[FFmpeg-devel] [PATCH 13/15] avformat/xwma: sanity check bits_per_coded_sample
Michael Niedermayer
michael at niedermayer.cc
Sun Oct 1 01:30:44 EEST 2023
Fixes: signed integer overflow: 65312 * 524296 cannot be represented in type 'int'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_XWMA_fuzzer-6595971445555200
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavformat/xwma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/xwma.c b/libavformat/xwma.c
index 12689f37fd7..b830f9ed75f 100644
--- a/libavformat/xwma.c
+++ b/libavformat/xwma.c
@@ -151,7 +151,7 @@ static int xwma_read_header(AVFormatContext *s)
st->codecpar->ch_layout.nb_channels);
return AVERROR_INVALIDDATA;
}
- if (!st->codecpar->bits_per_coded_sample) {
+ if (!st->codecpar->bits_per_coded_sample || st->codecpar->bits_per_coded_sample > 64) {
av_log(s, AV_LOG_WARNING, "Invalid bits_per_coded_sample: %d\n",
st->codecpar->bits_per_coded_sample);
return AVERROR_INVALIDDATA;
--
2.17.1
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