-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2019:0188-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:0188 Issue date: 2019-01-29 CVE Names: CVE-2018-18559 ==================================================================== 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 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 Realtime (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 due to race condition in AF_PACKET implementation (CVE-2018-18559) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * The kernel-rt packages have been upgraded to the 3.10.0-957.5.1 source tree, which provides a number of bug fixes over the previous version. (BZ#1653822) * Under certain circumstances, the following warning message, which indicated a SCHED_DEADLINE bandwidth tracking mechanism error, occurred: WARNING: CPU: 8 PID: 19536 at kernel/sched/deadline.c:64 dequeue_task_dl+0x121/0x140 This update fixes the sched_setscheduler() core kernel function, and backports multiple upstream patches to the SCHED_DEADLINE scheduler. As a result, the SCHED_DEADLINE bandwidth tracking mechanism is prevented from error conditions, and the warning message no longer occurs. (BZ#1655439) 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/): 1641878 - CVE-2018-18559 kernel: Use-after-free due to race condition in AF_PACKET implementation 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-957.5.1.rt56.916.el7.src.rpm noarch: kernel-rt-doc-3.10.0-957.5.1.rt56.916.el7.noarch.rpm x86_64: kernel-rt-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debug-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-devel-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-kvm-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-trace-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm Red Hat Enterprise Linux Realtime (v. 7): Source: kernel-rt-3.10.0-957.5.1.rt56.916.el7.src.rpm noarch: kernel-rt-doc-3.10.0-957.5.1.rt56.916.el7.noarch.rpm x86_64: kernel-rt-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debug-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-devel-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-trace-3.10.0-957.5.1.rt56.916.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-957.5.1.rt56.916.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-2018-18559 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 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXFCMwtzjgjWX9erEAQh6ihAAj+Fo/ZmA5wmCkGhA8I53dSsHprnUn2Uz l/1yFyRNDu1ztt2xdA3Nf6vOFE5bZFcCNR/DFs93ZZuxDX+ydIQthDniy+ZI5C2K KPpJDCLrtQvrOakSmgreY1X4qH1qJzgws0cUvZaKXP5HgWmeRW86EuJrEU6MxmD2 evrvEoi+HijAAMJ87JjsrU8cXKuZliVHeeuGyYEeeKU8PnjGLFj0cvcpLPTisA3I GmlgcGYMQAoj8QPPeUsU9vpz6PwaUlEh7o7vXDFT6JAiXXeyPO31NS1fzLCvRKDt N4r0Qp71CpkEisG7GJXpcr0cOzej8ZjURfssjhDDWwZQZmBoy9cMbVAueisZKvUd cTxIDLwxBiRQoSzttWoCZvgoHo/Fb9hE1RHY6PLP8Z7XDVQggJjGIJw36NBF8iZp 3XfpIl8qYqEWLeJIHOgPFFzRhod5snqJx79T6t2bmyTKklYeKGl4aBqJW7OAWjo+ Q5a5haQFr+KRnQ0mrQcPOwp6Diq41xbzAqzQLWxwOCUeyTMoJ/l6qrlkcu5hIRvd nmKvXdxUXT2fnPPNQqw/zsPBxImGX0UEyP6lOJExjqeoUBmftry2aygJwK3cKr3t ubHpq92eMjD6DyIK/0phSYSP6v7kbv+zgnKbljD5LnRNNqDlDVsWOGRTcAlf+ec8 Q3j7uarNhzw=XbLN -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce