lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Mon, 12 Apr 2010 13:28:32 +0300
From:	Avi Kivity <avi@...hat.com>
To:	wzt.wzt@...il.com
CC:	linux-kernel@...r.kernel.org, mtosatti@...hat.com,
	kvm@...r.kernel.org
Subject: Re: [PATCH] KVM: Enhance the coalesced_mmio_write() parameter to
 avoid stack buffer overflow

On 04/12/2010 04:57 AM, wzt.wzt@...il.com wrote:
> coalesced_mmio_write() is not check the len value, if len is negative,
> memcpy(ring->coalesced_mmio[ring->last].data, val, len); will cause
> stack buffer overflow.
>
>    

How can len be negative?  It can only be between 1 and 8.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists