Hi! Attached patch fixes ticket #5128.
Please comment, Carl Eugen
From a3dcd65c313e6b456fcb05915508d8d583c1840e Mon Sep 17 00:00:00 2001 From: Carl Eugen Hoyos <ceho...@ag.or.at> Date: Sun, 4 Sep 2016 21:11:02 +0200 Subject: [PATCH] lavc/avpacket: Fix undefined behaviour, do not pass a null pointer to memcpy(). Fixes ticket #5128. --- libavcodec/avpacket.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/avpacket.c b/libavcodec/avpacket.c index 92186892..fa2844d 100644 --- a/libavcodec/avpacket.c +++ b/libavcodec/avpacket.c @@ -581,7 +581,8 @@ int av_packet_ref(AVPacket *dst, const AVPacket *src) ret = packet_alloc(&dst->buf, src->size); if (ret < 0) goto fail; - memcpy(dst->buf->data, src->data, src->size); + if (src->size) + memcpy(dst->buf->data, src->data, src->size); dst->data = dst->buf->data; } else { -- 1.7.10.4
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