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SUPPORT.md: Document speculative attacks status of non-shim 32-bit PV
This documents, but does not fix, XSA-370. Reported-by: Jann Horn <jannh@google.com> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Signed-off-by: George Dunlap <george.dunlap@citrix.com> Acked-by: Jan Beulich <jbeulich@suse.com>
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Ian Jackson authored and Jan Beulich committed
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@@ -84,7 +84,16 @@ Traditional Xen PV guest
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No hardware requirements
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Status: Supported
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Status, x86_64: Supported
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Status, x86_32, shim: Supported
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Status, x86_32, without shim: Supported, with caveats
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Due to architectural limitations,
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32-bit PV guests must be assumed to be able to read arbitrary host memory
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using speculative execution attacks.
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Advisories will continue to be issued
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for new vulnerabilities related to un-shimmed 32-bit PV guests
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enabling denial-of-service attacks or privilege escalation attacks.
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### x86/HVM
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