-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2018:1355-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1355 Issue date: 2018-05-08 CVE Names: CVE-2017-16939 CVE-2018-1068 CVE-2018-1087 CVE-2018-8897 CVE-2018-1000199 ===================================================================== 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: error in exception handling leads to wrong debug stack value (CVE-2018-1087) * Kernel: error in exception handling leads to DoS (CVE-2018-8897) * Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation (CVE-2017-16939) * kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c (CVE-2018-1068) * kernel: ptrace() incorrect error handling leads to corruption and DoS (CVE-2018-1000199) 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. Red Hat would like to thank Andy Lutomirski for reporting CVE-2018-1087 and CVE-2018-1000199 and Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897. Bug Fix(es): * The kernel-rt packages have been upgraded to the 3.10.0-862.2.3 source tree, which provides a number of bug fixes over the previous version. (BZ#1549768) 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/): 1517220 - CVE-2017-16939 Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation 1549768 - kernel-rt: update to the RHEL7.5.z batch#1 source tree 1552048 - CVE-2018-1068 kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c 1566837 - CVE-2018-1087 Kernel: KVM: error in exception handling leads to wrong debug stack value 1567074 - CVE-2018-8897 Kernel: error in exception handling leads to DoS 1568477 - CVE-2018-1000199 kernel: ptrace() incorrect error handling leads to corruption and DoS 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-862.2.3.rt56.806.el7.src.rpm noarch: kernel-rt-doc-3.10.0-862.2.3.rt56.806.el7.noarch.rpm x86_64: kernel-rt-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-devel-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-kvm-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm Red Hat Enterprise Linux Realtime (v. 7): Source: kernel-rt-3.10.0-862.2.3.rt56.806.el7.src.rpm noarch: kernel-rt-doc-3.10.0-862.2.3.rt56.806.el7.noarch.rpm x86_64: kernel-rt-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-devel-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-862.2.3.rt56.806.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-862.2.3.rt56.806.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-2017-16939 https://access.redhat.com/security/cve/CVE-2018-1068 https://access.redhat.com/security/cve/CVE-2018-1087 https://access.redhat.com/security/cve/CVE-2018-8897 https://access.redhat.com/security/cve/CVE-2018-1000199 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/pop_ss 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFa8iPFXlSAg2UNWIIRAimcAJ9PyhLNkFZaSyrDi2gHNnGgpwAs8gCfUqkW HAZMOG7hwIVzN1vkw37Q1X4= =0Sxa -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce