rhsa-2020_3545
Vulnerability from csaf_redhat
Published
2020-08-25 13:17
Modified
2024-09-13 22:08
Summary
Red Hat Security Advisory: kernel-alt security and bug fix update
Notes
Topic
An update for kernel-alt is now available for Red Hat Enterprise Linux 7.
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-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c (CVE-2019-19046)
* kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned. (CVE-2020-10769)
* kernel: sync of excessive duration via an XFS v5 image with crafted metadata (CVE-2020-12655)
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):
* list corruption in iscsi_queuecommand (BZ#1839622)
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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"text": "The kernel-alt packages provide the Linux kernel version 4.x.\n\nSecurity Fix(es):\n\n* kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c (CVE-2019-19046)\n\n* kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned. (CVE-2020-10769)\n\n* kernel: sync of excessive duration via an XFS v5 image with crafted metadata (CVE-2020-12655)\n\nFor 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.\n\nBug Fix(es):\n\n* list corruption in iscsi_queuecommand (BZ#1839622)",
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"text": "A memory leak problem was found in __ipmi_bmc_register in drivers/char/ipmi/ipmi_msghandler.c in Intelligent Platform Management Interface (IPMI) which is used for incoming and outgoing message routing purpose. This flaw may allow an attacker with minimal privilege to cause a denial of service by triggering ida_simple_get() failure.",
"title": "Vulnerability description"
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"text": "kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"integrityImpact": "NONE",
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"scope": "UNCHANGED",
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"title": "kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c"
},
{
"cve": "CVE-2020-10769",
"cwe": {
"id": "CWE-119",
"name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
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"discovery_date": "2019-05-11T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1708775"
}
],
"notes": [
{
"category": "description",
"text": "A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm\u0027s module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allows a local attacker with user privileges to cause a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned.",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2020-10769"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-10769",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-10769"
}
],
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"title": "kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned."
},
{
"cve": "CVE-2020-12655",
"cwe": {
"id": "CWE-835",
"name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
},
"discovery_date": "2020-05-05T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1832543"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was discovered in the XFS source in the Linux kernel. This flaw allows an attacker with the ability to mount an XFS filesystem, to trigger a denial of service while attempting to sync a file located on an XFS v5 image with crafted metadata.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: sync of excessive duration via an XFS v5 image with crafted metadata",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue is rated as having Low impact because of the preconditions needed to trigger it (administrative account or physical access).",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-12655"
},
{
"category": "external",
"summary": "RHBZ#1832543",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1832543"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-12655",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-12655"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-12655",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12655"
}
],
"release_date": "2020-03-02T00:00:00+00:00",
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"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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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2020:3545"
},
{
"category": "workaround",
"details": "This flaw requires an attacker being able to have the system mount a crafted filesystem.\n\nIf the xfs filesystem is not in use, the \u0027xfs\u0027 kernel module can be blacklisted and the module\nwill not be loaded when the filesystem is mounted, mounting will fail.\n\nHowever, if this filesystem is in use, this workaround will not be suitable.\n\nTo find out how to blacklist the \"xfs\" kernel module please see https://access.redhat.com/solutions/41278 or contact Red hat Global Support services",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "kernel: sync of excessive duration via an XFS v5 image with crafted metadata"
}
]
}
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