{"id":24505,"date":"2026-09-16T20:32:24","date_gmt":"2026-09-16T12:32:24","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89818"},"modified":"2026-09-16T20:32:24","modified_gmt":"2026-09-16T12:32:24","slug":"cve-2026-89818","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89818","title":{"rendered":"CVE-2026-89818 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ndrm\/amdgpu\/vcn: fix i"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdgpu\/vcn: fix integer overflow in dec_msg buffer count check<\/p>\n<p>If the supplied msg[2] (num_buffers) is 0x3FFFFFFF, the expression<br \/>\n6 + num_buffers * 4 wraps to 2 and the bounds check passes, letting<br \/>\nthe parser loop far past the end of the message BO. Triggering it<br \/>\nadditionally requires a ~4GiB mapping so that msg[1] survives the<br \/>\nearlier &#8220;header does not fit in BO&#8221; check.<\/p>\n<p>Rewrite the test in division form, which is overflow-free by<br \/>\nconstruction. Also update the message to reflect that msg is invalid.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdgpu\/vcn: fix integer overflow in dec_msg buffer count check<\/p>\n<p>If the supplied msg[2] (num_buffers) is 0x3FFFFFFF, the express<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24505","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24505","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=24505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}