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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-28 23:43:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-19 00:05:50 +0100 |
| commit | c48110a4a4b3ba87cb3ffe66753bff13c618a04d (patch) | |
| tree | fbdba57bb188f9cbaf64c8716c6b6c6d9aba93c7 | |
| parent | 7d7ae689729ab331d67c2e17442715c75aca6e4a (diff) | |
| download | ffmpeg-c48110a4a4b3ba87cb3ffe66753bff13c618a04d.tar.gz | |
avformat/id3v2: Check against max compression ratio before allocation
Fixes: Timeout (>10sec -> 12ms)
Fixes: 27612/clusterfuzz-testcase-minimized-ffmpeg_dem_PCM_S24BE_fuzzer-6605893000757248
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/id3v2.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/id3v2.c b/libavformat/id3v2.c index 336a3964de..97f6cc8a68 100644 --- a/libavformat/id3v2.c +++ b/libavformat/id3v2.c @@ -995,6 +995,8 @@ static void id3v2_parse(AVIOContext *pb, AVDictionary **metadata, if (tlen <= 0) goto seek; + if (dlen / 32768 > tlen) + goto seek; av_fast_malloc(&uncompressed_buffer, &uncompressed_buffer_size, dlen); if (!uncompressed_buffer) { |