8.8

CVE-2026-89534: linux

CVSS: 8.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-89534DEBIAN-CVE-2026-89534
Published 11-09-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-89534 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 29% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.36%
0%100%
Low · +0.15 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 6
OPENSUSE-SU-2026:11880-1OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24184-1SUSE-SU-2026:24197-1SUSE-SU-2026:24235-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

+0.15 pp

From 0.22% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu120 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 7.2.6-1
Linux1 product
  • linux≥ d1b586e75ec619dde1af47e21a41a6b1b51874c2, < 2a68aeb2de8ad0fef9c50e73a50622a35c6af1a8 | ≥ d1b586e75ec619dde1af47e21a41a6b1b51874c2, < 65f0f82f20334e76acaf29087a59af7b3b9699ed | ≥ d1b586e75ec619dde1af47e21a41a6b1b51874c2, < 673e358ab7c11f8cec223c6a36a793056a67facd | ≥ d1b586e75ec619dde1af47e21a41a6b1b51874c2, < 01500306e1d50de7ca7a2cdcdfa28ac0523eb747 | 5cd069ad1cf7fb46af31f0dbe2850868335f5272 | ≥ 6.6.160, < 6.7 | 6.11

3 vendors · 122 products

References

8 links