-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2021:0537-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0537 Issue date: 2021-02-16 CVE Names: CVE-2020-14351 CVE-2020-25705 CVE-2020-29661 ==================================================================== 1. Summary: 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Real Time (v. 8) - x86_64 Red Hat Enterprise Linux Real Time for NFV (v. 8) - 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: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661) * kernel: performance counters race condition use-after-free (CVE-2020-14351) * kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) 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 RHEL-8.3.z2 source tree (BZ#1908433) 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/): 1862849 - CVE-2020-14351 kernel: performance counters race condition use-after-free 1894579 - CVE-2020-25705 kernel: ICMP rate limiting can be used for DNS poisoning attack 1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free 6. Package List: Red Hat Enterprise Linux Real Time for NFV (v. 8): Source: kernel-rt-4.18.0-240.15.1.rt7.69.el8_3.src.rpm x86_64: kernel-rt-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-core-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-core-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-devel-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-kvm-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-modules-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debuginfo-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-devel-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-kvm-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-modules-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-modules-extra-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm Red Hat Enterprise Linux Real Time (v. 8): Source: kernel-rt-4.18.0-240.15.1.rt7.69.el8_3.src.rpm x86_64: kernel-rt-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-core-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-core-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-devel-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-modules-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debuginfo-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-devel-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-modules-4.18.0-240.15.1.rt7.69.el8_3.x86_64.rpm kernel-rt-modules-extra-4.18.0-240.15.1.rt7.69.el8_3.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-2020-14351 https://access.redhat.com/security/cve/CVE-2020-25705 https://access.redhat.com/security/cve/CVE-2020-29661 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 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYCvautzjgjWX9erEAQjl4Q//d3LiKWiINQu3q0AXFYyQT5ypNjzxVCzi 6ApKzWXTnyr5dLXhwq5dpj8d9nRmYUb6RosA2wzcssrBoUVhQxIKBR2CwpTWPzeu bzf1ehstmzI1z3Vzh3MMIAw6gaeeYRQgyuoRU9KYe+LRrE2RxrVvn5WvqgogjgJ4 NedujToJPzfQE123e2L40Me/B0UDyWFMieJvWjA6/nolXHH8AOYs7rsnbue5ZB3s fWXOQrsOGHM3WWBJuZqmLF45GhewXWTm2Rzzxl1ANaNc5LnWgxo2y6is7uzxnffr lbqH5iVm3Wi5kJabdmDLCIHyjsUGENzOzMLKwxJwObtbb3QlUE7YEl1w/hUg0ul3 u8ud/8DCCdLCQhAlLo8c3w7T06PI56XgmmSbuXaw+GCNJ60zbJD146i48XAf70re PlBP07iG1tbt8UYpEbiUzXfYYS/WPJAmdL8Yje332wFCPPG2/fWtkb8a2d7DHqk/ OhduG+73vJ26P/hTCKURw6XcfetucL2ufDb/5n6tAcU1zqzcCuwUMOFuiut0y8f4 8kOOc9ztNtAx+fBekdQNLeIOdQpqbwWHYFRaQHuE7p+05/plQvUp+W6L0lfjwihD 2WkJQfxNdf5+iJ6FVU4cUvqUIWPtwaXbdofDDWWW/Ii80UpAQl+jEHhDZj6HNxsT ZjEwWXIpENw=RYnS -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce