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Date: Wed, 27 Apr 2016 03:03:47 +0000
From: 李强 <>
To: "" <>
CC: "" <>
Subject: CVE Request: Out-of-bands write issue found in qemu


The qemu has an out-of-bands bug in uart_write() function.

In uart_write() function from hw/char/cadence_uart.c, the ‘offset’ isn’t checked and after it is divided by 4 and used to index the ‘r’ array, it will cause an out-of-bands memory write. The value can be controlled by guest and can cause the qemu crash or code execution on host.

The patch is here:


Li Qiang of the Cloud Security Team, Qihoo 360 Inc.

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