OESA-2026-2459

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2459

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-2459.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-2459

Upstream

CVE-2025-35979

Published

2026-05-22T11:11:24Z

Modified

2026-08-18T01:20:00Z

Severity

6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N CVSS Calculator

Summary

microcode_ctl security update

Details

This is a tool to transform and deploy microcode update for x86 CPUs.

Security Fix(es):

Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some Intel(R) Processors within VMX non-root (guest) operation may allow an information disclosure. Unprivileged software adversary with an authenticated user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts.(CVE-2025-35979)

Database specific

{
    "severity": "Medium"
}

References

Affected packages

openEuler:22.03-LTS-SP4 / microcode_ctl

Package

Name: microcode_ctl
Purl: pkg:rpm/openEuler/microcode_ctl&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

20260512-1.oe2203sp4

Ecosystem specific

{
    "src": [
        "microcode_ctl-20260512-1.oe2203sp4.src.rpm"
    ],
    "x86_64": [
        "microcode_ctl-20260512-1.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-2459.json"