{"id":24606,"date":"2026-09-16T20:32:32","date_gmt":"2026-09-16T12:32:32","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89919"},"modified":"2026-09-16T20:32:32","modified_gmt":"2026-09-16T12:32:32","slug":"cve-2026-89919","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89919","title":{"rendered":"CVE-2026-89919 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: keyop: use"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: s390: keyop: use mmu_lock to read gmap-&gt;asce<\/p>\n<p>Every other dat_* consumer in this file (kvm_s390_get_skeys,<br \/>\nset_skeys, get_cmma_bits, set_cmma_bits, MEM_CLR_CMMA,<br \/>\nkvm_s390_fixup_prefix, kvm_test_age_gfn, kvm_age_gfn) reads<br \/>\nkvm-&gt;arch.gmap-&gt;asce *inside* the mmu_lock read-side. keyop is the only<br \/>\noutlier.<\/p>\n<p>gmap-&gt;asce is mutated under write_lock(mmu_lock) by gmap_set_limit()<br \/>\nand keyop might use a stale asce value for walking as KVM_S390_KEYOP<br \/>\nand KVM_S390_VM_MEM_LIMIT_SIZE can run concurrently. This can result<br \/>\nin memory corruption.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: s390: keyop: use mmu_lock to read gmap-&gt;asce<\/p>\n<p>Every other dat_* consumer in this file (kvm_s390_get_skeys,<br \/>\nset_skeys, get_cmma<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24606","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24606","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=24606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}