ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Mon Nov 18 12:49:25 2019 +0100| [9d428265808255ad2fc60355fe641aaa4fd3dae4] | committer: Michael Niedermayer
avcodec/wmalosslessdec: Check that padding bits is not more than sample bits Fixes: left shift of 1 by 31 places cannot be represented in type 'int' Fixes: 18817/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5713317180211200 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9d428265808255ad2fc60355fe641aaa4fd3dae4 --- libavcodec/wmalosslessdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index 7ed6ce3135..9489338cef 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -950,6 +950,8 @@ static int decode_subframe(WmallDecodeCtx *s) for (j = 0; j < subframe_len; j++) s->channel_residues[i][j] = get_sbits_long(&s->gb, bits); } else { + if (s->bits_per_sample < padding_zeroes) + return AVERROR_INVALIDDATA; for (i = 0; i < s->num_channels; i++) { if (s->is_channel_coded[i]) { decode_channel_residues(s, i, subframe_len); _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
