RHSA-2019_0514
Vulnerability from csaf_redhat - Published: 2019-03-13 18:46 - Updated: 2024-11-15 03:07Summary
Red Hat Security Advisory: kernel-rt security and bug fix update
Severity
Important
Notes
Topic: An update for kernel-rt is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: Memory corruption due to incorrect socket cloning (CVE-2018-9568)
* kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks (CVE-2018-17972)
* kernel: Faulty computation of numberic bounds in the BPF verifier (CVE-2018-18445)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* kernel-rt: update to the RHEL7.6.z batch#3 source tree (BZ#1672406)
Users of kernel-rt are advised to upgrade to these updated packages, which fix this bug.
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.
A possible memory corruption due to a type confusion was found in the Linux kernel in the sk_clone_lock() function in the net/core/sock.c. The possibility of local escalation of privileges cannot be fully ruled out for a local unprivileged attacker.
7.0 (High)
Affected products
Fixed
36 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-0:3.10.0-957.10.1.rt56.921.el7.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-debug-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-debug-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-debug-devel-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-debug-kvm-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-debug-kvm-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-debuginfo-common-x86_64-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-devel-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-doc-0:3.10.0-957.10.1.rt56.921.el7.noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-kvm-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-kvm-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-trace-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-trace-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-trace-devel-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-trace-kvm-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-NFV-7.6.Z:kernel-rt-trace-kvm-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-0:3.10.0-957.10.1.rt56.921.el7.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-debug-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-debug-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-debug-devel-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-debug-kvm-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-debug-kvm-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-debuginfo-common-x86_64-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-devel-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-doc-0:3.10.0-957.10.1.rt56.921.el7.noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-kvm-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-kvm-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-trace-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-trace-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-trace-devel-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-trace-kvm-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-7.6.Z:kernel-rt-trace-kvm-debuginfo-0:3.10.0-957.10.1.rt56.921.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel. An attacker with a local account can trick the stack unwinder code to leak stack contents to userspace. The fix allows only root to inspect the kernel stack of an arbitrary task.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorAffected products
Fixed
36 products, the same list as for
CVE-2018-9568
Threats
Impact
Moderate
A security flaw was found in the Linux kernel in the adjust_scalar_min_max_vals() function in kernel/bpf/verifier.c. A faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because this function mishandles 32-bit right shifts. A local unprivileged user cannot leverage this flaw, but as a privileged user ("root") this can lead to a system panic and a denial of service or other unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.
4.7 (Medium)
Affected products
Fixed
36 products, the same list as for
CVE-2018-9568
Threats
Impact
Moderate
References
19 references
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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2018-18445"
},
{
"category": "external",
"summary": "RHBZ#1640596",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1640596"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2018-18445",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-18445"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-18445",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-18445"
}
],
"release_date": "2018-10-05T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2019-03-13T18:46:09+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\n\nThe system must be rebooted for this update to take effect.",
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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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