-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2023:4126-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2023:4126 Issue date: 2023-07-18 CVE Names: CVE-2023-0461 CVE-2023-1281 CVE-2023-1390 CVE-2023-32233 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Telecommunications Update Service. 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 TUS (v. 8.2) - x86_64 Red Hat Enterprise Linux Real Time for NFV TUS (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: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461) * kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation (CVE-2023-1281) * kernel: remote DoS in TIPC kernel module (CVE-2023-1390) * kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233) 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-8.2.z27 source tree (BZ#2209127) 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/): 2176192 - CVE-2023-0461 kernel: net/ulp: use-after-free in listening ULP sockets 2178212 - CVE-2023-1390 kernel: remote DoS in TIPC kernel module 2181847 - CVE-2023-1281 kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation 2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation 6. Package List: Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2): Source: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm Red Hat Enterprise Linux Real Time TUS (v. 8.2): Source: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.109.1.rt13.160.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-2023-0461 https://access.redhat.com/security/cve/CVE-2023-1281 https://access.redhat.com/security/cve/CVE-2023-1390 https://access.redhat.com/security/cve/CVE-2023-32233 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 2023 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJktmwOAAoJENzjgjWX9erE/bAP/13KpeTH0KZgRa34ZpWWaYij 6p3R83Bz7WnamsjPzVV6PHS/EZ//KdZZvCoUwxHR5Vc8toKlg2BMwETpdWMVCtyj BZ28ZBc/rWjOrQLdnvuY+C5cIqqWB2zqQQKCQsXVd1xmsZR1WL2fFOLY/99YQrZu UyOvXPXvOrMFd2JNJVgfk0pjrntcO19Ql40gFQ3zT8LKfseWL4907MsIGfTgT4ou fi28Ckx/GUzPyvO6A0sr4EPfX93Ckyj8e3kX5UxC+70+jV91L4d0rGhkgPgiB9Xp iIu8/NqMK39ywywFL/RJpruWEdUkpKi6ahVGOeLW4Ph5PsgGTRsyPYfv3kN0Ddlh SWq1lT0KcHOo94fcfE9DD/jX8X8VIKJSMAFxjhhRlIuIQskDqAEMfVW+9PFAdMsX lEPtny2OHm7XLuo1Zei2XWJfS4/CR3Pdvsxbni3dNYu+VQhX5Ot0ZMtTxdflP3TF Ouc15lQxRdGZ+14x+2ZbqWTLqd3nzE0baU41X7gPv1wMWmjbkhgXQtxLLqsM2hyF O4z0kKsy9ePGxxiGMv0Lt63BKO3/y5NiVrCYpGApC/U88cT+qy2vBS9YVm5rZAc+ 0t3uyOiHFRITDGCP0+Ppjx33YAbX7e3A0k5DkkAkXfJCHJa1pDddRwdo4p5IlIh9 lBmGBMSGy7/PZfhv++Aa =PBqO -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce