{"id":5325,"date":"2026-09-04T18:47:45","date_gmt":"2026-09-04T10:47:45","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68103"},"modified":"2026-09-04T18:47:45","modified_gmt":"2026-09-04T10:47:45","slug":"cve-2026-68103","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68103","title":{"rendered":"CVE-2026-68103 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ndrm\/amdgpu: reject ma"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdgpu: reject mapping a reserved doorbell to a new queue<\/p>\n<p>When creating an user-queue, the user space<br \/>\nprovides a doorbell BO handle and an offset within<br \/>\nthe bo to obtain a doorbell.<\/p>\n<p>However current implementation using xa_store_irq()<br \/>\nto store a doorbell, which allows a later queue created<br \/>\nwith the same BO and offset parameters to overwrite an<br \/>\nexisting queue and doorbell mapping.<\/p>\n<p>This can cause problems like misrouting fence IRQ<br \/>\nprocessing to a wrong queue, and mislead the cleanup<br \/>\nprocess of one queue erasing the mapping of another queue.<\/p>\n<p>This commit fixes this issue by replacing xa_store_irq with<br \/>\nxa_insert_irq, which rejects mapping a reserved<br \/>\ndoorbell to a newly created queue<\/p>\n<p>(cherry picked from commit 6244eae22966350db52faf9c1369d3b2ffc5de4e)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdgpu: reject mapping a reserved doorbell to a new queue<\/p>\n<p>When creating an user-queue, the user space<br \/>\nprovides a doorbell BO h<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5325","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5325","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=5325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}