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RHSA-2023:1691: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9. 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.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.

Related CVEs:

  • CVE-2023-0386: A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.
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Issued:

2023-04-11

Updated:

2023-04-11

RHSA-2023:1691 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel-rt security and bug fix update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.

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.

Description

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: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386)

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):

  • kernel-rt: update RT source tree to the latest RHEL-9.1.z3 Batch (BZ#2182066)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

  • Red Hat Enterprise Linux for Real Time 9 x86_64
  • Red Hat Enterprise Linux for Real Time for NFV 9 x86_64

Fixes

  • BZ - 2159505 - CVE-2023-0386 kernel: FUSE filesystem low-privileged user privileges escalation

Red Hat Enterprise Linux for Real Time 9

SRPM

kernel-rt-5.14.0-162.23.1.rt21.186.el9_1.src.rpm

SHA-256: b3dc17baa7cfd5b29823a2982d5212bbd4b2869a2f455d418908645f08d2b591

x86_64

kernel-rt-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: c85a9d654b2510f2d5046d0b4a88f203bdd627248bbe3e8b9ae68f704fe75bce

kernel-rt-core-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 80c6525226812c5a41b098cc74c5724d505588cc06a19b2e70fe44bdff243764

kernel-rt-debug-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 20b2d1799c8d9132e3ff4ffa7b090f26a16521b7473d8cced91addcca304662f

kernel-rt-debug-core-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 4e6bfe16cb9207c827287b96f5d4378f8c3b5d5a8d1426b819b3bada27723b0a

kernel-rt-debug-debuginfo-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 38e7a67f9455d53604db3ce1759727ec4df0b83f9d3beeed4e0331448237b70b

kernel-rt-debug-devel-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 4c9e8d4f5d4fd54e68c93a2e6d4bae786c8ce2a95d416ae16f4a714b23300b12

kernel-rt-debug-modules-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 501d9e6a095e84fc9ca68ce611bc264caaa670765c4ce743771e4764150402f1

kernel-rt-debug-modules-extra-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: d989a92bb508fa8275d69aad54bc9ed54b1e8c3821296666c22f05a1a52667d1

kernel-rt-debuginfo-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 4c1453b0c141266b8a232c9735f6c3b1ab940a08699a35be327e1bbaa38defcd

kernel-rt-debuginfo-common-x86_64-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 5cf979018797cab9db0bdd33c7c5a11c36751da2d693f9d560f36b66c6be7ba8

kernel-rt-devel-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 055e928c68f9ca86439ec9be60157a0255b3092912839e7c0cf3aa06dc9b570d

kernel-rt-modules-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 1a6652b342892f4d9660a19623b5047ed7d50df10e8075ce32d4488883ebee3e

kernel-rt-modules-extra-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: dccd8d908c09bc58d245d4f54ce65bb8805753644dbefe17a745543d455a3c0a

Red Hat Enterprise Linux for Real Time for NFV 9

SRPM

kernel-rt-5.14.0-162.23.1.rt21.186.el9_1.src.rpm

SHA-256: b3dc17baa7cfd5b29823a2982d5212bbd4b2869a2f455d418908645f08d2b591

x86_64

kernel-rt-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: c85a9d654b2510f2d5046d0b4a88f203bdd627248bbe3e8b9ae68f704fe75bce

kernel-rt-core-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 80c6525226812c5a41b098cc74c5724d505588cc06a19b2e70fe44bdff243764

kernel-rt-debug-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 20b2d1799c8d9132e3ff4ffa7b090f26a16521b7473d8cced91addcca304662f

kernel-rt-debug-core-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 4e6bfe16cb9207c827287b96f5d4378f8c3b5d5a8d1426b819b3bada27723b0a

kernel-rt-debug-debuginfo-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 38e7a67f9455d53604db3ce1759727ec4df0b83f9d3beeed4e0331448237b70b

kernel-rt-debug-devel-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 4c9e8d4f5d4fd54e68c93a2e6d4bae786c8ce2a95d416ae16f4a714b23300b12

kernel-rt-debug-kvm-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: e3aa442b54a58a37b01e20817961edba4dbd7dda511e1e8dbf011813bc6c1f32

kernel-rt-debug-modules-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 501d9e6a095e84fc9ca68ce611bc264caaa670765c4ce743771e4764150402f1

kernel-rt-debug-modules-extra-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: d989a92bb508fa8275d69aad54bc9ed54b1e8c3821296666c22f05a1a52667d1

kernel-rt-debuginfo-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 4c1453b0c141266b8a232c9735f6c3b1ab940a08699a35be327e1bbaa38defcd

kernel-rt-debuginfo-common-x86_64-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 5cf979018797cab9db0bdd33c7c5a11c36751da2d693f9d560f36b66c6be7ba8

kernel-rt-devel-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 055e928c68f9ca86439ec9be60157a0255b3092912839e7c0cf3aa06dc9b570d

kernel-rt-kvm-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 38c23f26aed9c0328344091c95cbb9aaf7cc644708a20ba2befaa2f387550bfc

kernel-rt-modules-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: 1a6652b342892f4d9660a19623b5047ed7d50df10e8075ce32d4488883ebee3e

kernel-rt-modules-extra-5.14.0-162.23.1.rt21.186.el9_1.x86_64.rpm

SHA-256: dccd8d908c09bc58d245d4f54ce65bb8805753644dbefe17a745543d455a3c0a

The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.

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