{"id":24494,"date":"2026-09-16T20:32:23","date_gmt":"2026-09-16T12:32:23","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89807"},"modified":"2026-09-16T20:32:23","modified_gmt":"2026-09-16T12:32:23","slug":"cve-2026-89807","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89807","title":{"rendered":"CVE-2026-89807 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ndrm\/amdkfd: guard aga"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdkfd: guard against NULL restore_mqd in CRIU queue restore<\/p>\n<p>Both create_queue_cpsch() and create_queue_nocpsch() unconditionally<br \/>\ncall mqd_mgr-&gt;restore_mqd() when a CRIU restore is in progress<br \/>\n(qd != NULL), with no NULL guard. On any system where restore_mqd is<br \/>\nnot implemented for the given queue type, a user holding<br \/>\nCAP_CHECKPOINT_RESTORE can trigger a kernel NULL pointer dereference<br \/>\nand panic the machine by issuing KFD_IOC_CRIU_OP_RESTORE with a<br \/>\ncrafted queue restore object. Note that checkpoint_mqd is likewise<br \/>\nunimplemented on GFX12, so no legitimate CRIU image can reach this<br \/>\npath \u2014 only a hand-crafted restore payload.<\/p>\n<p>Add a NULL guard for restore_mqd immediately after mqd_mgr is<br \/>\nresolved, unwinding via the existing error labels and returning<br \/>\n-EOPNOTSUPP if the callback is not implemented. This mirrors the<br \/>\nexisting checkpoint_mqd guard in checkpoint_mqd().<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdkfd: guard against NULL restore_mqd in CRIU queue restore<\/p>\n<p>Both create_queue_cpsch() and create_queue_nocpsch() unconditiona<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24494","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24494","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=24494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}