{"id":24607,"date":"2026-09-16T20:32:32","date_gmt":"2026-09-16T12:32:32","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89920"},"modified":"2026-09-16T20:32:32","modified_gmt":"2026-09-16T12:32:32","slug":"cve-2026-89920","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89920","title":{"rendered":"CVE-2026-89920 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix memory"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: s390: Fix memory corruption by not reinjecting CK machine checks<\/p>\n<p>Channel-subsystem damage machine checks are for the host channel<br \/>\nsubsystem. The guest channel subsystem is emulated in the userspace VMM.<br \/>\nThere is no point in forwarding such machine checks into the guest.<\/p>\n<p>This also simplifies the machine check reinjection and avoids kfree of a<br \/>\nstack variable as reported by sashiko.  There might be still machine<br \/>\nchecks that have the ck bit set with another bit (like instruction<br \/>\ndamage), mask out the CK bit in s390_backup_mcck_info(), like the CP and<br \/>\nED bits already are.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>KVM: s390: Fix memory corruption by not reinjecting CK machine checks<\/p>\n<p>Channel-subsystem damage machine checks are for the host cha<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24607","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24607","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=24607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}