1. ffmpeg
  2. Commit 6e5238d55f2e96fd3f7cc10891794273574c471a
Browse code

avcodec/fic: Fail on invalid slice size/off

Fixes: Timeout
Fixes: 11486/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FIC_fuzzer-5677133863583744

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 30a7a81cdc2ee2eac6d3271439c43f11b7327b3e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Michael Niedermayer authored on 2018/12/17 05:43:07
Showing 1 changed files
libavcodec/fic.c
History View file @ 6e5238d
... ... 
@@ -386,6 +386,8 @@ static int fic_decode_frame(AVCodecContext *avctx, void *data,
386 386 
             slice_h      = FFALIGN(avctx->height - ctx->slice_h * (nslices - 1), 16);
387 387 
         } else {
388 388 
             slice_size = AV_RB32(src + tsize + FIC_HEADER_SIZE + slice * 4 + 4);
389 
+            if (slice_size < slice_off)
390 
+                return AVERROR_INVALIDDATA;
389 391 
         }
390 392
391 393 
         if (slice_size < slice_off || slice_size > msize)