CVE-2026-89534
Description
In 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.
How to fix
- Linux Linux2a68aeb2de8ad0fef9c50e73a50622a35c6af1a8, 65f0f82f20334e76acaf29087a59af7b3b9699ed, 673e358ab7c11f8cec223c6a36a793056a67facd, 01500306e1d50de7ca7a2cdcdfa28ac0523eb747, 6.2, 6.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | d1b586e75ec619dde1af47e21a41a6b1b51874c2 ≤ v < 2a68aeb2de8ad0fef9c50e73a50622a35c6af1a8, d1b586e75ec619dde1af47e21a41a6b1b51874c2 ≤ v < 65f0f82f20334e76acaf29087a59af7b3b9699ed, d1b586e75ec619dde1af47e21a41a6b1b51874c2 ≤ v < 673e358ab7c11f8cec223c6a36a793056a67facd, d1b586e75ec619dde1af47e21a41a6b1b51874c2 ≤ v < 01500306e1d50de7ca7a2cdcdfa28ac0523eb747, 2f84d6e8b0a7093758d8da19cec111140e7b6d41, 5cd069ad1cf7fb46af31f0dbe2850868335f5272, 6.1.191 ≤ v < 6.2, 6.6.160 ≤ v < 6.7, 6.11 | 2a68aeb2de8ad0fef9c50e73a50622a35c6af1a8, 65f0f82f20334e76acaf29087a59af7b3b9699ed, 673e358ab7c11f8cec223c6a36a793056a67facd, 01500306e1d50de7ca7a2cdcdfa28ac0523eb747, 6.2, 6.7 |
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