{"id":11977,"date":"2026-09-04T18:54:00","date_gmt":"2026-09-04T10:54:00","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80580"},"modified":"2026-09-04T18:54:00","modified_gmt":"2026-09-04T10:54:00","slug":"cve-2026-80580","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80580","title":{"rendered":"CVE-2026-80580 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: bound mode sys"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>fbdev: bound mode sysfs output to the sysfs buffer<\/p>\n<p>mode_string() uses snprintf() which can return a value larger than the<br \/>\nremaining buffer space. show_modes() accumulates the return value into i<br \/>\nwithout checking whether i has reached PAGE_SIZE, causing the offset to<br \/>\nadvance past the sysfs buffer if the modelist is long enough.<\/p>\n<p>Add a size parameter to mode_string() and use scnprintf() to return<br \/>\nonly the bytes actually written. Add an early return when offset<br \/>\nalready exceeds the buffer. In show_modes(), stop accumulating once<br \/>\nthe buffer is full.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>fbdev: bound mode sysfs output to the sysfs buffer<\/p>\n<p>mode_string() uses snprintf() which can return a value larger than the<br \/>\nremainin<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11977","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11977","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=11977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}