{"id":25718,"date":"2026-09-18T04:31:47","date_gmt":"2026-09-17T20:31:47","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90309"},"modified":"2026-09-18T04:31:47","modified_gmt":"2026-09-17T20:31:47","slug":"cve-2026-90309","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90309","title":{"rendered":"CVE-2026-90309 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA\/erdma: Hold CQ r"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>RDMA\/erdma: Hold CQ references when processing EQ events<\/p>\n<p>EQ handlers look up CQs from dev-&gt;cq_xa and invoke CQ completion or<br \/>\nerror callbacks outside the xarray lock. erdma_destroy_cq() can erase the<br \/>\nCQ from the xarray and free its queue buffer and doorbell record while a<br \/>\npreviously scheduled EQ handler is still using the CQ.<\/p>\n<p>Add a CQ refcount and take a reference under the xarray lock with<br \/>\nrefcount_inc_not_zero(). Remove the CQ from the xarray before dropping<br \/>\nthe destroy-path reference, then wait for in-flight EQ users before<br \/>\nreleasing CQ resources.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>RDMA\/erdma: Hold CQ references when processing EQ events<\/p>\n<p>EQ handlers look up CQs from dev-&gt;cq_xa and invoke CQ completion or<br \/>\nerror<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25718","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25718","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=25718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}