rhsa-2022:0849
Vulnerability from csaf_redhat
Published
2022-03-14 10:52
Modified
2025-02-28 01:33
Summary
Red Hat Security Advisory: kpatch-patch security update
Notes
Topic
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.
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
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)
* kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)
* kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)
* kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435)
* kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)
* kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)
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.
{ document: { aggregate_severity: { namespace: "https://access.redhat.com/security/updates/classification/", text: "Important", }, category: "csaf_security_advisory", csaf_version: "2.0", distribution: { text: "Copyright © Red Hat, Inc. All rights reserved.", tlp: { label: "WHITE", url: "https://www.first.org/tlp/", }, }, lang: "en", notes: [ { category: "summary", text: "An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.\n\nRed 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.", title: "Topic", }, { category: "general", text: "This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.\n\nSecurity Fix(es):\n\n* kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)\n\n* kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)\n\n* kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)\n\n* kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435)\n\n* kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)\n\n* kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)\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-2022:0849", url: "https://access.redhat.com/errata/RHSA-2022:0849", }, { category: "external", summary: "https://access.redhat.com/security/updates/classification/#important", url: "https://access.redhat.com/security/updates/classification/#important", }, { category: "external", summary: "2031930", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2031930", }, { category: "external", summary: "2034514", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2034514", }, { category: "external", summary: "2042404", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2042404", }, { category: "external", summary: "2044809", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2044809", }, { category: "external", summary: "2048738", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2048738", }, { category: "external", summary: "2051505", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2051505", }, { category: "self", summary: "Canonical URL", url: "https://security.access.redhat.com/data/csaf/v2/advisories/2022/rhsa-2022_0849.json", }, ], title: "Red Hat Security Advisory: kpatch-patch security update", tracking: { current_release_date: "2025-02-28T01:33:40+00:00", generator: { date: "2025-02-28T01:33:40+00:00", engine: { name: "Red Hat SDEngine", version: "4.3.1", }, }, id: "RHSA-2022:0849", initial_release_date: "2022-03-14T10:52:04+00:00", revision_history: [ { date: "2022-03-14T10:52:04+00:00", number: "1", summary: "Initial version", }, { date: "2022-03-14T10:52:04+00:00", number: "2", summary: "Last updated version", }, { date: "2025-02-28T01:33:40+00:00", number: "3", summary: "Last generated version", }, ], status: "final", version: "3", }, }, product_tree: { branches: [ { branches: [ { branches: [ { category: "product_name", name: "Red Hat Enterprise Linux BaseOS (v. 8)", product: { name: "Red Hat Enterprise Linux BaseOS (v. 8)", product_id: "BaseOS-8.5.0.Z.MAIN", product_identification_helper: { cpe: "cpe:/o:redhat:enterprise_linux:8::baseos", }, }, }, ], category: "product_family", name: "Red Hat Enterprise Linux", }, { branches: [ { category: "product_version", name: "kpatch-patch-4_18_0-348-0:1-3.el8.src", product: { name: "kpatch-patch-4_18_0-348-0:1-3.el8.src", product_id: "kpatch-patch-4_18_0-348-0:1-3.el8.src", product_identification_helper: { purl: "pkg:rpm/redhat/kpatch-patch-4_18_0-348@1-3.el8?arch=src", }, }, }, { category: "product_version", name: 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In this flaw, a missing cleanup may lead to a use-after-free due to a race problem. This flaw allows a local user to crash the system or escalate their privileges on the system.\r\n\r\nA read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. 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flush", }, { cve: "CVE-2022-0435", cwe: { id: "CWE-787", name: "Out-of-bounds Write", }, discovery_date: "2022-01-31T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2048738", }, ], notes: [ { category: "description", text: "A stack overflow flaw was found in the Linux kernel’s TIPC protocol functionality in the way a user sends a packet with malicious content where the number of domain member nodes is higher than the 64 allowed. This flaw allows a remote user to crash the system or possibly escalate their privileges if they have access to the TIPC network.", title: "Vulnerability description", }, { category: "summary", text: "kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS", title: "Vulnerability summary", }, { category: "other", text: "Red Hat recommends to use TIPC Encryption to secure TIPC procotol's payload or use transport level to separate and/or secure (by both encrypting and authenticating via eg. IPSec/MACSec) the communication between nodes.", title: "Statement", }, { category: "general", text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", title: "CVSS score applicability", }, ], product_status: { fixed: [ "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.src", 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}, ], threats: [ { category: "impact", details: "Important", }, ], title: "kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS", }, { acknowledgments: [ { names: [ "Yiqi Sun", ], organization: "Nebula Lab", }, { names: [ "Kevin Wang", ], organization: "Huawei", }, ], cve: "CVE-2022-0492", cwe: { id: "CWE-862", name: "Missing Authorization", }, discovery_date: "2022-02-07T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2051505", }, ], notes: [ { category: "description", text: "A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.", title: "Vulnerability description", }, { category: "summary", text: "kernel: cgroups v1 release_agent feature may allow privilege escalation", title: "Vulnerability summary", }, { category: "other", text: "In the OpenShift Container Platform (OCP) the container escape and privilege escalation caused by the CVE-2022-0492 vulnerability are blocked by the SELinux policy enabled (by default) on the OCP cluster nodes.\n\nRed Hat Virtualization requires SELinux running in enforcing mode[1] on all hypervisors and managers, which blocks this vulnerability.\n\n1. https://access.redhat.com/solutions/499473", title: "Statement", }, { category: "general", text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the 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Hat Bugzilla ID", text: "2044809", }, ], notes: [ { category: "description", text: "A use-after-free flaw was found in the Linux kernel’s vmw_execbuf_copy_fence_user function in drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c in vmwgfx. 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This can be done by a blacklist mechanism and ensures the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278 \n~~~", product_ids: [ "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debuginfo-0:1-1.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debuginfo-0:1-1.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debugsource-0:1-1.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debugsource-0:1-1.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-0:1-2.el8_5.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debuginfo-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debuginfo-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debugsource-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debugsource-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-0:1-2.el8_5.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debuginfo-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debuginfo-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debugsource-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debugsource-0:1-2.el8_5.x86_64", ], }, ], scores: [ { cvss_v3: { attackComplexity: "HIGH", attackVector: "LOCAL", availabilityImpact: "HIGH", baseScore: 7, 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", }, products: [ "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debuginfo-0:1-1.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debuginfo-0:1-1.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debugsource-0:1-1.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_12_2-debugsource-0:1-1.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-0:1-2.el8_5.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debuginfo-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debuginfo-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debugsource-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_2_1-debugsource-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-0:1-2.el8_5.src", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debuginfo-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debuginfo-0:1-2.el8_5.x86_64", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debugsource-0:1-2.el8_5.ppc64le", "BaseOS-8.5.0.Z.MAIN:kpatch-patch-4_18_0-348_7_1-debugsource-0:1-2.el8_5.x86_64", ], }, ], threats: [ { category: "impact", details: "Important", }, ], title: "kernel: failing usercopy allows for use-after-free exploitation", }, ], }
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.