-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2021:3439-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3439 Issue date: 2021-09-07 CVE Names: CVE-2021-3715 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 for Real Time (v. 7) - noarch, x86_64 Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, 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 in route4_change() in net/sched/cls_route.c (CVE-2021-3715) 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 to the latest RHEL7.9.z source tree (BZ#1995878) 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/): 1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-1160.42.2.rt56.1182.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.42.2.rt56.1182.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm Red Hat Enterprise Linux for Real Time (v. 7): Source: kernel-rt-3.10.0-1160.42.2.rt56.1182.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.42.2.rt56.1182.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.42.2.rt56.1182.el7.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-2021-3715 https://access.redhat.com/security/updates/classification/#moderate 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 iQIVAwUBYTd9+9zjgjWX9erEAQjyDRAAhNk0ikviP/O0qXyF4V3Ix6pKk0Jb7yIV 8MjfpKAlJyyL0Q+eUALLYE9Zrd74G7QQf/irji9ISUhZIt5Ct2+8BDC+t4NLDE4S VyY0Wq7j9JfsDQMEEJmRpk95JbwT92EXZaSFPeRTv6RA6RE/G61R8U+52SWLXi0Y dOQlyUui6i5Hh3wHvePZAMvWm2xbHbYQPLoHcF5zlBINKbZ4Onnm5NZJVND7j/t6 t470Jqdscwu6wunbcbJGXaF2MKtHOYWsbrg9PN013v+JzosSIaryPgZvGcP/C/qO +OLZ5+1vxz8tA/zBs/71anC+VP3CHHy26eKG2ncCxT+BmHFiHLEzEDBy8H9Nm8O+ eXh6y/vQILRVPBEzOIJXYzAxl70sA4K/EV5Qy6X9pmv1k40WaNSyHbmdhOk+cjZ9 jo43tq9DaPkhoz1D8S5nVya6Rx/fYnR1CcADDGU03SiaQL8L8aDtoY5YKRISKcd7 /LZu0QCAvkHc1DglUWDC3RcMF3duxfxbnGVPTRoXCQFqGLBhWh/r3pHtXi4v8u1X dpHzvY3NeROVxffUJdkNp959dAfOU+4nui6pLGM1VUORt8enXU7UJTzHC008CEuI JmUQaU+wRSQXqq2u+P+vKUuwEsiK5v2VjRbcA43qiJffzq6LmjsddY4T8LfXeHlO 0X1zoqsQras= =HHSK -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce