{"id":29049,"date":"2026-09-25T20:31:45","date_gmt":"2026-09-25T12:31:45","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-97617"},"modified":"2026-09-25T20:31:45","modified_gmt":"2026-09-25T12:31:45","slug":"cve-2026-97617","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-97617","title":{"rendered":"CVE-2026-97617 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Check re"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ring-buffer: Check resize_disabled before publishing the new subbuf order<\/p>\n<p>ring_buffer_subbuf_order_set() stores the new order and only then walks<br \/>\nthe CPUs, returning -EBUSY if any of them has resizing disabled. A user<br \/>\nmapped buffer has resizing disabled, and __rb_map_vma() reads<br \/>\nbuffer-&gt;subbuf_order without buffer-&gt;mutex, so an mmap of an already<br \/>\nmapped CPU racing the failing order change sizes the mapping with the<br \/>\nnew order and inserts pages past the sub-buffer into the VMA.<\/p>\n<p>Check the CPUs before storing the new order.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ring-buffer: Check resize_disabled before publishing the new subbuf order<\/p>\n<p>ring_buffer_subbuf_order_set() stores the new order and <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29049","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29049","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=29049"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29049"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29049"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}