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Re: [Qemu-devel] [PATCH for-2.0 40/47] block: Limit request size (CVE-20


From: Max Reitz
Subject: Re: [Qemu-devel] [PATCH for-2.0 40/47] block: Limit request size (CVE-2014-0143)
Date: Sat, 29 Mar 2014 00:24:00 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0

On 26.03.2014 13:06, Stefan Hajnoczi wrote:
From: Kevin Wolf <address@hidden>

Limiting the size of a single request to INT_MAX not only fixes a
direct integer overflow in bdrv_check_request() (which would only
trigger bad behaviour with ridiculously huge images, as in close to
2^64 bytes), but can also prevent overflows in all block drivers.

Signed-off-by: Kevin Wolf <address@hidden>
---
  block.c | 4 ++++
  1 file changed, 4 insertions(+)

Reviewed-by: Max Reitz <address@hidden>



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