OESA-2026-1440

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1440
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-1440.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-1440
Upstream
  • CVE-2025-31648
Published
2026-02-28T12:44:20Z
Modified
2026-02-28T13:02:37.647580Z
Summary
microcode_ctl security update
Details

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

Security Fix(es):

Improper handling of values in the microcode flow for some Intel(R) Processor Family may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts.(CVE-2025-31648)

Database specific 
{
    "severity": "Low"
}
References

Affected packages

openEuler:20.03-LTS-SP4 / microcode_ctl

Package

Name
microcode_ctl
Purl
pkg:rpm/openEuler/microcode_ctl&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20260210.1-1.oe2003sp4

Ecosystem specific 

{
    "src": [
        "microcode_ctl-20260210.1-1.oe2003sp4.src.rpm"
    ],
    "x86_64": [
        "microcode_ctl-20260210.1-1.oe2003sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1440.json"