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[FFmpeg-devel,3/3] lavc/mvha: Check init_get_bits8() for failure

Message ID 1574948460-15981-3-git-send-email-mypopydev@gmail.com
State Accepted
Commit 2952d9c5dce4014716ed9693f01447254bf42ee3
Headers show

Commit Message

Jun Zhao Nov. 28, 2019, 1:41 p.m. UTC 
From: Jun Zhao <barryjzhao@tencent.com>

fix potential null pointer dereference

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
---
 libavcodec/mvha.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
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Patch

diff --git a/libavcodec/mvha.c b/libavcodec/mvha.c
index 636b5e6..4b03a79 100644
--- a/libavcodec/mvha.c
+++ b/libavcodec/mvha.c
@@ -190,7 +190,9 @@  static int decode_frame(AVCodecContext *avctx,
         GetBitContext *gb = &s->gb;
         int first_symbol, symbol;
 
-        init_get_bits8(gb, avpkt->data + 8, avpkt->size - 8);
+        ret = init_get_bits8(gb, avpkt->data + 8, avpkt->size - 8);
+        if (ret < 0)
+            return ret;
 
         skip_bits(gb, 24);