RHSA-2022:0176
Vulnerability from csaf_redhat
Published
2022-01-19 10:03
Modified
2025-02-28 01:32
Summary
Red Hat Security Advisory: kernel-rt security and bug fix update
Notes
Topic
An update for kernel-rt 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
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* 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.
Bug Fix(es):
* kernnel-rt-debug: do not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000050e86018>] handle_userfault+0x530/0x1820 (BZ#2029422)
* kernel-rt: update RT source tree to the RHEL-8.5.z source tree (BZ#2032059)
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 kernel-rt 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: "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\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.\n\nBug Fix(es):\n\n* kernnel-rt-debug: do not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000050e86018>] handle_userfault+0x530/0x1820 (BZ#2029422)\n\n* kernel-rt: update RT source tree to the RHEL-8.5.z source tree (BZ#2032059)", 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-2022:0176", url: "https://access.redhat.com/errata/RHSA-2022:0176", }, { category: "external", summary: "https://access.redhat.com/security/updates/classification/#important", url: "https://access.redhat.com/security/updates/classification/#important", }, { category: "external", summary: "2034813", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2034813", }, { category: "external", summary: "2040358", url: 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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: [ "NFV-8.5.0.Z.MAIN:kernel-rt-0:4.18.0-348.12.2.rt7.143.el8_5.src", "NFV-8.5.0.Z.MAIN:kernel-rt-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-core-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-debug-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-debug-core-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", 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"RT-8.5.0.Z.MAIN:kernel-rt-modules-extra-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", ], }, ], threats: [ { category: "impact", details: "Important", }, ], title: "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: [ "NFV-8.5.0.Z.MAIN:kernel-rt-0:4.18.0-348.12.2.rt7.143.el8_5.src", "NFV-8.5.0.Z.MAIN:kernel-rt-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-core-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-debug-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-debug-core-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-debug-debuginfo-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-debug-devel-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-debug-kvm-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", 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"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: "https://www.willsroot.io/2022/01/cve-2022-0185.html", }, { category: "external", summary: "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", url: "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", }, ], release_date: "2022-01-18T18:41:00+00:00", remediations: [ { category: "vendor_fix", date: "2022-01-19T10:03:15+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: [ "NFV-8.5.0.Z.MAIN:kernel-rt-0:4.18.0-348.12.2.rt7.143.el8_5.src", "NFV-8.5.0.Z.MAIN:kernel-rt-0:4.18.0-348.12.2.rt7.143.el8_5.x86_64", "NFV-8.5.0.Z.MAIN:kernel-rt-core-0:4.18.0-348.12.2.rt7.143.el8_5.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.