{"id":"CVE-2026-89534","summary":"svcrdma: Clear sc_cm_id when ADDR_CHANGE replacement fails","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Clear sc_cm_id when ADDR_CHANGE replacement fails\n\nWhen svc_rdma_listen_handler() handles RDMA_CM_EVENT_ADDR_CHANGE,\nit creates a replacement listener cm_id and returns 1, telling\nthe CM core to destroy the old one. If the replacement allocation\nfails, sc_cm_id still points at the old cm_id that the CM core is\nabout to destroy. Any subsequent dereference of sc_cm_id --\nsuch as svc_rdma_detach()'s rdma_disconnect() call -- is a\nuse-after-free.\n\nNULL sc_cm_id on the failure path and guard svc_rdma_detach()'s\nrdma_disconnect() call against NULL so that the listener can\nbe torn down safely when the server shuts down.","modified":"2026-09-15T03:30:33.707075940Z","published":"2026-09-11T19:44:12.987Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89534.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/01500306e1d50de7ca7a2cdcdfa28ac0523eb747"},{"type":"WEB","url":"https://git.kernel.org/stable/c/673e358ab7c11f8cec223c6a36a793056a67facd"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89534.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89534"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d1b586e75ec619dde1af47e21a41a6b1b51874c2"},{"fixed":"673e358ab7c11f8cec223c6a36a793056a67facd"},{"fixed":"01500306e1d50de7ca7a2cdcdfa28ac0523eb747"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89534.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.11.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89534.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}