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Re: [Xen-devel] [PATCH] proper bounds check in do_set_gdt entry point
| To: | Chris Wright <chrisw@xxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] proper bounds check in do_set_gdt entry point |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Mon, 27 Jun 2005 20:21:32 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Mon, 27 Jun 2005 19:24:45 +0000 |
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| In-reply-to: | <20050627184157.GM9157@xxxxxxxxxxxxxxxxxxx> |
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| References: | <20050627184157.GM9157@xxxxxxxxxxxxxxxxxxx> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
On 27 Jun 2005, at 19:41, Chris Wright wrote: Unless I missed something, not bounds checking entries in do_set_gdt is a security hole. Signed-off-by: Chris Wright <chrisw@xxxxxxxx> The check happens in set_gdt(). do_set_gdt is just a wrapper with a copy_from_user plus conditional tlb flush. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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