avcodec/indeo2: Check input size against resolution in ir2_decode_plane()

Fixes: Timeout (56 sec -> 14 sec)
Fixes: 13708/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_INDEO2_fuzzer-5656342004498432
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

diff --git a/libavcodec/indeo2.c b/libavcodec/indeo2.c
index 4971b84308f850a248792cb13507392f51d3cf6e..09cb560d8eff3fae7f1d88f217f6c4720cc5940c 100644 (file)
--- a/libavcodec/indeo2.c
+++ b/libavcodec/indeo2.c
@@ -56,7 +56,7 @@ static int ir2_decode_plane(Ir2Context *ctx, int width, int height, uint8_t *dst
     int j;
     int out = 0;
 
-    if (width & 1)
+    if ((width & 1) || width * height / (2*(IR2_CODES - 0x7F)) > get_bits_left(&ctx->gb))
         return AVERROR_INVALIDDATA;
 
     /* first line contain absolute values, other lines contain deltas */