{"id":21427,"date":"2026-09-12T04:31:10","date_gmt":"2026-09-11T20:31:10","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89505"},"modified":"2026-09-12T04:31:10","modified_gmt":"2026-09-11T20:31:10","slug":"cve-2026-89505","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89505","title":{"rendered":"CVE-2026-89505 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA\/uverbs: Guard le"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>RDMA\/uverbs: Guard legacy bundles without method_elm<\/p>\n<p>The legacy write() path dispatches through a uverbs_api_write_method, but<br \/>\nthe uverbs_attr_bundle passed to provider code does not have an ioctl<br \/>\nmethod element. If malformed provider input causes the common uverbs<br \/>\nvalidation code to emit an error message, uverbs_get_handler_fn()<br \/>\ndereferences the uninitialized method_elm pointer.<\/p>\n<p>Initialize method_elm explicitly for legacy bundles and make<br \/>\nuverbs_get_handler_fn() return NULL when no ioctl method is present. The<br \/>\nlegacy dispatcher continues to use its local write method, while the ioctl<br \/>\npath continues to use the registered ioctl handler.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>RDMA\/uverbs: Guard legacy bundles without method_elm<\/p>\n<p>The legacy write() path dispatches through a uverbs_api_write_method, but<br \/>\nthe<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21427","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21427","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=21427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}