{"id":15004,"date":"2026-09-04T19:02:21","date_gmt":"2026-09-04T11:02:21","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-64004"},"modified":"2026-09-04T19:02:21","modified_gmt":"2026-09-04T11:02:21","slug":"cve-2026-64004","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-64004","title":{"rendered":"CVE-2026-64004 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnet\/iucv: fix locking"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net\/iucv: fix locking in .getsockopt<\/p>\n<p>Mirror iucv_sock_setsockopt() and wrap the whole switch in<br \/>\nlock_sock()\/release_sock(). The pre-existing SO_MSGLIMIT-only lock<br \/>\nbecomes redundant and is removed.<\/p>\n<p>Any AF_IUCV HIPER user can potentially crash the kernel by racing<br \/>\nrecvmsg() with getsockopt(SO_MSGSIZE): the SO_MSGSIZE arm dereferences<br \/>\niucv-&gt;hs_dev-&gt;mtu after iucv_sock_close() (called from the racing<br \/>\nrecvmsg()) has set hs_dev to NULL, producing a NULL pointer dereference<br \/>\noops.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net\/iucv: fix locking in .getsockopt<\/p>\n<p>Mirror iucv_sock_setsockopt() and wrap the whole switch in<br \/>\nlock_sock()\/release_sock(). The pr<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15004","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15004","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=15004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}