RHSA-2021:4056
Vulnerability from csaf_opensuse - Published: 2021-11-02 00:00 - Updated: 2026-09-20 11:16Summary
security update for kernel
Severity
Important
Notes
Title of the patch: security update for kernel
Description of the patch: This security update provides a functional equivalent of RHSA-2021:4056.
The original Red Hat(R) advisory is available from the Red Hat web site at
https://access.redhat.com/errata/RHSA-2021:4056.
Patchnames: RHSA-2021:4056
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
8.4 (High)
Affected products
Recommended
20 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Liberty Linux 8:bpftool-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-abi-stablelists-0:4.18.0-305.25.1.el8_4.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-core-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-cross-headers-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-debug-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-debug-core-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-debug-devel-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-debug-modules-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-debug-modules-extra-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-devel-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-doc-0:4.18.0-305.25.1.el8_4.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-headers-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-modules-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-modules-extra-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-tools-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-tools-libs-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:kernel-tools-libs-devel-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:perf-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:python3-perf-0:4.18.0-305.25.1.el8_4.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
8.4 (High)
Affected products
Recommended
20 products, the same list as for
CVE-2020-36385
Threats
Impact
important
7.8 (High)
Affected products
Recommended
20 products, the same list as for
CVE-2020-36385
Threats
Impact
important
References
20 references
| URL | Category |
|---|---|
| https://www.suse.com/support/security/rating/ | external |
| https://ftp.suse.com/pub/projects/security/csaf/r… | self |
| https://www.suse.com/security/cve/CVE-2020-36385/ | self |
| https://www.suse.com/security/cve/CVE-2021-0512/ | self |
| https://www.suse.com/security/cve/CVE-2021-3656/ | self |
| https://www.suse.com/security/cve/CVE-2020-36385 | external |
| https://bugzilla.suse.com/1187050 | external |
| https://bugzilla.suse.com/1187052 | external |
| https://bugzilla.suse.com/1189302 | external |
| https://bugzilla.suse.com/1196174 | external |
| https://bugzilla.suse.com/1196810 | external |
| https://bugzilla.suse.com/1196914 | external |
| https://bugzilla.suse.com/1200084 | external |
| https://bugzilla.suse.com/1201734 | external |
| https://www.suse.com/security/cve/CVE-2021-0512 | external |
| https://bugzilla.suse.com/1187595 | external |
| https://bugzilla.suse.com/1187597 | external |
| https://www.suse.com/security/cve/CVE-2021-3656 | external |
| https://bugzilla.suse.com/1189400 | external |
| https://bugzilla.suse.com/1189418 | external |
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}
],
"threats": [
{
"category": "impact",
"date": "2021-11-02T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-0512"
},
{
"cve": "CVE-2021-3656",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-3656"
}
],
"notes": [
{
"category": "general",
"text": "A flaw was found in the KVM\u0027s AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the \"virt_ext\" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.",
"title": "CVE description"
}
],
"product_status": {
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"references": [
{
"category": "external",
"summary": "CVE-2021-3656",
"url": "https://www.suse.com/security/cve/CVE-2021-3656"
},
{
"category": "external",
"summary": "SUSE Bug 1189400 for CVE-2021-3656",
"url": "https://bugzilla.suse.com/1189400"
},
{
"category": "external",
"summary": "SUSE Bug 1189418 for CVE-2021-3656",
"url": "https://bugzilla.suse.com/1189418"
}
],
"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": [
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"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"date": "2021-11-02T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-3656"
}
]
}
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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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