{"id":41110,"date":"2026-10-19T00:32:11","date_gmt":"2026-10-18T16:32:11","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98638"},"modified":"2026-10-19T00:32:11","modified_gmt":"2026-10-18T16:32:11","slug":"cve-2026-98638","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98638","title":{"rendered":"CVE-2026-98638 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Validate"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: arm64: Validate the SVE vector length in pkvm_vcpu_init_sve()<\/p>\n<p>pkvm_vcpu_init_sve() clamps only the upper bound of the host-provided<br \/>\nsve_max_vl, so an invalid vector length reaches sve_state_size_from_vl()<br \/>\nand the WARN_ON() there, which is fatal at EL2. The existing<br \/>\n!sve_state_size test rejects such a length, but only after the macro has<br \/>\nrun.<\/p>\n<p>Check sve_vl_valid() before deriving the state size. A valid length<br \/>\ncannot yield a zero size, so the !sve_state_size test goes with it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: arm64: Validate the SVE vector length in pkvm_vcpu_init_sve()<\/p>\n<p>pkvm_vcpu_init_sve() clamps only the upper bound of the host-pr<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41110","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41110","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=41110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}