SUSE-SU-2021:1251-1
Vulnerability from csaf_suse - Published: 2021-04-19 06:58 - Updated: 2026-09-20 13:53Summary
Security update for xen
Severity
Important
Notes
Title of the patch: Security update for xen
Description of the patch: This update for xen fixes the following issues:
- CVE-2021-27379: Fixed an issue where entries in the IOMMU were not being updated under certain circumstances due to improper backport of XSA-321 (XSA-366, bsc#1182431)
- CVE-2021-20257: Fixed an infinite loop in the e1000 NIC emulator (bsc#1182846)
Patchnames: SUSE-2021-1251,SUSE-OpenStack-Cloud-9-2021-1251,SUSE-OpenStack-Cloud-Crowbar-9-2021-1251,SUSE-SLE-SAP-12-SP4-2021-1251,SUSE-SLE-SERVER-12-SP4-LTSS-2021-1251
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Recommended
36 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP4:xen-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP4:xen-doc-html-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP4:xen-libs-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP4:xen-libs-32bit-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP4:xen-tools-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP4:xen-tools-domU-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4-LTSS:xen-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4:xen-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4:xen-doc-html-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4:xen-libs-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4:xen-libs-32bit-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4:xen-tools-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP4:xen-tools-domU-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud 9:xen-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud 9:xen-doc-html-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud 9:xen-libs-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud 9:xen-libs-32bit-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud 9:xen-tools-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud 9:xen-tools-domU-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud Crowbar 9:xen-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud Crowbar 9:xen-doc-html-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud Crowbar 9:xen-libs-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud Crowbar 9:xen-tools-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-0:4.11.4_16-2.51.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
low
7.9 (High)
Affected products
Recommended
36 products, the same list as for
CVE-2021-20257
Threats
Impact
important
References
14 references
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},
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"references": [
{
"category": "external",
"summary": "CVE-2021-20257",
"url": "https://www.suse.com/security/cve/CVE-2021-20257"
},
{
"category": "external",
"summary": "SUSE Bug 1182577 for CVE-2021-20257",
"url": "https://bugzilla.suse.com/1182577"
},
{
"category": "external",
"summary": "SUSE Bug 1182846 for CVE-2021-20257",
"url": "https://bugzilla.suse.com/1182846"
}
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{
"cvss_v3": {
"baseScore": 3.2,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"date": "2021-04-19T06:58:14Z",
"details": "low"
}
],
"title": "CVE-2021-20257"
},
{
"cve": "CVE-2021-27379",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-27379"
}
],
"notes": [
{
"category": "general",
"text": "An issue was discovered in Xen through 4.11.x, allowing x86 Intel HVM guest OS users to achieve unintended read/write DMA access, and possibly cause a denial of service (host OS crash) or gain privileges. This occurs because a backport missed a flush, and thus IOMMU updates were not always correct. NOTE: this issue exists because of an incomplete fix for CVE-2020-15565.",
"title": "CVE description"
}
],
"product_status": {
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"summary": "CVE-2021-27379",
"url": "https://www.suse.com/security/cve/CVE-2021-27379"
},
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{
"cvss_v3": {
"baseScore": 7.9,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "impact",
"date": "2021-04-19T06:58:14Z",
"details": "important"
}
],
"title": "CVE-2021-27379"
}
]
}
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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.
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.
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