{"id":40943,"date":"2026-10-19T00:31:38","date_gmt":"2026-10-18T16:31:38","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98471"},"modified":"2026-10-19T00:31:38","modified_gmt":"2026-10-18T16:31:38","slug":"cve-2026-98471","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98471","title":{"rendered":"CVE-2026-98471 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SEV: Do cache ma"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: SEV: Do cache maintenance on the source VM during intra-host migration<\/p>\n<p>Manually perform cache maintenance on the source VM during intra-host<br \/>\nmigration to ensure no stale data is left in CPU caches after the VM is<br \/>\ndestroyed.  Because the source VM is &#8220;converted&#8221; to a non-SEV VM, KVM&#8217;s<br \/>\nmemory reclaim flows won&#8217;t trigger cache maintenance, e.g. when all guest<br \/>\nmemory is reclaimed in response to detaching from the mmu_notifier.<\/p>\n<p>Note, relying on the destination VM to do cache maintenance isn&#8217;t an option<br \/>\nas KVM doesn&#8217;t require identical guest memory configurations, i.e. the<br \/>\nsource VM may have access to memory that the destination VM does not.<br \/>\nEnforcing equivalent memory configurations is infeasible, as it would<br \/>\nrequire a *deep* comparison of memslots, e.g. to verify that not only are<br \/>\nthe memslot identical, but what the memslots point at is also identical.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: SEV: Do cache maintenance on the source VM during intra-host migration<\/p>\n<p>Manually perform cache maintenance on the source VM du<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-40943","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/40943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=40943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}