-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2018:3540-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:3540 Issue date: 2018-11-13 CVE Names: CVE-2017-18344 CVE-2018-5391 CVE-2018-10675 CVE-2018-14634 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 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. 7.4) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.4) - 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) * kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact (CVE-2018-10675) * kernel: Integer overflow in Linux's create_elf_tables function (CVE-2018-14634) 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 and Qualys Research Labs for reporting CVE-2018-14634. 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/3684891 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/): 1575065 - CVE-2018-10675 kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact 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 1624498 - CVE-2018-14634 kernel: Integer overflow in Linux's create_elf_tables function 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.4): Source: kernel-3.10.0-693.43.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.43.1.el7.noarch.rpm kernel-doc-3.10.0-693.43.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.43.1.el7.x86_64.rpm kernel-debug-3.10.0-693.43.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.43.1.el7.x86_64.rpm kernel-devel-3.10.0-693.43.1.el7.x86_64.rpm kernel-headers-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.43.1.el7.x86_64.rpm perf-3.10.0-693.43.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm python-perf-3.10.0-693.43.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.43.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.4): Source: kernel-3.10.0-693.43.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.43.1.el7.noarch.rpm kernel-doc-3.10.0-693.43.1.el7.noarch.rpm ppc64: kernel-3.10.0-693.43.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-693.43.1.el7.ppc64.rpm kernel-debug-3.10.0-693.43.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-693.43.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.43.1.el7.ppc64.rpm kernel-devel-3.10.0-693.43.1.el7.ppc64.rpm kernel-headers-3.10.0-693.43.1.el7.ppc64.rpm kernel-tools-3.10.0-693.43.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-693.43.1.el7.ppc64.rpm perf-3.10.0-693.43.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm python-perf-3.10.0-693.43.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-693.43.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.43.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.43.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.43.1.el7.ppc64le.rpm kernel-devel-3.10.0-693.43.1.el7.ppc64le.rpm kernel-headers-3.10.0-693.43.1.el7.ppc64le.rpm kernel-tools-3.10.0-693.43.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.43.1.el7.ppc64le.rpm perf-3.10.0-693.43.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm python-perf-3.10.0-693.43.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm s390x: kernel-3.10.0-693.43.1.el7.s390x.rpm kernel-debug-3.10.0-693.43.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-693.43.1.el7.s390x.rpm kernel-debug-devel-3.10.0-693.43.1.el7.s390x.rpm kernel-debuginfo-3.10.0-693.43.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-693.43.1.el7.s390x.rpm kernel-devel-3.10.0-693.43.1.el7.s390x.rpm kernel-headers-3.10.0-693.43.1.el7.s390x.rpm kernel-kdump-3.10.0-693.43.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-693.43.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-693.43.1.el7.s390x.rpm perf-3.10.0-693.43.1.el7.s390x.rpm perf-debuginfo-3.10.0-693.43.1.el7.s390x.rpm python-perf-3.10.0-693.43.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.s390x.rpm x86_64: kernel-3.10.0-693.43.1.el7.x86_64.rpm kernel-debug-3.10.0-693.43.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.43.1.el7.x86_64.rpm kernel-devel-3.10.0-693.43.1.el7.x86_64.rpm kernel-headers-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.43.1.el7.x86_64.rpm perf-3.10.0-693.43.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm python-perf-3.10.0-693.43.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.4): ppc64: kernel-debug-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.43.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-693.43.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.43.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.43.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.43.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.43.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.43.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.43.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.43.1.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/cve/CVE-2018-10675 https://access.redhat.com/security/cve/CVE-2018-14634 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/3553061 https://access.redhat.com/security/vulnerabilities/mutagen-astronomy https://access.redhat.com/articles/3684891 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+r9CNzjgjWX9erEAQgdxxAAjJjKly4BFxBrDknNRWpm8wKXis8KW+xN n97vF/PY1t6v37iOFRkrYfRZ9jBAWCDGfozmPuxeIkeIYlJOuryqejIaGzokr612 AkNI4+SDKANGazB7btlFw5CyA6wQUNWNUyLc2MYMa5+x2tNKwZF3vjpve0zHxmcI Fb6gwqlyQUg6Erpnvacpve329kqFB765Kd+sYA9Gb4vylR8+srH6jVJIHPBwEQ33 8TrpABbevLSt0mxw4aUbiPdaxtgkYwMbL8T+kvW/pji3+QbiOP2oqEeRLXVChaoM +WzFXkNQW6EvI/3PinrH2BVQf7JvF7VQxTP6hNaaBnOyVaT74qhb41Mh2Q75kICs q8le6tYgNe6kDffCWryRYd96XsGXIKUqi5XuaQKAh+PL8Fynp3AnHSWlXjm5vD87 JDYB5SzoGJyJkvNkyr8AT6oW3BjW77mSU6R20YvLlW1olprZ0saH7Ew7V2b0+Hwi dO7anqxQvaeskZvJQIkCAI1OCGY5XyV/EeNWN5ci9RpG0iPBJYKOW3zCFRjTGoCj 2iVIKGiLjpNtz1VlMu/5vPgxLlzOtZdk7AisG90vFZQkvj/y1Nbv6yZlJfbODJOe fUcFo3nFiVyq2eY2xWlGgN3ydYtXCGFgKzD+uYrHz8Qgc5R5KhEbGvnL0PIpjWV/ qd7daECXD90= =F2Xx -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce