{"id":24493,"date":"2026-09-16T20:32:23","date_gmt":"2026-09-16T12:32:23","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89806"},"modified":"2026-09-16T20:32:23","modified_gmt":"2026-09-16T12:32:23","slug":"cve-2026-89806","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89806","title":{"rendered":"CVE-2026-89806 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ndrm\/sysfb: ofdrm: Fix"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/sysfb: ofdrm: Fix integer overflow in fb_size calculation<\/p>\n<p>The framebuffer size calculation `fb_size = linebytes * height` can<br \/>\noverflow when both values are large (e.g., 46341 * 46341 &gt; INT_MAX).<br \/>\nSince linebytes and height are both int types, the multiplication is<br \/>\nperformed as int * int, which results in undefined behavior on overflow.<\/p>\n<p>Use check_mul_overflow() to detect and prevent this overflow, consistent<br \/>\nwith the approach used in simpledrm.c and corebootdrm.c.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/sysfb: ofdrm: Fix integer overflow in fb_size calculation<\/p>\n<p>The framebuffer size calculation `fb_size = linebytes * height` can<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24493","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24493","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=24493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}