-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2016:1657-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1657.html Issue date: 2016-08-23 CVE Names: CVE-2016-4470 CVE-2016-4565 CVE-2016-5696 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.1 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 ComputeNode EUS (v. 7.1) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.1) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.1) - ppc64, ppc64le, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A flaw was found in the Linux kernel's keyring handling code, where in key_reject_and_link() an uninitialised variable would eventually lead to arbitrary free address which could allow attacker to use a use-after-free style attack. (CVE-2016-4470, Important) * A flaw was found in the way certain interfaces of the Linux kernel's Infiniband subsystem used write() as bi-directional ioctl() replacement, which could lead to insufficient memory security checks when being invoked using the splice() system call. A local unprivileged user on a system with either Infiniband hardware present or RDMA Userspace Connection Manager Access module explicitly loaded, could use this flaw to escalate their privileges on the system. (CVE-2016-4565, Important) * A flaw was found in the implementation of the Linux kernel's handling of networking challenge ack where an attacker is able to determine the shared counter which could be used to determine sequence numbers for TCP stream injection. (CVE-2016-5696, Important) Red Hat would like to thank Jann Horn for reporting CVE-2016-4565 and Yue Cao (Cyber Security Group of the CS department of University of California in Riverside) for reporting CVE-2016-5696. The CVE-2016-4470 issue was discovered by David Howells (Red Hat Inc.). 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/): 1310570 - CVE-2016-4565 kernel: infiniband: Unprivileged process can overwrite kernel memory using rdma_ucm.ko 1341716 - CVE-2016-4470 kernel: Uninitialized variable in request_key handling causes kernel crash in error handling path 1354708 - CVE-2016-5696 kernel: challenge ACK counter information disclosure. 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.1): Source: kernel-3.10.0-229.40.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-229.40.1.el7.noarch.rpm kernel-doc-3.10.0-229.40.1.el7.noarch.rpm x86_64: kernel-3.10.0-229.40.1.el7.x86_64.rpm kernel-debug-3.10.0-229.40.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-229.40.1.el7.x86_64.rpm kernel-devel-3.10.0-229.40.1.el7.x86_64.rpm kernel-headers-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-229.40.1.el7.x86_64.rpm perf-3.10.0-229.40.1.el7.x86_64.rpm perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1): x86_64: kernel-debug-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-229.40.1.el7.x86_64.rpm perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm python-perf-3.10.0-229.40.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.1): Source: kernel-3.10.0-229.40.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-229.40.1.el7.noarch.rpm kernel-doc-3.10.0-229.40.1.el7.noarch.rpm ppc64: kernel-3.10.0-229.40.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-229.40.1.el7.ppc64.rpm kernel-debug-3.10.0-229.40.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-229.40.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-229.40.1.el7.ppc64.rpm kernel-devel-3.10.0-229.40.1.el7.ppc64.rpm kernel-headers-3.10.0-229.40.1.el7.ppc64.rpm kernel-tools-3.10.0-229.40.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-229.40.1.el7.ppc64.rpm perf-3.10.0-229.40.1.el7.ppc64.rpm perf-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm s390x: kernel-3.10.0-229.40.1.el7.s390x.rpm kernel-debug-3.10.0-229.40.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-229.40.1.el7.s390x.rpm kernel-debug-devel-3.10.0-229.40.1.el7.s390x.rpm kernel-debuginfo-3.10.0-229.40.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-229.40.1.el7.s390x.rpm kernel-devel-3.10.0-229.40.1.el7.s390x.rpm kernel-headers-3.10.0-229.40.1.el7.s390x.rpm kernel-kdump-3.10.0-229.40.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-229.40.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-229.40.1.el7.s390x.rpm perf-3.10.0-229.40.1.el7.s390x.rpm perf-debuginfo-3.10.0-229.40.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.s390x.rpm x86_64: kernel-3.10.0-229.40.1.el7.x86_64.rpm kernel-debug-3.10.0-229.40.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-229.40.1.el7.x86_64.rpm kernel-devel-3.10.0-229.40.1.el7.x86_64.rpm kernel-headers-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-229.40.1.el7.x86_64.rpm perf-3.10.0-229.40.1.el7.x86_64.rpm perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.1): Source: kernel-3.10.0-229.40.1.ael7b.src.rpm noarch: kernel-abi-whitelists-3.10.0-229.40.1.ael7b.noarch.rpm kernel-doc-3.10.0-229.40.1.ael7b.noarch.rpm ppc64le: kernel-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-bootwrapper-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-debug-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-debug-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-devel-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-headers-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-tools-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-tools-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-tools-libs-3.10.0-229.40.1.ael7b.ppc64le.rpm perf-3.10.0-229.40.1.ael7b.ppc64le.rpm perf-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm python-perf-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.1): ppc64: kernel-debug-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-229.40.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-229.40.1.el7.ppc64.rpm perf-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm python-perf-3.10.0-229.40.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.ppc64.rpm s390x: kernel-debug-debuginfo-3.10.0-229.40.1.el7.s390x.rpm kernel-debuginfo-3.10.0-229.40.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-229.40.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-229.40.1.el7.s390x.rpm perf-debuginfo-3.10.0-229.40.1.el7.s390x.rpm python-perf-3.10.0-229.40.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.s390x.rpm x86_64: kernel-debug-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-229.40.1.el7.x86_64.rpm perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm python-perf-3.10.0-229.40.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-229.40.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.1): ppc64le: kernel-debug-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-debug-devel-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-tools-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm kernel-tools-libs-devel-3.10.0-229.40.1.ael7b.ppc64le.rpm perf-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.rpm python-perf-3.10.0-229.40.1.ael7b.ppc64le.rpm python-perf-debuginfo-3.10.0-229.40.1.ael7b.ppc64le.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-2016-4470 https://access.redhat.com/security/cve/CVE-2016-4565 https://access.redhat.com/security/cve/CVE-2016-5696 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 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFXvHb0XlSAg2UNWIIRAjQCAJwL/6O1STRM5ctSuThZwU8Nb6mcDACdE5gh ENdtmy7rWAntcOoDcJJXHKc= =2mv7 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce