[FFmpeg-devel,3/3] avcodec/pictordec: Error out if more than one plane is unused

Submitted by Michael Niedermayer on Sept. 12, 2018, 1:08 a.m.

Details

Message ID 20180912010808.31637-3-michael@niedermayer.cc
State New
Headers show

Commit Message

Michael Niedermayer Sept. 12, 2018, 1:08 a.m.
Fixes: Timeout
Fixes: 9797/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PICTOR_fuzzer-5664441659031552

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

Patch hide | download patch | download mbox

diff --git a/libavcodec/pictordec.c b/libavcodec/pictordec.c
index b29a484534..65d2d49060 100644
--- a/libavcodec/pictordec.c
+++ b/libavcodec/pictordec.c
@@ -236,6 +236,9 @@  static int decode_frame(AVCodecContext *avctx,
             }
         }
 
+        if (s->nb_planes - plane > 1)
+            return AVERROR_INVALIDDATA;
+
         if (plane < s->nb_planes && x < avctx->width) {
             int run = (y + 1) * avctx->width - x;
             if (bits_per_plane == 8)