svcrdma: Clear sc_cm_id when ADDR_CHANGE replacement fails

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89534
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:36 UTC
Updated2026-09-11 20:19:36 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: svcrdma: Clear sc_cm_id when ADDR_CHANGE replacement fails When svc_rdma_listen_handler() handles RDMA_CM_EVENT_ADDR_CHANGE, it creates a replacement listener cm_id and returns 1, telling the CM core to destroy the old one. If the replacement allocation fails, sc_cm_id still points at the old cm_id that the CM core is about to destroy. Any subsequent dereference of sc_cm_id -- such as svc_rdma_detach()'s rdma_disconnect() call -- is a use-after-free. NULL sc_cm_id on the failure path and guard svc_rdma_detach()'s rdma_disconnect() call against NULL so that the listener can be torn down safely when the server shuts down.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d1b586e75ec619dde1af47e21a41a6b1b51874c2 673e358ab7c11f8cec223c6a36a793056a67facd git Not specified
CNA Linux Linux affected d1b586e75ec619dde1af47e21a41a6b1b51874c2 01500306e1d50de7ca7a2cdcdfa28ac0523eb747 git Not specified
CNA Linux Linux affected 6.11 Not specified
CNA Linux Linux unaffected 6.11 semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/673e358ab7c11f8cec223c6a36a793056a67facd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/01500306e1d50de7ca7a2cdcdfa28ac0523eb747 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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