RHSA-2022:0231
Vulnerability from csaf_redhat
Published
2022-01-24 09:50
Modified
2025-02-28 01:31
Summary
Red Hat Security Advisory: kpatch-patch security update
Notes
Topic
An update is now available for Red Hat Enterprise Linux 8.4 Extended 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
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: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)
* kernel: fs_context: heap overflow in legacy parameter handling (CVE-2022-0185)
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 is now available for Red Hat Enterprise Linux 8.4 Extended Update Support.\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: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)\n\n* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)\n\n* kernel: fs_context: heap overflow in legacy parameter handling (CVE-2022-0185)\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-2022:0231", url: "https://access.redhat.com/errata/RHSA-2022:0231", }, { category: "external", summary: "https://access.redhat.com/security/updates/classification/#important", url: "https://access.redhat.com/security/updates/classification/#important", }, { category: "external", summary: "2034514", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2034514", }, { category: "external", summary: "2034813", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2034813", }, { category: "external", summary: "2040358", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2040358", }, { category: "self", summary: "Canonical URL", url: "https://security.access.redhat.com/data/csaf/v2/advisories/2022/rhsa-2022_0231.json", }, ], title: "Red Hat Security Advisory: kpatch-patch security update", tracking: { current_release_date: "2025-02-28T01:31:43+00:00", generator: { date: "2025-02-28T01:31:43+00:00", engine: { name: "Red Hat SDEngine", version: "4.3.1", }, }, id: "RHSA-2022:0231", initial_release_date: "2022-01-24T09:50:13+00:00", revision_history: [ { date: "2022-01-24T09:50:13+00:00", number: "1", summary: "Initial version", }, { date: "2022-01-24T09:50:13+00:00", number: "2", summary: "Last updated version", }, { date: "2025-02-28T01:31:43+00:00", number: "3", summary: "Last generated version", }, ], status: "final", version: "3", }, }, product_tree: { branches: [ { branches: [ { branches: [ { 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full_product_name: { name: "kpatch-patch-4_18_0-305_7_1-debugsource-0:1-8.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.4)", product_id: "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_7_1-debugsource-0:1-8.el8_4.ppc64le", }, product_reference: "kpatch-patch-4_18_0-305_7_1-debugsource-0:1-8.el8_4.ppc64le", relates_to_product_reference: "BaseOS-8.4.0.Z.EUS", }, { category: "default_component_of", full_product_name: { name: "kpatch-patch-4_18_0-305_7_1-debugsource-0:1-8.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.4)", product_id: "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_7_1-debugsource-0:1-8.el8_4.x86_64", }, product_reference: "kpatch-patch-4_18_0-305_7_1-debugsource-0:1-8.el8_4.x86_64", relates_to_product_reference: "BaseOS-8.4.0.Z.EUS", }, ], }, vulnerabilities: [ { cve: "CVE-2021-4154", cwe: { id: "CWE-416", name: "Use After Free", }, discovery_date: "2021-12-17T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2034514", }, ], notes: [ { category: "description", text: "A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.", title: "Vulnerability description", }, { category: "summary", text: "kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout", title: "Vulnerability summary", }, { 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-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.src", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debuginfo-0:1-10.el8.ppc64le", 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"BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_7_1-debugsource-0:1-8.el8_4.x86_64", ], }, ], threats: [ { category: "impact", details: "Important", }, ], title: "kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout", }, { acknowledgments: [ { names: [ "Kirill Tkhai", ], organization: "Virtuozzo Kernel team", }, ], cve: "CVE-2021-4155", cwe: { id: "CWE-131", name: "Incorrect Calculation of Buffer Size", }, discovery_date: "2021-12-18T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2034813", }, ], notes: [ { category: "description", text: "A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.", title: "Vulnerability description", }, { category: "summary", text: "kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL", title: "Vulnerability summary", }, { 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-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.src", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debuginfo-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debuginfo-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debugsource-0:1-10.el8.ppc64le", 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"https://access.redhat.com/security/cve/CVE-2021-4155", }, { category: "external", summary: "RHBZ#2034813", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2034813", }, { category: "external", summary: "https://www.cve.org/CVERecord?id=CVE-2021-4155", url: "https://www.cve.org/CVERecord?id=CVE-2021-4155", }, { category: "external", summary: "https://nvd.nist.gov/vuln/detail/CVE-2021-4155", url: "https://nvd.nist.gov/vuln/detail/CVE-2021-4155", }, { category: "external", summary: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79", url: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79", }, ], release_date: "2022-01-10T06:36:00+00:00", remediations: [ { category: "vendor_fix", date: "2022-01-24T09:50:13+00:00", details: "For details on how to apply this update, which includes the changes described in this advisory, refer 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0)\n\t\t$alloc_type = 0x40;\t# XFS_BMAPI_PREALLOC\n}\n--- On Red Hat Enterprise Linux 6 ---\n\n--- On Red Hat Enterprise Linux 7 onwards ---\nprobe module(\"xfs\").function(\"xfs_alloc_file_space\") {\n\tif ($alloc_type == 0)\n\t\t$alloc_type = 0x8;\t# XFS_BMAPI_PREALLOC\n}\n--- On Red Hat Enterprise Linux 7 onwards ---\n\n2) Install systemtap package and its dependencies\n\n # yum install -y systemtap systemtap-runtime\n # yum install -y kernel-devel kernel-debuginfo\n\n3) Build the mitigation kernel module as root.\n\n # stap -r `uname -r` -m cve_2021_4155.ko -g CVE-2021-4155.stp -p4\n\n4) Load the mitigation module as root\n\n # staprun -L cve_2021_4155.ko\n\n\n\nWhat is SystemTap and how to use it?\nhttps://access.redhat.com/solutions/5441", product_ids: [ "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.src", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.x86_64", 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"kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL", }, { acknowledgments: [ { names: [ "William Liu", ], organization: "willsroot@protonmail.com", }, { names: [ "Jamie Hill-Daniel", ], organization: "jamie@hill-daniel.co.uk", }, { names: [ "Isaac Badipe", ], organization: "isaac.badipe@gmail.com", }, { names: [ "Alec Petridis", ], organization: "alecthechop@gmail.com", }, { names: [ "Hrvoje Mišetić", ], organization: "misetichrvoje@gmail.com", }, { names: [ "Philip Papurt", ], organization: "g@gnk.io", }, ], cve: "CVE-2022-0185", cwe: { id: "CWE-191", name: "Integer Underflow (Wrap or Wraparound)", }, discovery_date: "2022-01-13T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2040358", }, ], notes: [ { category: "description", text: "A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.", title: "Vulnerability description", }, { category: "summary", text: "kernel: fs_context: heap overflow in legacy parameter handling", title: "Vulnerability summary", }, { category: "other", text: "This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 8.4 GA onwards. Previous Red Hat Enterprise Linux versions are not affected.", 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-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.src", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debuginfo-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debuginfo-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debugsource-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debugsource-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_10_2-0:1-7.el8_4.ppc64le", 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"https://bugzilla.redhat.com/show_bug.cgi?id=2040358", }, { category: "external", summary: "https://www.cve.org/CVERecord?id=CVE-2022-0185", url: "https://www.cve.org/CVERecord?id=CVE-2022-0185", }, { category: "external", summary: "https://nvd.nist.gov/vuln/detail/CVE-2022-0185", url: "https://nvd.nist.gov/vuln/detail/CVE-2022-0185", }, { category: "external", summary: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2", url: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2", }, { category: "external", summary: "https://github.com/Crusaders-of-Rust/CVE-2022-0185", url: "https://github.com/Crusaders-of-Rust/CVE-2022-0185", }, { category: "external", summary: "https://www.openwall.com/lists/oss-security/2022/01/18/7", url: "https://www.openwall.com/lists/oss-security/2022/01/18/7", }, { category: "external", summary: "https://www.willsroot.io/2022/01/cve-2022-0185.html", url: 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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: [ "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.src", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debuginfo-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debuginfo-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debugsource-0:1-10.el8.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305-debugsource-0:1-10.el8.x86_64", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_10_2-0:1-7.el8_4.ppc64le", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_10_2-0:1-7.el8_4.src", "BaseOS-8.4.0.Z.EUS:kpatch-patch-4_18_0-305_10_2-0:1-7.el8_4.x86_64", 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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.