References to Advisories, Solutions, and Tools

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Known Affected Software Configurations Switch to CPE 2.2

Change History

OR
     *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

NIST AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

NIST NVD-CWE-noinfo

https://xenbits.xenproject.org/xsa/advisory-446.html No Types Assigned

https://xenbits.xenproject.org/xsa/advisory-446.html Patch, Vendor Advisory

The fixes for XSA-422 (Branch Type Confusion) and XSA-434 (Speculative
Return Stack Overflow) are not IRQ-safe.  It was believed that the
mitigations always operated in contexts with IRQs disabled.

However, the original XSA-254 fix for Meltdown (XPTI) deliberately left
interrupts enabled on two entry paths; one unconditionally, and one
conditionally on whether XPTI was active.

As BTC/SRSO and Meltdown affect different CPU vendors, the mitigations
are not active together by default.  Therefore,

Xen Project https://xenbits.xenproject.org/xsa/advisory-446.html [No types assigned]