avcodec/qdrw: Fix null pointer dereference
authorMichael Niedermayer <michael@niedermayer.cc>
Sun, 4 Jun 2017 19:37:47 +0000 (21:37 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Mon, 5 Jun 2017 21:16:54 +0000 (23:16 +0200)
commita20e708352906217bb4a97080c2ca55bb2c145a1
treea0895bde83d94223dd1968c34b04bd217f38dd56
parent591a3d263247380ca8fb01238d6676d8a3f05632
avcodec/qdrw: Fix null pointer dereference

The RGB555 PACKBITSRGN case tries to read a palette, if such
palette is actually stored then it accesses a null pointer.
All 16bit samples i could find use DIRECTBITSRGN.

Fixes: 2065/clusterfuzz-testcase-minimized-6298930457346048

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 46b865ea9f86cbd12e1bf701913263c7932cccb0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/qdrw.c