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[FFmpeg-devel,2/3] avcodec/ituh263dec: Use 0xffff as error code in h263p_decode_umotion()

Message ID 20170228210738.19786-2-michael@niedermayer.cc
State Accepted
Commit 12c3e120fe8f8d6881001eade390d8a5c185783d
Headers show

Commit Message

Michael Niedermayer Feb. 28, 2017, 9:07 p.m. UTC 
This matches ff_h263_decode_motion() both functions error codes are interpreted by the same common code

Fixes: 690/clusterfuzz-testcase-4744944981901312

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/ituh263dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c
index e39338870f..edb68861ac 100644
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@@ -305,7 +305,7 @@  static int h263p_decode_umotion(MpegEncContext * s, int pred)
       code += get_bits1(&s->gb);
       if (code >= 32768) {
           avpriv_request_sample(s->avctx, "Huge DMV");
-          return AVERROR_INVALIDDATA;
+          return 0xffff;
       }
    }
    sign = code & 1;