{"id":14967,"date":"2026-09-04T19:02:20","date_gmt":"2026-09-04T11:02:20","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-63937"},"modified":"2026-09-04T19:02:20","modified_gmt":"2026-09-04T11:02:20","slug":"cve-2026-63937","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-63937","title":{"rendered":"CVE-2026-63937 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SEV: Use READ_ON"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: SEV: Use READ_ONCE() when reading entries\/indices from PSC buffer<\/p>\n<p>Use READ_ONCE() when reading entries\/indices from the guest-accessible<br \/>\nPage State Change buffer to defend against TOCTOU bugs.<\/p>\n<p>Don&#8217;t bother with READ_ONCE()\/WRITE_ONCE() for cases where KVM is writing<br \/>\n(and not consuming the result!), as the guest isn&#8217;t supposed to touch the<br \/>\nbuffer while it&#8217;s being processed.  I.e. using READ_ONCE() is all about<br \/>\nprotecting against misbehaving guests.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: SEV: Use READ_ONCE() when reading entries\/indices from PSC buffer<\/p>\n<p>Use READ_ONCE() when reading entries\/indices from the guest<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-14967","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/14967","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=14967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}