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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-20 00:11:34 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-10 16:04:26 +0200 |
| commit | e8f9a3690d2c8fe79f9ffe60087c705b952c11a0 (patch) | |
| tree | 8e4e3f712c74c870430e51122e4ffc83bd71919a | |
| parent | 00c664f10ed8d926a88267fae932350927d58160 (diff) | |
| download | ffmpeg-e8f9a3690d2c8fe79f9ffe60087c705b952c11a0.tar.gz | |
avformat/paf: Check for EOF before allocation in read_header()
Fixes: OOM
Fixes: 26584/clusterfuzz-testcase-minimized-ffmpeg_dem_PAF_fuzzer-5172661183053824
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit bcb1e9d3b9b97359e01e5978067c8ee558efa8b4)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/paf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavformat/paf.c b/libavformat/paf.c index 86466907dd..116c4e332f 100644 --- a/libavformat/paf.c +++ b/libavformat/paf.c @@ -136,6 +136,10 @@ static int read_header(AVFormatContext *s) p->start_offset = avio_rl32(pb); p->max_video_blks = avio_rl32(pb); p->max_audio_blks = avio_rl32(pb); + + if (avio_feof(pb)) + return AVERROR_INVALIDDATA; + if (p->buffer_size < 175 || p->max_audio_blks < 2 || p->max_video_blks < 1 || |