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[Xen-devel] [PATCH] fxsave/fxrstor adjustments
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| Subject: | [Xen-devel] [PATCH] fxsave/fxrstor adjustments |
| From: | "Jan Beulich" <jbeulich@xxxxxxxxxx> |
| Date: | Mon, 24 Apr 2006 17:31:14 +0200 |
| Delivery-date: | Mon, 24 Apr 2006 08:30:53 -0700 |
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This patch addresses CVE-2006-1056 (information leak from fxsave/fxrstor on AMD CPUs) and also adjusts 64-bit handling so that full 64-bit RIP/RDP values get saved/restored. More fine-grained handling may be needed if 32-bit processes are expected to properly see their selectors (native Linux doesn't currently do that either, but there is a patch to adjust it there). Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
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