[libvirt] [PATCH v2] Fix libvirtd crash possibility

[Eric Blake]

On 09/12/2012 04:44 PM, Martin Kletzander wrote:
> When generating RPC protocol messages, it's strictly needed to have
> continuousline of numbers or RPC messages. However in case anyone
> tries backporting some functionality and will skip a number, there is
> a possibility to make the daemon segfault with newer virsh (version of
> the library, rpc call, etc.) even unintentionally.
> 
> The problem is that the skipped numbers will get func filled with
> NULLs, but there is no check whether these are set before the daemon
> tries to run them. This patch very simply enhances one check and fixes
> that.
> ---
>  src/rpc/virnetserverprogram.c | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)

Given that this fixes CVE-2012-4423, I have gone and backported it to
v0.9.6-maint and v0.9.11-maint.
https://bugzilla.redhat.com/show_bug.cgi?id=857135

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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