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:*:*:*:*:*:*:x86:* versions up to (including) 4.16

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

NIST CWE-119

https://xenbits.xenproject.org/xsa/advisory-437.html No Types Assigned

https://xenbits.xenproject.org/xsa/advisory-437.html Patch, Vendor Advisory

Arm provides multiple helpers to clean & invalidate the cache
for a given region.  This is, for instance, used when allocating
guest memory to ensure any writes (such as the ones during scrubbing)
have reached memory before handing over the page to a guest.

Unfortunately, the arithmetics in the helpers can overflow and would
then result to skip the cache cleaning/invalidation.  Therefore there
is no guarantee when all the writes will reach the memory.

Xen Project https://xenbits.xenproject.org/xsa/advisory-437.html [No types assigned]