SUSE-SU-2026:2981-1
Vulnerability from csaf_suse - Published: 2026-07-14 13:13 - Updated: 2026-07-14 13:13Summary
Security update for ucode-intel
Severity
Moderate
Notes
Title of the patch: Security update for ucode-intel
Description of the patch: This update for ucode-intel fixes the following issue:
- CVE-2025-35979: data leaks fixed in 20260512 release (bsc#1265189).
Changes for ucode-intel:
- Intel CPU Microcode was updated to the 20260512 release (bsc#1265189).
**New Platforms**
| Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products
|:---------------|:---------|:------------|:---------|:---------|:---------
| PTL 404 | A1 | 06-cc-03/90 | | 0000011b | Intel Core Ultra Processor (Series 3)
| PTL-H 484/12Xe | A0/B0 | 06-cc-02/90 | | 0000011b | Intel Core Ultra Processor (Series 3)
**Updated Platforms**
| Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products
|:---------------|:---------|:------------|:---------|:---------|:---------
| ARL-H | A1 | 06-c5-02/82 | 0000011b | 00000121 | Core Ultra Processor (Series 2)
| ARL-S/HX (8P) | B0 | 06-c6-02/82 | 0000011b | 00000121 | Core Ultra Processor (Series 2)
| EMR-SP | A1 | 06-cf-02/87 | 210002d3 | 210002e0 | Xeon Scalable Gen5
| GNR-AP/SP | Bx/Hx/Lx | 06-ad-01/95 | 01000405 | 01000423 | Xeon 6900/6700/6500 Series Processors with P-Cores
| GNR-D | B0/B1 | 06-ae-01/97 | 01000303 | 01000307 | Xeon 6700P-B/6500P-B Series SoC with P-Cores
| GNR-SP R1S | Bx/Hx/Lx | 06-ad-01/20 | 0a000133 | 0a000142 | Xeon 6700/6500-Series Processors with P-Cores
| LNL | B0 | 06-bd-01/80 | 00000125 | 00000126 | Core Ultra 200 V Series Processor
| SPR-SP | E4/S2 | 06-8f-07/87 | 2b000661 | 2b000670 | Xeon Scalable Gen4
| SPR-SP | E5/S3 | 06-8f-08/87 | 2b000661 | 2b000670 | Xeon Scalable Gen4
| SRF-AP/SP | C0 | 06-af-03/01 | 03000382 | 030003a3 | Xeon 6900/6700-Series Processors with E-Cores
Patchnames: SUSE-2026-2981,SUSE-SLE-SERVER-12-SP5-LTSS-2026-2981,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2981
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
4.7 (Medium)
Affected products
Recommended
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP5-LTSS:ucode-intel-20260512-161.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP5:ucode-intel-20260512-161.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:ucode-intel-20260512-161.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
moderate
References
8 references
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"text": "This update for ucode-intel fixes the following issue:\n\n- CVE-2025-35979: data leaks fixed in 20260512 release (bsc#1265189).\n\nChanges for ucode-intel:\n\n- Intel CPU Microcode was updated to the 20260512 release (bsc#1265189).\n \n **New Platforms**\n\n | Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products\n |:---------------|:---------|:------------|:---------|:---------|:---------\n | PTL 404 | A1 | 06-cc-03/90 | | 0000011b | Intel Core Ultra Processor (Series 3)\n | PTL-H 484/12Xe | A0/B0 | 06-cc-02/90 | | 0000011b | Intel Core Ultra Processor (Series 3)\n\n **Updated Platforms**\n\n | Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products\n |:---------------|:---------|:------------|:---------|:---------|:---------\n | ARL-H | A1 | 06-c5-02/82 | 0000011b | 00000121 | Core Ultra Processor (Series 2)\n | ARL-S/HX (8P) | B0 | 06-c6-02/82 | 0000011b | 00000121 | Core Ultra Processor (Series 2)\n | EMR-SP | A1 | 06-cf-02/87 | 210002d3 | 210002e0 | Xeon Scalable Gen5\n | GNR-AP/SP | Bx/Hx/Lx | 06-ad-01/95 | 01000405 | 01000423 | Xeon 6900/6700/6500 Series Processors with P-Cores\n | GNR-D | B0/B1 | 06-ae-01/97 | 01000303 | 01000307 | Xeon 6700P-B/6500P-B Series SoC with P-Cores\n | GNR-SP R1S | Bx/Hx/Lx | 06-ad-01/20 | 0a000133 | 0a000142 | Xeon 6700/6500-Series Processors with P-Cores\n | LNL | B0 | 06-bd-01/80 | 00000125 | 00000126 | Core Ultra 200 V Series Processor\n | SPR-SP | E4/S2 | 06-8f-07/87 | 2b000661 | 2b000670 | Xeon Scalable Gen4\n | SPR-SP | E5/S3 | 06-8f-08/87 | 2b000661 | 2b000670 | Xeon Scalable Gen4\n | SRF-AP/SP | C0 | 06-af-03/01 | 03000382 | 030003a3 | Xeon 6900/6700-Series Processors with E-Cores \n",
"title": "Description of the patch"
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"text": "SUSE-2026-2981,SUSE-SLE-SERVER-12-SP5-LTSS-2026-2981,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2981",
"title": "Patchnames"
},
{
"category": "legal_disclaimer",
"text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
"title": "Terms of use"
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"publisher": {
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"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20262981-1/"
},
{
"category": "self",
"summary": "E-Mail link for SUSE-SU-2026:2981-1",
"url": "https://lists.suse.com/pipermail/sle-updates/2026-July/048248.html"
},
{
"category": "self",
"summary": "SUSE Bug 1265189",
"url": "https://bugzilla.suse.com/1265189"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2025-35979 page",
"url": "https://www.suse.com/security/cve/CVE-2025-35979/"
}
],
"title": "Security update for ucode-intel",
"tracking": {
"current_release_date": "2026-07-14T13:13:40Z",
"generator": {
"date": "2026-07-14T13:13:40Z",
"engine": {
"name": "cve-database.git:bin/generate-csaf.pl",
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"id": "SUSE-SU-2026:2981-1",
"initial_release_date": "2026-07-14T13:13:40Z",
"revision_history": [
{
"date": "2026-07-14T13:13:40Z",
"number": "1",
"summary": "Current version"
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"status": "final",
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"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "ucode-intel-20260512-161.1.i586",
"product": {
"name": "ucode-intel-20260512-161.1.i586",
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"product": {
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"product_id": "SUSE Linux Enterprise Server 12 SP5-LTSS",
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"product": {
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{
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"product": {
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"relates_to_product_reference": "SUSE Linux Enterprise Server 12 SP5-LTSS"
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{
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{
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},
"vulnerabilities": [
{
"cve": "CVE-2025-35979",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2025-35979"
}
],
"notes": [
{
"category": "general",
"text": "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.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Linux Enterprise Server 12 SP5-LTSS:ucode-intel-20260512-161.1.x86_64",
"SUSE Linux Enterprise Server 12 SP5:ucode-intel-20260512-161.1.x86_64",
"SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:ucode-intel-20260512-161.1.x86_64"
]
},
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"summary": "CVE-2025-35979",
"url": "https://www.suse.com/security/cve/CVE-2025-35979"
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{
"category": "external",
"summary": "SUSE Bug 1265189 for CVE-2025-35979",
"url": "https://bugzilla.suse.com/1265189"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Linux Enterprise Server 12 SP5-LTSS:ucode-intel-20260512-161.1.x86_64",
"SUSE Linux Enterprise Server 12 SP5:ucode-intel-20260512-161.1.x86_64",
"SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:ucode-intel-20260512-161.1.x86_64"
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],
"scores": [
{
"cvss_v3": {
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
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"SUSE Linux Enterprise Server 12 SP5:ucode-intel-20260512-161.1.x86_64",
"SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:ucode-intel-20260512-161.1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2026-07-14T13:13:40Z",
"details": "moderate"
}
],
"title": "CVE-2025-35979"
}
]
}
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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.
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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.
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