{"id":21449,"date":"2026-09-12T04:31:12","date_gmt":"2026-09-11T20:31:12","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89527"},"modified":"2026-09-12T04:31:12","modified_gmt":"2026-09-11T20:31:12","slug":"cve-2026-89527","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89527","title":{"rendered":"CVE-2026-89527 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Use svc_xprt"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>svcrdma: Use svc_xprt_put to free listener on create failure<\/p>\n<p>svc_rdma_create() calls kfree(cma_xprt) when<br \/>\nsvc_rdma_create_listen_id() fails. svc_xprt_init() has already<br \/>\nacquired a net namespace reference via get_net_track(); kfree<br \/>\nbypasses svc_xprt_free() which releases it.<\/p>\n<p>Replace the kfree() with svc_xprt_put() so the kref_init birth<br \/>\nreference drops to zero and svc_xprt_free() dispatches<br \/>\nsvc_rdma_free() to clean up properly. sc_cm_id is still NULL<br \/>\nat that point; the preceding patch added the necessary NULL<br \/>\nguard in svc_rdma_free().<\/p>\n<p>svc_xprt_free() also drops the module reference via<br \/>\nmodule_put(), but the caller _svc_xprt_create() does the same<br \/>\non xpo_create failure, double-putting the single<br \/>\ntry_module_get() it acquired. Take a compensating<br \/>\n__module_get() before the svc_xprt_put() to keep the count<br \/>\nbalanced, matching the convention in svc_rdma_accept()&#8217;s error<br \/>\npath.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>svcrdma: Use svc_xprt_put to free listener on create failure<\/p>\n<p>svc_rdma_create() calls kfree(cma_xprt) when<br \/>\nsvc_rdma_create_listen_i<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21449","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21449","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=21449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}