From ff1083c11343da3e87602c3940afa523abd7266a Mon Sep 17 00:00:00 2001
From: Yaowu Xu <yaowu@google.com>
Date: Tue, 15 Oct 2013 13:46:29 -0700
Subject: [PATCH] Prevent access to invalid pointer
The commit added check to make sure no invalid memory access even when
the decoder instance is never initialized.
Change-Id: I4da343d0b3c78c27777ac7f5ce7688562c69f0c5
---
vp9/vp9_dx_iface.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/vp9/vp9_dx_iface.c b/vp9/vp9_dx_iface.c
index 7a5b78634c..6b923162f9 100644
--- a/vp9/vp9_dx_iface.c
+++ b/vp9/vp9_dx_iface.c
@@ -658,8 +658,10 @@ static vpx_codec_err_t get_frame_corrupted(vpx_codec_alg_priv_t *ctx,
if (corrupted) {
VP9D_COMP *pbi = (VP9D_COMP *)ctx->pbi;
- *corrupted = pbi->common.frame_to_show->corrupted;
-
+ if (pbi)
+ *corrupted = pbi->common.frame_to_show->corrupted;
+ else
+ return VPX_CODEC_ERROR;
return VPX_CODEC_OK;
} else {
return VPX_CODEC_INVALID_PARAM;
--
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