Linux Kernel RDMA subsystem Vulnerability Rated 8.8 CVSS

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-89534

Key Details

CVE	CVE-2026-89534
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-15
CVSS Vector	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is adjacent; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Exploitation prediction (EPSS)	0.34% probability of exploitation in the next 30 days (26% percentile) -- FIRST.org's EPSS model.

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89534
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89534

Source

Reference

NVD

CVE