breeze/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2026-02-04 14:30:55 +08:00
Code Issues Packages Projects Releases Wiki Activity

avformat/iff: Check that we have a stream in read_dst_frame()

Browse Source 
Fixes: null pointer dereference
Fixes: 385644864/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-4551049565765632

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 8668957ef6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2025-02-09 01:28:17 +01:00
parent 6646dd2825
commit d392931391
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
libavformat/iff.c
View File

@@ -360,6 +360,9 @@ static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
uint64_t chunk_pos, data_pos, data_size;
int ret = AVERROR_EOF;
if (s->nb_streams < 1)
return AVERROR_INVALIDDATA;
while (!avio_feof(pb)) {
chunk_pos = avio_tell(pb);
if (chunk_pos >= iff->body_end)