RHEA-2025:3114
Vulnerability from csaf_opensuse - Published: 2025-03-24 13:51 - Updated: 2026-11-07 05:03Summary
Red Hat Enhancement Advisory: microcode_ctl bug fix and enhancement update
Severity
Important
Notes
Topic: An update for microcode_ctl is now available for Red Hat Enterprise Linux 8.
Details: The microcode_ctl packages provide microcode updates for Intel and AMD processors.
Bug Fix(es) and Enhancement(s):
* [RHEL 8] Update Intel CPU microcode to the latest version (JIRA:RHEL-67344)
* microcode_ctl: Improper input validation in UEFI firmware CseVariableStorageSmm [rhel-8.10.z] (JIRA:RHEL-79195)
* microcode_ctl: Improper input validation in UEFI firmware [rhel-8.10.z] (JIRA:RHEL-79197)
* microcode_ctl: Improper input validation in UEFI firmware [rhel-8.10.z] (JIRA:RHEL-79198)
* microcode_ctl: Improper input validation in XmlCli feature for UEFI firmware [rhel-8.10.z] (JIRA:RHEL-79213)
* microcode_ctl: Improper input validation in UEFI firmware [rhel-8.10.z] (JIRA:RHEL-79216)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
An improper input validation flaw was found in UEFI firmware. Some Intel(R) processors may allow a privileged user to enable privilege escalation via local access.
7.5 (High)
Affected products
Threats
Impact
Important
An improper input validation flaw was found in UEFI firmware. Some Intel(R) processors may allow a privileged user to enable privilege escalation via local access.
8.2 (High)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Important
An improper input validation flaw was found in the XmlCli feature for UEFI firmware. Some Intel(R) processors may allow a privileged user to enable privilege escalation via local access.
7.5 (High)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Important
Improper input validation in UEFI firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.
5.3 (Medium)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Moderate
An improper input validation flaw was found in UEFI firmware. Some Intel(R) Processors may allow a privileged user to enable privilege escalation via local access.
7.5 (High)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Important
Improper input validation in UEFI firmware CseVariableStorageSmm for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
7.5 (High)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Important
Improper Finite State Machines (FSMs) in Hardware Logic for some Intel(R) Processors may allow privileged user to potentially enable denial of service via local access.
5.3 (Medium)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Moderate
Improper initialization in UEFI firmware OutOfBandXML module in some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.
5.3 (Medium)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Moderate
An improper access control vulnerability exists in the linux kernel such that in the EDECCSSA user leaf function for some Intel(R) Processors with Intel(R) SGX may allow an authenticated user to potentially enable denial of service via local access.
6.5 (Medium)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Moderate
Insufficient granularity of access control in UEFI firmware in some Intel(R) processors may allow a authenticated user to potentially enable denial of service via local access.
6.5 (Medium)
Affected products
Fixed
2 products, the same list as for
CVE-2023-34440
Threats
Impact
Moderate
References
46 references
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"category": "external",
"summary": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01213.html",
"url": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01213.html"
}
],
"release_date": "2025-02-12T21:20:12.658000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2025-03-24T13:51:59+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.src",
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHEA-2025:3114"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.src",
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.src",
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: microcode_ctl: From CVEorg collector"
},
{
"cve": "CVE-2024-39279",
"cwe": {
"id": "CWE-1220",
"name": "Insufficient Granularity of Access Control"
},
"discovery_date": "2025-02-12T22:02:09.950029+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2345381"
}
],
"notes": [
{
"category": "description",
"text": "Insufficient granularity of access control in UEFI firmware in some Intel(R) processors may allow a authenticated user to potentially enable denial of service via local access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "microcode_ctl: Insufficient granularity of access control in UEFI firmware",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Moderate impact: Red Hat Enterprise Linux systems using microcode_ctl are affected by insufficient access-control granularity in UEFI firmware on some Intel processors. An authenticated local user may exploit the issue to cause a denial of service. The Red Hat CVSS v3.1 score is 6.5 (AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H), matching the upstream v3.1 score; the upstream CVSS v4 score is also Moderate (6.8) but uses a different metric profile. Red Hat Enterprise Linux 7 and the listed RHEL 8 update streams are affected with an out-of-support resolution. RHEL 9.6 is delegated as affected, with a fix being pursued through the delegated product process. RHEL 10.0 is not affected because the vulnerable code is not present.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.src",
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2024-39279"
},
{
"category": "external",
"summary": "RHBZ#2345381",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2345381"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2024-39279",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-39279"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-39279",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39279"
},
{
"category": "external",
"summary": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01139.html",
"url": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01139.html"
}
],
"release_date": "2025-02-12T21:19:32.977000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2025-03-24T13:51:59+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.src",
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHEA-2025:3114"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.src",
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.src",
"BaseOS-8.10.0.Z.MAIN.EUS:microcode_ctl-4:20250211-1.el8_10.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "microcode_ctl: Insufficient granularity of access control in UEFI firmware"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.