-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2022:5224-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:5224 Issue date: 2022-06-28 CVE Names: CVE-2020-29368 CVE-2022-1012 CVE-2022-1729 CVE-2022-1966 CVE-2022-27666 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Real Time EUS (v. 8.2) - x86_64 Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) - x86_64 3. 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: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012) * kernel: race condition in perf_event_open leads to privilege escalation (CVE-2022-1729) * kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-1966) * kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666) * kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368) 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-8.2.z18 Batch (BZ#2081080) 4. 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. 5. Bugs fixed (https://bugzilla.redhat.com/): 1903244 - CVE-2020-29368 kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check 2061633 - CVE-2022-27666 kernel: buffer overflow in IPsec ESP transformation code 2064604 - CVE-2022-1012 kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak 2086753 - CVE-2022-1729 kernel: race condition in perf_event_open leads to privilege escalation 2092427 - CVE-2022-1966 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root 6. Package List: Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2): Source: kernel-rt-4.18.0-193.87.1.rt13.137.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm Red Hat Enterprise Linux Real Time EUS (v. 8.2): Source: kernel-rt-4.18.0-193.87.1.rt13.137.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.87.1.rt13.137.el8_2.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2020-29368 https://access.redhat.com/security/cve/CVE-2022-1012 https://access.redhat.com/security/cve/CVE-2022-1729 https://access.redhat.com/security/cve/CVE-2022-1966 https://access.redhat.com/security/cve/CVE-2022-27666 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYrr1i9zjgjWX9erEAQhyQg/+OyrkdYEswJSpaeuu0ZcDE+NIjTR3N685 rnHhRIwgChG9radEVWVuuhb4P4SCy2e+ZuTFWy7hPM6lFNsekOIgWp+jZuBBSrlj aKTAYhUSmj0KQCbwDfuxg3czvCw+phn3DuiS115WwV0SNGZeUq1fMVxV1rd9Erqj zIF1n0gwyrc1eeRKGl/Ag2Qc9xLtVUSdOXx1NngvDR4h6GSuQ/6YFqsktAGClZdi EKFrEAutq+5BGFYy9Eww9pX0EPe+jnhVOsXoLoDUYq758pzwiMWPYOLuBsHNTTJS 4oaMI7r19TFrB0YZ+cpgi6p/b+YsHEN+xrn2sSUgd7dq9k+ncUvuwCbswbTGQWOJ GrlEOvrRVZmkbAoon5iiWgFfw39OVLQXZjb1vbAUaTeLmBEMmwK1KTJBXo2HIk2k CkBR1+LQxyMc89lkPqfQDcM8CH1cEsncJ5Dd1p8IZaxKoANH6KkKcXh1DEzRw/xq NvKRvaz/CZ9tlPhb++q29N2MoR2Lt62m/djQ+cuZx2NKDkDsAEsJ7o3G46CRNjzz D0P39668vw/aLEl/dCdBngdcDv4bt+WbzbBioZ8q0a4wv8Qr60IuQmUqvg9HlmAl 59/Z6FXZO/DfUHuxF6MN2oPIP2DHGqcdvGqCfAv+IX3+8NyEU2uhoh6xoPlT0RNw /ydbRaY2DMo= =9Amr -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce