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Date: Tue, 26 Jan 2016 22:31:42 +0800 (CST)
From: xiaoqixue_1  <>
Subject: a bug in gif2rgb.c in giflib-5.1.2

We find a memory allocation whose size could be zero in gif2rgb.c. 
and It will result to several memory out of bound read and write. the bug in gif2rgb.c:386 :

386 if ((ScreenBuffer = (GifRowType *) 
387 malloc(GifFile->SHeight * sizeof(GifRowType))) == NULL) 
388 GIF_EXIT("Failed to allocate memory required, aborted.");

Please see "" for more details.

the bug was found by Qixue Xiao at Tsinghua University.

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