-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2018:3459-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:3459 Issue date: 2018-11-06 CVE Names: CVE-2017-18344 CVE-2018-5391 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.5 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. 7.5) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.5) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.5) - ppc64, ppc64le, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4 and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a denial of service on the system. (CVE-2018-5391) * kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344) 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 Juha-Matti Tilli (Aalto University - Department of Communications and Networking and Nokia Bell Labs) for reporting CVE-2018-5391. Bug Fix(es): These updated kernel packages include also numerous bug fixes. Space precludes documenting all of the bug fixes in this advisory. See the descriptions in the related Knowledge Article: https://access.redhat.com/articles/3674801 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/): 1609664 - CVE-2018-5391 kernel: IP fragments with random offsets allow a remote denial of service (FragmentSmack) 1610958 - CVE-2017-18344 kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.5): Source: kernel-3.10.0-862.20.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-862.20.2.el7.noarch.rpm kernel-doc-3.10.0-862.20.2.el7.noarch.rpm x86_64: kernel-3.10.0-862.20.2.el7.x86_64.rpm kernel-debug-3.10.0-862.20.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.20.2.el7.x86_64.rpm kernel-devel-3.10.0-862.20.2.el7.x86_64.rpm kernel-headers-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-862.20.2.el7.x86_64.rpm perf-3.10.0-862.20.2.el7.x86_64.rpm perf-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm python-perf-3.10.0-862.20.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5): x86_64: kernel-debug-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-862.20.2.el7.x86_64.rpm perf-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.5): Source: kernel-3.10.0-862.20.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-862.20.2.el7.noarch.rpm kernel-doc-3.10.0-862.20.2.el7.noarch.rpm ppc64: kernel-3.10.0-862.20.2.el7.ppc64.rpm kernel-bootwrapper-3.10.0-862.20.2.el7.ppc64.rpm kernel-debug-3.10.0-862.20.2.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm kernel-debug-devel-3.10.0-862.20.2.el7.ppc64.rpm kernel-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-862.20.2.el7.ppc64.rpm kernel-devel-3.10.0-862.20.2.el7.ppc64.rpm kernel-headers-3.10.0-862.20.2.el7.ppc64.rpm kernel-tools-3.10.0-862.20.2.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm kernel-tools-libs-3.10.0-862.20.2.el7.ppc64.rpm perf-3.10.0-862.20.2.el7.ppc64.rpm perf-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm python-perf-3.10.0-862.20.2.el7.ppc64.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm ppc64le: kernel-3.10.0-862.20.2.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-862.20.2.el7.ppc64le.rpm kernel-debug-3.10.0-862.20.2.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-862.20.2.el7.ppc64le.rpm kernel-devel-3.10.0-862.20.2.el7.ppc64le.rpm kernel-headers-3.10.0-862.20.2.el7.ppc64le.rpm kernel-tools-3.10.0-862.20.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm kernel-tools-libs-3.10.0-862.20.2.el7.ppc64le.rpm perf-3.10.0-862.20.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm python-perf-3.10.0-862.20.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm s390x: kernel-3.10.0-862.20.2.el7.s390x.rpm kernel-debug-3.10.0-862.20.2.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-862.20.2.el7.s390x.rpm kernel-debug-devel-3.10.0-862.20.2.el7.s390x.rpm kernel-debuginfo-3.10.0-862.20.2.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-862.20.2.el7.s390x.rpm kernel-devel-3.10.0-862.20.2.el7.s390x.rpm kernel-headers-3.10.0-862.20.2.el7.s390x.rpm kernel-kdump-3.10.0-862.20.2.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-862.20.2.el7.s390x.rpm kernel-kdump-devel-3.10.0-862.20.2.el7.s390x.rpm perf-3.10.0-862.20.2.el7.s390x.rpm perf-debuginfo-3.10.0-862.20.2.el7.s390x.rpm python-perf-3.10.0-862.20.2.el7.s390x.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.s390x.rpm x86_64: kernel-3.10.0-862.20.2.el7.x86_64.rpm kernel-debug-3.10.0-862.20.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.20.2.el7.x86_64.rpm kernel-devel-3.10.0-862.20.2.el7.x86_64.rpm kernel-headers-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-862.20.2.el7.x86_64.rpm perf-3.10.0-862.20.2.el7.x86_64.rpm perf-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm python-perf-3.10.0-862.20.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.5): ppc64: kernel-debug-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm kernel-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-862.20.2.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-862.20.2.el7.ppc64.rpm perf-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm kernel-debug-devel-3.10.0-862.20.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-862.20.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-862.20.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-862.20.2.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-862.20.2.el7.x86_64.rpm perf-debuginfo-3.10.0-862.20.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-862.20.2.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-2017-18344 https://access.redhat.com/security/cve/CVE-2018-5391 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/3553061 https://access.redhat.com/articles/3674801 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 iQIVAwUBW+Gzv9zjgjWX9erEAQirPw//SedmXNee3segeE0SatoXNlmisOv8xHF0 +IH10+BbqaolgUfa6WAH7+u4H0vLcyWhWWtGAcKrIKjoN70qi0P07C5q4dXYPwF2 YOyT6mTG1egSvOUMeOy7gzIOVWc2q32L7+FXsARGBczqiOPWuB5lBX+ukang/aKP f8D1iFrMs1Q0zd4pJQgTEoVX8hTWEpntKF7BFtrckuxWafbXi8m/l61gYg2df9Vr yPgopj1ovK1JY7LCgkc4K/4KZS+ZuCV5Ez8quHfIZTVcceBihvSTnCmQnyQMI70I 7MBvlR/Dv9dHUNiVTnm88JJ54LfWzg2FyF8UHSoTAscooxvCmJsNerkoWgfuKE4I Sw/CQsvqAsmU56DBCHh7l6rrNQr3OLDeIIP9bIPmsMDvGSAlOogLJqblwxYlMTY1 ztW3UeWgdp9YrHI0N/Xi/ckANKcis0ckumhspys/RI98VAHQjPJExeMs9YvQsb6T 6uWbDmsX2VLauW+azKES/NPBsxX9Vc/lNw9E1WLUh+5bkLSBmOFylHwu3S0RQ9qA OZhIht9lA0Sv83QfRWCyTr3BXxD4yDVA5hJvhJgSv3CC1XHd9eySpCo+JtMmudtE BIMrsP4APJqgMDMt94ueRDRb0PfxeKqYgHhEyHjrnLv8muWFx0s1XAbe8fZGc15O Jr+XVn074eI=V3EQ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce