rhsa-2021_0848
Vulnerability from csaf_redhat
Published
2021-03-16 09:28
Modified
2024-09-13 22:13
Summary
Red Hat Security Advisory: kernel security update
Notes
Topic
An update for kernel is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact of Moderate. 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 packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: performance counters race condition use-after-free (CVE-2020-14351)
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.
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.
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2021:0848"
},
{
"category": "workaround",
"details": "While there is no way to disable the perf subsystem on Linux systems, reducing or removing users access to the perf events can effectively mitigate this flaw. Upstream kernel documentation has been written regarding this mechanism: https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: performance counters race condition use-after-free"
}
]
}
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