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[Qemu-devel] [PATCH] Fix -nographic heap corruption

From: Ed Swierk
Subject: [Qemu-devel] [PATCH] Fix -nographic heap corruption
Date: Sun, 30 Apr 2006 20:06:08 -0700

A bug in console.c causes heap corruption when qemu is started without
a graphical console (-nographic). In this case, the console height and
width are both 0, resulting in allocation of a zero-length cells

Heap corruption is caused by code that assumes the cells array always
has at least one element. The attached patch avoids this problem
simply by making the cells array one byte larger than necessary, i.e.
length 1 in the -nographic case.


Attachment: qemu-zero-width-console.patch
Description: Text Data

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