{"id":7400,"date":"2026-09-04T18:49:32","date_gmt":"2026-09-04T10:49:32","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74436"},"modified":"2026-09-04T18:49:32","modified_gmt":"2026-09-04T10:49:32","slug":"cve-2026-74436","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74436","title":{"rendered":"CVE-2026-74436 [CRITICAL] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: serialize kern"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>rxrpc: serialize kernel accept preallocation with socket teardown<\/p>\n<p>rxrpc_kernel_charge_accept() reads rx-&gt;backlog without any<br \/>\nsocket\/backlog synchronization and passes that raw pointer into<br \/>\nrxrpc_service_prealloc_one(). A concurrent rxrpc_discard_prealloc()<br \/>\nsets rx-&gt;backlog = NULL and frees the backlog rings, so a kernel<br \/>\npreallocation worker can keep using a freed struct rxrpc_backlog<br \/>\nwhile updating *_backlog_head\/tail and array slots.<\/p>\n<p>Serialize the state check and backlog lookup with the socket lock,<br \/>\nand reject kernel preallocation once teardown has disabled<br \/>\nlistening or discarded the service backlog.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>rxrpc: serialize kernel accept preallocation with socket teardown<\/p>\n<p>rxrpc_kernel_charge_accept() reads rx-&gt;backlog without any<br \/>\nsocke<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7400","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7400","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=7400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}