CVE-2026-89439: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-89439DEBIAN-CVE-2026-89439
Published 11-09-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-89439 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
0%100%
Low · +0.01 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-2026:11805-1

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: platform/x86: ISST: Add a NULL check for sst_inst[] To be consistent with other places, add a NULL check for failed socket loading by checking isst_common.sst_inst[].

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.01 pp

From 0.20% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

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

Ubuntu142 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)
Debian2 products
  • linux< 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ d805456c712f93ba8a012430f2a93bec133b6ff4, < f7c9370dd1d3cedb80c635528271cab1d0bcb103 | ≥ d805456c712f93ba8a012430f2a93bec133b6ff4, < 49a95fe1f64f41c2e8959e525aefdb10f23b293e | ≥ d805456c712f93ba8a012430f2a93bec133b6ff4, < c280fcd53b938b70c7dee9ce1a66b32bd6e5ebaa | ≥ d805456c712f93ba8a012430f2a93bec133b6ff4, < ef7975af15126dd70ace519da7bb33f2848b9064 | ≥ d805456c712f93ba8a012430f2a93bec133b6ff4, < 3de2776e9d7073765c10c2326c2bda5926811ea6 | 6.4

3 vendors · 145 products

References

9 links