rhsa-2022_5805
Vulnerability from csaf_redhat
Published
2022-08-02 08:03
Modified
2024-11-06 01:18
Summary
Red Hat Security Advisory: kernel security update
Notes
Topic
An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support.
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 packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-32250)
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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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.", "title": "Topic" }, { "category": "general", "text": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-32250)\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.", "title": "Details" }, { "category": "legal_disclaimer", "text": "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.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2022:5805", "url": "https://access.redhat.com/errata/RHSA-2022:5805" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "2092427", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2092427" }, { "category": "self", "summary": "Canonical 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"7Server-7.4.AUS:kernel-headers-0:3.10.0-693.104.1.el7.x86_64", "7Server-optional-7.4.AUS:kernel-headers-0:3.10.0-693.104.1.el7.x86_64" ] } ], "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2092427" } ], "notes": [ { "category": "description", "text": "A use-after-free vulnerability was found in the Linux kernel\u0027s Netfilter subsystem in net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege escalation issue.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root", "title": "Vulnerability summary" }, { "category": "other", "text": "The latest kernel in RHCOS is kernel-4.18.0-305.49.1.el8 which does not contain the vulnerable code and is not affected, also OCP v4.9 or earlier are not affected.", "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" } ], "product_status": { "fixed": [ "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.src", "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.x86_64", 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"https://www.cve.org/CVERecord?id=CVE-2022-32250" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-32250", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-32250" }, { "category": "external", "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd" }, { "category": "external", "summary": "https://www.openwall.com/lists/oss-security/2022/05/31/1", "url": "https://www.openwall.com/lists/oss-security/2022/05/31/1" } ], "release_date": "2022-05-31T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2022-08-02T08:03:53+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.", "product_ids": [ "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.src", "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-abi-whitelists-0:3.10.0-693.104.1.el7.noarch", "7Server-7.4.AUS:kernel-debug-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debug-debuginfo-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debug-devel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debuginfo-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debuginfo-common-x86_64-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-devel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-doc-0:3.10.0-693.104.1.el7.noarch", "7Server-7.4.AUS:kernel-tools-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-tools-debuginfo-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-tools-libs-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-tools-libs-devel-0:3.10.0-693.104.1.el7.x86_64", 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\"user.max_user_namespaces=0\" \u003e /etc/sysctl.d/userns.conf\n# sysctl -p /etc/sysctl.d/userns.conf\n\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.", "product_ids": [ "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.src", "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-abi-whitelists-0:3.10.0-693.104.1.el7.noarch", "7Server-7.4.AUS:kernel-debug-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debug-debuginfo-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debug-devel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debuginfo-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debuginfo-common-x86_64-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-devel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-doc-0:3.10.0-693.104.1.el7.noarch", "7Server-7.4.AUS:kernel-headers-0:3.10.0-693.104.1.el7.x86_64", 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"cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.src", "7Server-7.4.AUS:kernel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-abi-whitelists-0:3.10.0-693.104.1.el7.noarch", "7Server-7.4.AUS:kernel-debug-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debug-debuginfo-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debug-devel-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debuginfo-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-debuginfo-common-x86_64-0:3.10.0-693.104.1.el7.x86_64", "7Server-7.4.AUS:kernel-devel-0:3.10.0-693.104.1.el7.x86_64", 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"category": "impact", "details": "Important" } ], "title": "kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root" } ] }
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.