{"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":"2026-10-31T02:47:34.217978280Z","published":"2026-09-11T19:44:12.987Z","related":["SUSE-SU-2026:24179-1","SUSE-SU-2026:24184-1","SUSE-SU-2026:24197-1","SUSE-SU-2026:24235-1","openSUSE-SU-2026:11880-1","openSUSE-SU-2026:22091-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89534.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/01500306e1d50de7ca7a2cdcdfa28ac0523eb747"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2a68aeb2de8ad0fef9c50e73a50622a35c6af1a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65f0f82f20334e76acaf29087a59af7b3b9699ed"},{"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":"2a68aeb2de8ad0fef9c50e73a50622a35c6af1a8"},{"fixed":"65f0f82f20334e76acaf29087a59af7b3b9699ed"},{"fixed":"673e358ab7c11f8cec223c6a36a793056a67facd"},{"fixed":"01500306e1d50de7ca7a2cdcdfa28ac0523eb747"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.1.191"},{"fixed":"6.2"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.6.160"},{"fixed":"6.7"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2f84d6e8b0a7093758d8da19cec111140e7b6d41"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5cd069ad1cf7fb46af31f0dbe2850868335f5272"}]}],"versions":["v6.1.191","v6.6.161","v6.6.160"],"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":"6.12.114"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.57"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89534.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}