a19661f01702 (diff) | |
| download | ffmpeg-05493d7d43be66358ae83dd46b9325b4b0a405c8.tar.gz | |
avformat/aviobuf: Delay buffer downsizing until asserts are met
Fixes: Assertion failure
Fixes: 15151/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5757079496687616
Fixes: 15205/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5767573242642432
May fix: Ticket7094
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0334632d5c02720f1829d59cd20c009584b5b163)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/aviobuf.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c index e752d0e1a6..60ab69c5b0 100644 --- a/libavformat/aviobuf.c +++ b/libavformat/aviobuf.c @@ -570,7 +570,7 @@ static void fill_buffer(AVIOContext *s) } /* make buffer smaller in case it ended up large after probing */ - if (s->read_packet && s->orig_buffer_size && s->buffer_size > s->orig_buffer_size) { + if (s->read_packet && s->orig_buffer_size && s->buffer_size > s->orig_buffer_size && len >= s->orig_buffer_size) { if (dst == s->buffer && s->buf_ptr != dst) { int ret = ffio_set_buf_size(s, s->orig_buffer_size); if (ret < 0) @@ -578,7 +578,6 @@ static void fill_buffer(AVIOContext *s) s->checksum_ptr = dst = s->buffer; } - av_assert0(len >= s->orig_buffer_size); len = s->orig_buffer_size; } |