{"id":21457,"date":"2026-09-12T04:31:12","date_gmt":"2026-09-11T20:31:12","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89535"},"modified":"2026-09-12T04:31:12","modified_gmt":"2026-09-11T20:31:12","slug":"cve-2026-89535","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89535","title":{"rendered":"CVE-2026-89535 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reorder rpcr"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>svcrdma: Reorder rpcrdma_rn_unregister before rdma_destroy_id<\/p>\n<p>svc_rdma_free() caches rdma-&gt;sc_cm_id-&gt;device before teardown,<br \/>\nthen calls rdma_destroy_id(sc_cm_id) which frees the cm_id.<br \/>\nrpcrdma_rn_unregister() follows, but between those two calls<br \/>\nthe transport&#8217;s sc_rn entry is still installed in the device&#8217;s<br \/>\nrd_xa. A concurrent ib_unregister_device walk can dispatch<br \/>\nsvc_rdma_xprt_done() against the now-freed sc_cm_id.<\/p>\n<p>Move rpcrdma_rn_unregister() before rdma_destroy_id() so the<br \/>\ntransport&#8217;s notification entry is removed from the xarray before<br \/>\nthe cm_id it references is destroyed.<\/p>\n<p>Also guard the sc_cm_id dereference with a NULL check: the<br \/>\nfollowing patches introduce paths that reach svc_rdma_free()<br \/>\nwith sc_cm_id == NULL (listener create failure, ADDR_CHANGE<br \/>\nreplacement failure).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>svcrdma: Reorder rpcrdma_rn_unregister before rdma_destroy_id<\/p>\n<p>svc_rdma_free() caches rdma-&gt;sc_cm_id-&gt;device before teardown,<br \/>\nthen <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21457","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21457","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=21457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}