-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2023:1220-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2023:1220 Issue date: 2023-03-14 CVE Names: CVE-2022-3564 CVE-2022-4269 CVE-2022-4378 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 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.8.4) - x86_64 Red Hat Enterprise Linux Real Time for NFV EUS (v.8.4) - 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: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564) * kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378) * kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269) 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-8.4.z15 source tree. (BZ#2162415) 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/): 2150272 - CVE-2022-4269 kernel: net: CPU soft lockup in TC mirred egress-to-ingress action 2150999 - CVE-2022-3564 kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c 2152548 - CVE-2022-4378 kernel: stack overflow in do_proc_dointvec and proc_skip_spaces 6. Package List: Red Hat Enterprise Linux Real Time for NFV EUS (v.8.4): Source: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.src.rpm x86_64: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-kvm-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-kvm-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm Red Hat Enterprise Linux Real Time EUS (v.8.4): Source: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.src.rpm x86_64: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.82.1.rt7.154.el8_4.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-2022-3564 https://access.redhat.com/security/cve/CVE-2022-4269 https://access.redhat.com/security/cve/CVE-2022-4378 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 iQIVAwUBZBCPc9zjgjWX9erEAQhVyw/+NvNJ3IuRZTKxm06qw770U5gqGg9uRSqi vbyJmpoc/mqvE0wsVwHNdkZPhGRTnX1P8lsf65KwLvpLUP9b7K9UpiYKmR1iBd3R nwT2NHqLjIk3pNPdolHre7PNhvNbPj0zZlkXPH/UTkCl7+ZLbsQaJtOlsT2UBZ8h TeWOtBfCeJ6phqoH9Oe8HTol11MvSzvZ7rZKiTSRg1tjeCPzNDGH3U8MM+iNUqfK y3aS1lsZrvumM3sgdlu4Mv917BB4i2W3DgtHVgpd3BYcT/aHRkSIrr5oWXi89vfj ykjHhZGh/7bFYbcF+9hEaQ9MbYUHngJKEV/ElBxwo/HjdcwE8znePpmbHFF83t/7 sxUozRzh4QmJwnZrgzPa/nyKZlLf0rpRaEPR7ZPSTu7iyU69KhBC9KrQquDIx41a aCEDX3rQjskVQ6LIvTAuffH0hqNRNuq0h+cMqNT92ffVrHqr2O6ZFjdG+f5iXsPw 4xqlzE685jwxXi0qVsUceJFKssoHCmuOBTJtGa0FRcw11JymfNfTm8ZZ+QSBKnlp t7XiwYUwEf7AGgWLlf8ncLF8fED5nbc18N1UiBXTIVfD+6PwOCPCb8Y4jfM9ZqWH fi6RG7QlDG++8YeVCBJP3gjgHRETUzpeIADI3b66Em4/+do64kltE11NQ+Ju6AcG CtYbshT1kYU= =R5q4 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce