-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2019:0833-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:0833 Issue date: 2019-04-23 CVE Names: CVE-2019-6974 CVE-2019-7221 ==================================================================== 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: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974) * Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer (CVE-2019-7221) 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): * VM hangs on RHEL rt-kernel and OSP 13 [rhel-7.6.z] (BZ#1688673) * kernel-rt: update to the RHEL7.6.z batch#4 source tree (BZ#1689417) Users of kernel are advised to upgrade to these updated packages, which fix these bugs. 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/): 1671904 - CVE-2019-7221 Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer 1671913 - CVE-2019-6974 Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() 1688673 - VM hangs on RHEL rt-kernel and OSP 13 [rhel-7.6.z] 1689417 - kernel-rt: update to the RHEL7.6.z batch#4 source tree 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-957.12.1.rt56.927.el7.src.rpm noarch: kernel-rt-doc-3.10.0-957.12.1.rt56.927.el7.noarch.rpm x86_64: kernel-rt-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-devel-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-kvm-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm Red Hat Enterprise Linux Realtime (v. 7): Source: kernel-rt-3.10.0-957.12.1.rt56.927.el7.src.rpm noarch: kernel-rt-doc-3.10.0-957.12.1.rt56.927.el7.noarch.rpm x86_64: kernel-rt-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-devel-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-957.12.1.rt56.927.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-2019-6974 https://access.redhat.com/security/cve/CVE-2019-7221 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 iQIVAwUBXL8MhtzjgjWX9erEAQhtaRAAgTMIiG/eAvfPFp+pWN1HraVwiT1ff/dK /0HALQW/u8O/CBnKPPsUKrDQZT5Z43x4wij6dR5AFlgRI0bwxYnixH1T/oxBkID1 kJcKWwuBnyv6Pxlhd5gxRNeZs0EKCATk/bnI+6NnUFfutt2IIZm9xDOA6HcgK8pp JoLey3Z30Zjapetf+KXWeAotaEj455dNBr6mUwQZRN9nD3q8BBj53tSWKhcgGlFY 2zWg4Fc6TYnpfrGzvVR+6fuY8u4VmpOOtvztB854GaXm9NkJ+Q28pygu0TmRMzUS xprTzEEO2SZpheZybDH0f6H5DemOW39rktf1p/cbb6Pc2eOFC3C3BlVZQ+k8pVax FLVvvSh81t5XIxrvrogjSvY6p6vVvbF3vV8NXcNhC3HEIoAEu7umsE23M4h8prCx PrTyVv1YgGhrJ15LHBmNpMlKT8LsuguZKnC8z5Q36K/VsQrAtnQhcz+UCl851Dr6 ETd03PIKwHR+KKR4l/BLxIGDl2RhbsKYadY0uBQVFZBuH06kk3TA3fpu43CsNDX8 9shR2jY6BBiJtTFY0mTHy43y4TKtydxivAlufk8hb9yuY1D0p0sjKkMFvSqCMBP/ /gUW3bMXSr6l2Bge27TDw0v5vylfIz1nbsBhzWfNHSoEPSO3UT3ttCZziSR/koKl E3Pf5ET0wjAP+ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce