ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Mon May 11 22:17:43 2020 +0200| [f0c0471075fe52ed31c46e038df4280aef5b67a1] | committer: Michael Niedermayer
avcodec/ralf: Check num_blocks before use Fixes: out of array access Fixes: 20659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5739471895265280 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f0c0471075fe52ed31c46e038df4280aef5b67a1 --- libavcodec/ralf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index 08e8043e30..0080b23941 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -482,6 +482,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, init_get_bits(&gb, src + 2, table_size); ctx->num_blocks = 0; while (get_bits_left(&gb) > 0) { + if (ctx->num_blocks >= FF_ARRAY_ELEMS(ctx->block_size)) + return AVERROR_INVALIDDATA; ctx->block_size[ctx->num_blocks] = get_bits(&gb, 13 + avctx->channels); if (get_bits1(&gb)) { ctx->block_pts[ctx->num_blocks] = get_bits(&gb, 9); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
