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[FFmpeg-devel,2/2] avcodec/truemotion2rt: Check input buffer size

Message ID 20180222033551.17031-2-michael@niedermayer.cc
State Accepted
Commit 8b5c29b6c2ab00f8fb545475238a99f575b5d81d
Headers show

Commit Message

Michael Niedermayer Feb. 22, 2018, 3:35 a.m. UTC 
Fixes: Timeout
Fixes: 6250/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2RT_fuzzer-5479814011027456

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/truemotion2rt.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/libavcodec/truemotion2rt.c b/libavcodec/truemotion2rt.c
index d63918742d..9df0b527bb 100644
--- a/libavcodec/truemotion2rt.c
+++ b/libavcodec/truemotion2rt.c
@@ -116,6 +116,9 @@  static int truemotion2rt_decode_frame(AVCodecContext *avctx, void *data,
     if (ret < 0)
         return ret;
 
+    if (avctx->width / s->hscale * avctx->height * s->delta_size > avpkt->size * 8LL * 4)
+        return AVERROR_INVALIDDATA;
+
     ret = init_get_bits8(gb, avpkt->data + ret, avpkt->size - ret);
     if (ret < 0)
         return ret;