{"id":"CVE-2026-89534","title":"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 an…","summary":"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 an…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-825"],"vendor":"Linux","product":"Linux","affected":["Linux >= d1b586e75ec619dde1af47e21a41a6b1b51874c2 < 65f0f82f20334e76acaf29087a59af7b3b9699ed","Linux >= d1b586e75ec619dde1af47e21a41a6b1b51874c2 < 673e358ab7c11f8cec223c6a36a793056a67facd","Linux >= d1b586e75ec619dde1af47e21a41a6b1b51874c2 < 01500306e1d50de7ca7a2cdcdfa28ac0523eb747","Linux 6.11"],"published":"2026-09-11","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:53.963","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89534","references":[{"url":"https://git.kernel.org/stable/c/01500306e1d50de7ca7a2cdcdfa28ac0523eb747","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/65f0f82f20334e76acaf29087a59af7b3b9699ed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/673e358ab7c11f8cec223c6a36a793056a67facd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89534.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89534"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532026"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89534"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89534"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89534.mbox"},{"url":"https://git.kernel.org/stable/c/2a68aeb2de8ad0fef9c50e73a50622a35c6af1a8"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00239,"epssPercentile":0.14839,"scores":{"nvd":8.8,"cna":8.8,"vendor":7},"ingestedAt":"2026-09-14T15:23:07.475Z","slug":"CVE-2026-89534","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89534.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":222165,"id":"CVE-2026-89534","ts":1792062151520,"field":"cvss","old":"7","new":"8.8"},{"seq":202796,"id":"CVE-2026-89534","ts":1789403722683,"field":"cvss","old":"8.8","new":"7"},{"seq":197959,"id":"CVE-2026-89534","ts":1789384321148,"field":"cvss","old":"5.9","new":"8.8"},{"seq":197958,"id":"CVE-2026-89534","ts":1789384321148,"field":"severity","old":"medium","new":"high"},{"seq":183760,"id":"CVE-2026-89534","ts":1789356677272,"field":"cvss","old":"8.8","new":"5.9"},{"seq":183759,"id":"CVE-2026-89534","ts":1789356677272,"field":"severity","old":"high","new":"medium"},{"seq":153328,"id":"CVE-2026-89534","ts":1789285350065,"field":"cvss","old":null,"new":"8.8"},{"seq":153327,"id":"CVE-2026-89534","ts":1789285350065,"field":"severity","old":"none","new":"high"},{"seq":109648,"id":"CVE-2026-89534","ts":1789183732782,"field":"cvss","old":null,"new":"5.9"},{"seq":109647,"id":"CVE-2026-89534","ts":1789183732782,"field":"severity","old":"none","new":"medium"}]}