openharmony/third_party_ffmpeg
1
0
Fork 0
mirror of https://gitee.com/openharmony/third_party_ffmpeg synced 2024-11-23 11:19:55 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

avformat/aviobuf: Delay buffer downsizing until asserts are met

Browse Source 
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>
This commit is contained in:
Michael Niedermayer 2019-06-09 22:04:16 +02:00
parent eb82d19f03
commit 0334632d5c
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
libavformat/aviobuf.c
View File

@ -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;
}