8.4

CVE-2026-89452: linux

CVSS: 8.4v3.1HighReceived
AliasesUBUNTU-CVE-2026-89452DEBIAN-CVE-2026-89452
Published 11-09-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-89452 is a high (CVSS 8.4) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 8.7% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.20%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:11880-1

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: iommu/msm: Unwind probe state on registration failure msm_iommu_probe() adds its devm-managed IOMMU object to qcom_iommu_devices before adding the IOMMU sysfs device and registering it with the IOMMU core. If iommu_device_sysfs_add() fails, probe returns with the object still on qcom_iommu_devices. The driver core then releases the devm allocation, leaving a dangling list entry that later list walks may dereference. If iommu_device_register() fails, the same dangling list entry remains and the sysfs device is left registered as well. Unwind the sysfs device and global list entry in reverse setup order on the corresponding failure paths.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

+0.02 pp

From 0.18% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.20%

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

Ubuntu168 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) | < 6.12.113-1 | < 7.2.6-1
Linux1 product
  • linux≥ 42df43b36163ed7d0ab13992e411093252903273, < 6a1ae472113762f794682229a0f233f1ee0f69a4 | ≥ 42df43b36163ed7d0ab13992e411093252903273, < 51e37f9179387b6e3fa64a3d3b4fece1a38b3a02 | ≥ 42df43b36163ed7d0ab13992e411093252903273, < f532401be9312ecd166f616bb74a65b0b4c150fa | ≥ 42df43b36163ed7d0ab13992e411093252903273, < 7f7074a886c4a93e3d12076ce60a510a1ebe400c | ≥ 42df43b36163ed7d0ab13992e411093252903273, < 535a200220ca2c83bc8bf54bd2cbe045d6ee70c4 | 4.11

3 vendors · 170 products

References

9 links