{"id":11959,"date":"2026-09-04T18:53:59","date_gmt":"2026-09-04T10:53:59","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80554"},"modified":"2026-09-04T18:53:59","modified_gmt":"2026-09-04T10:53:59","slug":"cve-2026-80554","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80554","title":{"rendered":"CVE-2026-80554 [CRITICAL] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ns390\/vfio_ccw: Limit"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>s390\/vfio_ccw: Limit the number of channel program segments<\/p>\n<p>The processing of channel programs, and the CCWs within them, is done<br \/>\nrecursively. As such, there is an arbitrary (but not architectural)<br \/>\nlimit to the number of CCWs that can exist in a single channel program.<\/p>\n<p>The vfio-ccw logic breaks these channel programs into segments whenever<br \/>\nit encounters a Transfer-In-Channel (TIC) CCW, and the combined number<br \/>\nof segments count towards the global limit. Impose an equivalent limit<br \/>\nto the number of segments until such logic can be made non-recursive.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>s390\/vfio_ccw: Limit the number of channel program segments<\/p>\n<p>The processing of channel programs, and the CCWs within them, is done<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11959","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11959","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=11959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}