ID

VAR-201906-1176

CVE

CVE-2019-11478

TITLE

Multiple TCP Selective Acknowledgement (SACK) and Maximum Segment Size (MSS) networking vulnerabilities may cause denial-of-service conditions in Linux and FreeBSD kernels

DESCRIPTION

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e. Multiple TCP Selective Acknowledgement (SACK) and Maximum Segment Size (MSS) networking vulnerabilities may cause denial-of-service conditions in Linux and FreeBSD kernels. Linux Kernel Contains a resource exhaustion vulnerability.Service operation interruption (DoS) There is a possibility of being put into a state. Linux Kernel is prone to a denial-of-service vulnerability. This vulnerability stems from improper management of system resources (such as memory, disk space, files, etc.) by network systems or products. A successful exploit could cause the targeted system to crash, resulting in a DoS condition. Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. Kernel.org has confirmed the vulnerability and released software updates. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2019:1488-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:1488 Issue date: 2019-06-17 CVE Names: CVE-2019-3896 CVE-2019-11477 CVE-2019-11478 CVE-2019-11479 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6. 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 Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. While processing SACK segments, the Linux kernel's socket buffer (SKB) data structure becomes fragmented. Each fragment is about TCP maximum segment size (MSS) bytes. To efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of TCP MSS, resulting in a denial of service (DoS). (CVE-2019-11477) * kernel: Double free in lib/idr.c (CVE-2019-3896) * Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service (CVE-2019-11478) * Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service (CVE-2019-11479) 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): * MDS mitigations not enabled on Intel Skylake CPUs (BZ#1710081) * RHEL6 kernel does not disable SMT with mds=full,nosmt (BZ#1710121) * [RHEL6] md_clear flag missing from /proc/cpuinfo (BZ#1710517) 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/): 1694812 - CVE-2019-3896 kernel: Double free in lib/idr.c 1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service 1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service 1719129 - CVE-2019-11479 Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: kernel-2.6.32-754.15.3.el6.src.rpm i386: kernel-2.6.32-754.15.3.el6.i686.rpm kernel-debug-2.6.32-754.15.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debug-devel-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm kernel-devel-2.6.32-754.15.3.el6.i686.rpm kernel-headers-2.6.32-754.15.3.el6.i686.rpm perf-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-754.15.3.el6.noarch.rpm kernel-doc-2.6.32-754.15.3.el6.noarch.rpm kernel-firmware-2.6.32-754.15.3.el6.noarch.rpm x86_64: kernel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.15.3.el6.i686.rpm kernel-debug-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm kernel-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-headers-2.6.32-754.15.3.el6.x86_64.rpm perf-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: kernel-2.6.32-754.15.3.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-754.15.3.el6.noarch.rpm kernel-doc-2.6.32-754.15.3.el6.noarch.rpm kernel-firmware-2.6.32-754.15.3.el6.noarch.rpm x86_64: kernel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.15.3.el6.i686.rpm kernel-debug-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm kernel-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-headers-2.6.32-754.15.3.el6.x86_64.rpm perf-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: kernel-2.6.32-754.15.3.el6.src.rpm i386: kernel-2.6.32-754.15.3.el6.i686.rpm kernel-debug-2.6.32-754.15.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debug-devel-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm kernel-devel-2.6.32-754.15.3.el6.i686.rpm kernel-headers-2.6.32-754.15.3.el6.i686.rpm perf-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-754.15.3.el6.noarch.rpm kernel-doc-2.6.32-754.15.3.el6.noarch.rpm kernel-firmware-2.6.32-754.15.3.el6.noarch.rpm ppc64: kernel-2.6.32-754.15.3.el6.ppc64.rpm kernel-bootwrapper-2.6.32-754.15.3.el6.ppc64.rpm kernel-debug-2.6.32-754.15.3.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm kernel-debug-devel-2.6.32-754.15.3.el6.ppc64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-754.15.3.el6.ppc64.rpm kernel-devel-2.6.32-754.15.3.el6.ppc64.rpm kernel-headers-2.6.32-754.15.3.el6.ppc64.rpm perf-2.6.32-754.15.3.el6.ppc64.rpm perf-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm s390x: kernel-2.6.32-754.15.3.el6.s390x.rpm kernel-debug-2.6.32-754.15.3.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.s390x.rpm kernel-debug-devel-2.6.32-754.15.3.el6.s390x.rpm kernel-debuginfo-2.6.32-754.15.3.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-754.15.3.el6.s390x.rpm kernel-devel-2.6.32-754.15.3.el6.s390x.rpm kernel-headers-2.6.32-754.15.3.el6.s390x.rpm kernel-kdump-2.6.32-754.15.3.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-754.15.3.el6.s390x.rpm kernel-kdump-devel-2.6.32-754.15.3.el6.s390x.rpm perf-2.6.32-754.15.3.el6.s390x.rpm perf-debuginfo-2.6.32-754.15.3.el6.s390x.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.s390x.rpm x86_64: kernel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.15.3.el6.i686.rpm kernel-debug-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm kernel-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-headers-2.6.32-754.15.3.el6.x86_64.rpm perf-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-754.15.3.el6.ppc64.rpm perf-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm python-perf-2.6.32-754.15.3.el6.ppc64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-754.15.3.el6.s390x.rpm kernel-debuginfo-2.6.32-754.15.3.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-754.15.3.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-754.15.3.el6.s390x.rpm perf-debuginfo-2.6.32-754.15.3.el6.s390x.rpm python-perf-2.6.32-754.15.3.el6.s390x.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: kernel-2.6.32-754.15.3.el6.src.rpm i386: kernel-2.6.32-754.15.3.el6.i686.rpm kernel-debug-2.6.32-754.15.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debug-devel-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm kernel-devel-2.6.32-754.15.3.el6.i686.rpm kernel-headers-2.6.32-754.15.3.el6.i686.rpm perf-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-754.15.3.el6.noarch.rpm kernel-doc-2.6.32-754.15.3.el6.noarch.rpm kernel-firmware-2.6.32-754.15.3.el6.noarch.rpm x86_64: kernel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.15.3.el6.i686.rpm kernel-debug-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm kernel-devel-2.6.32-754.15.3.el6.x86_64.rpm kernel-headers-2.6.32-754.15.3.el6.x86_64.rpm perf-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-2.6.32-754.15.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.15.3.el6.i686.rpm perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm python-perf-2.6.32-754.15.3.el6.i686.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.15.3.el6.x86_64.rpm perf-debuginfo-2.6.32-754.15.3.el6.x86_64.rpm python-perf-2.6.32-754.15.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.15.3.el6.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-2019-3896 https://access.redhat.com/security/cve/CVE-2019-11477 https://access.redhat.com/security/cve/CVE-2019-11478 https://access.redhat.com/security/cve/CVE-2019-11479 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/tcpsack 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXQfbBdzjgjWX9erEAQjjiw//QtCd50n/kyijAWgyi02UAPD+QrPWRv6a gLSESiQGCl7YvWgt96eI5DANREmFMWQ8wB0LRku4KJ4tutBdTcyouWrHgHEYhXLB 24ZBi8HB/L9EhxKoQlHlY68ekZzbOcjqZhrL5K2xUnoVTJDo/+d+vtJgOIlrV/PC aXxRL5nez5Y8pjCiwqm37RP7OUnn6daLtqcu42DR9XovXqORrfJVo43+5HR0drLA ZB2B0ERUU+iFKpS6p9qIgfMLR9KRlMikeI+NRU/1JBjEDT5C4uT4fqULjM4a4QcR 4Cm+wN6ku7CTK8l+1RAKSAn12KMjHUfMhWT1X0XFTFl3lFifL6o6+5D0OVSM68xL k+E8pmoilN1nFk49Z9uLDbCJogLbPdgSOZohiuYLBfUE4IUy0OiCodmKRlQBxWTK tYBMbUQ1stywEGngsFAXnF7BIeC346+uvMT83TlfbhV+TNIFARjwx9ySNrV7hLes enTzE250yv7LaZ0tXGKhoPXfLif7nFFVNzupV1PM3uHDCjLYLRq5JQcd1IWCrBS0 IF5A/kp1X9zV8lO4fghj3aSXA7HwQphRBEJ4FkZSu34eqUX5rrC96X5T/8T9McOK iOKT/z03WI1mSBJUrU/x7N2v44mXr0kropqd/Yfqf6KQDJWW3aXkJJWxNMgBqiYS l+p3rcEBzDA=NzJu -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Bug Fix(es): * Mistmach between 'tty->termios->c_lflag' and 'ldata->icanon' for 'ICANON' (BZ#1708061) * RHEL7: rwsem reader/writer mutual exclusion guarantee may not work (BZ#1709702) * hardened usercopy is causing crash (BZ#1712311) * [RHEL7] md_clear flag missing from /proc/cpuinfo on late microcode update (BZ#1712991) * [RHEL7] MDS mitigations are not enabled after double microcode update (BZ#1712996) * WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:90 __static_key_slow_dec+0xa6/0xb0 (BZ#1713002) * [debug kernel] [x86_64]INFO: possible circular locking dependency detected (BZ#1715326) * RHEL-7.7: tty: termios_rwsem possible deadlock (BZ#1715329) Enhancement(s): * [MCHP 7.7 FEAT] Update smartpqi driver to latest upstream (BZ#1709467) 4. ========================================================================== Kernel Live Patch Security Notice 0058-1 October 22, 2019 linux vulnerability ========================================================================== A security issue affects these releases of Ubuntu: | Series | Base kernel | Arch | flavors | |------------------+--------------+----------+------------------| | Ubuntu 18.04 LTS | 4.15.0 | amd64 | aws | | Ubuntu 18.04 LTS | 4.15.0 | amd64 | generic | | Ubuntu 18.04 LTS | 4.15.0 | amd64 | lowlatency | | Ubuntu 18.04 LTS | 4.15.0 | amd64 | oem | | Ubuntu 18.04 LTS | 5.0.0 | amd64 | azure | | Ubuntu 14.04 LTS | 4.4.0 | amd64 | generic | | Ubuntu 14.04 LTS | 4.4.0 | amd64 | lowlatency | | Ubuntu 16.04 LTS | 4.4.0 | amd64 | aws | | Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic | | Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency | | Ubuntu 16.04 LTS | 4.15.0 | amd64 | azure | | Ubuntu 16.04 LTS | 4.15.0 | amd64 | generic | | Ubuntu 16.04 LTS | 4.15.0 | amd64 | lowlatency | Summary: Several security issues were fixed in the kernel. (CVE-2016-10905) It was discovered that a use-after-free error existed in the block layer subsystem of the Linux kernel when certain failure conditions occurred. (CVE-2018-20856) It was discovered that the USB gadget Midi driver in the Linux kernel contained a double-free vulnerability when handling certain error conditions. (CVE-2018-20961) It was discovered that the XFS file system in the Linux kernel did not properly handle mount failures in some situations. (CVE-2018-20976) It was discovered that the RSI 91x Wi-Fi driver in the Linux kernel did not did not handle detach operations correctly, leading to a use-after-free vulnerability. (CVE-2018-21008) It was discovered that the Intel Wi-Fi device driver in the Linux kernel did not properly validate certain Tunneled Direct Link Setup (TDLS). (CVE-2019-0136) It was discovered that the Linux kernel on ARM processors allowed a tracing process to modify a syscall after a seccomp decision had been made on that syscall. (CVE-2019-2054) It was discovered that an integer overflow existed in the Binder implementation of the Linux kernel, leading to a buffer overflow. (CVE-2019-2181) It was discovered that the Marvell Wireless LAN device driver in the Linux kernel did not properly validate the BSS descriptor. (CVE-2019-3846) It was discovered that a heap buffer overflow existed in the Marvell Wireless LAN device driver for the Linux kernel. (CVE-2019-10126) It was discovered that the Bluetooth UART implementation in the Linux kernel did not properly check for missing tty operations. (CVE-2019-11478) It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11833) It was discovered that the PowerPC dlpar implementation in the Linux kernel did not properly check for allocation errors in some situations. (CVE-2019-12614) It was discovered that the floppy driver in the Linux kernel did not properly validate meta data, leading to a buffer overread. (CVE-2019-14283) It was discovered that the floppy driver in the Linux kernel did not properly validate ioctl() calls, leading to a division-by-zero. (CVE-2019-14284) Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux kernel did not properly perform bounds checking, leading to a heap overflow. (CVE-2019-14814) Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux kernel did not properly perform bounds checking, leading to a heap overflow. (CVE-2019-14815) Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux kernel did not properly perform bounds checking, leading to a heap overflow. (CVE-2019-14816) Matt Delco discovered that the KVM hypervisor implementation in the Linux kernel did not properly perform bounds checking when handling coalesced MMIO write operations. (CVE-2019-14821) Peter Pi discovered a buffer overflow in the virtio network backend (vhost_net) implementation in the Linux kernel. (CVE-2019-14835) Update instructions: The problem can be corrected by updating your livepatches to the following versions: | Kernel | Version | flavors | |--------------------------+----------+--------------------------| | 4.4.0-148.174 | 58.1 | lowlatency, generic | | 4.4.0-148.174~14.04.1 | 58.1 | lowlatency, generic | | 4.4.0-150.176 | 58.1 | generic, lowlatency | | 4.4.0-150.176~14.04.1 | 58.1 | lowlatency, generic | | 4.4.0-151.178 | 58.1 | lowlatency, generic | | 4.4.0-151.178~14.04.1 | 58.1 | generic, lowlatency | | 4.4.0-154.181 | 58.1 | lowlatency, generic | | 4.4.0-154.181~14.04.1 | 58.1 | generic, lowlatency | | 4.4.0-157.185 | 58.1 | lowlatency, generic | | 4.4.0-157.185~14.04.1 | 58.1 | generic, lowlatency | | 4.4.0-159.187 | 58.1 | lowlatency, generic | | 4.4.0-159.187~14.04.1 | 58.1 | generic, lowlatency | | 4.4.0-161.189 | 58.1 | lowlatency, generic | | 4.4.0-161.189~14.04.1 | 58.1 | lowlatency, generic | | 4.4.0-164.192 | 58.1 | lowlatency, generic | | 4.4.0-164.192~14.04.1 | 58.1 | lowlatency, generic | | 4.4.0-165.193 | 58.1 | generic, lowlatency | | 4.4.0-1083.93 | 58.1 | aws | | 4.4.0-1084.94 | 58.1 | aws | | 4.4.0-1085.96 | 58.1 | aws | | 4.4.0-1087.98 | 58.1 | aws | | 4.4.0-1088.99 | 58.1 | aws | | 4.4.0-1090.101 | 58.1 | aws | | 4.4.0-1092.103 | 58.1 | aws | | 4.4.0-1094.105 | 58.1 | aws | | 4.15.0-50.54 | 58.1 | generic, lowlatency | | 4.15.0-50.54~16.04.1 | 58.1 | generic, lowlatency | | 4.15.0-51.55 | 58.1 | generic, lowlatency | | 4.15.0-51.55~16.04.1 | 58.1 | generic, lowlatency | | 4.15.0-52.56 | 58.1 | lowlatency, generic | | 4.15.0-52.56~16.04.1 | 58.1 | generic, lowlatency | | 4.15.0-54.58 | 58.1 | generic, lowlatency | | 4.15.0-54.58~16.04.1 | 58.1 | generic, lowlatency | | 4.15.0-55.60 | 58.1 | generic, lowlatency | | 4.15.0-58.64 | 58.1 | generic, lowlatency | | 4.15.0-58.64~16.04.1 | 58.1 | lowlatency, generic | | 4.15.0-60.67 | 58.1 | lowlatency, generic | | 4.15.0-60.67~16.04.1 | 58.1 | generic, lowlatency | | 4.15.0-62.69 | 58.1 | generic, lowlatency | | 4.15.0-62.69~16.04.1 | 58.1 | lowlatency, generic | | 4.15.0-64.73 | 58.1 | generic, lowlatency | | 4.15.0-64.73~16.04.1 | 58.1 | lowlatency, generic | | 4.15.0-65.74 | 58.1 | lowlatency, generic | | 4.15.0-1038.43 | 58.1 | oem | | 4.15.0-1039.41 | 58.1 | aws | | 4.15.0-1039.44 | 58.1 | oem | | 4.15.0-1040.42 | 58.1 | aws | | 4.15.0-1041.43 | 58.1 | aws | | 4.15.0-1043.45 | 58.1 | aws | | 4.15.0-1043.48 | 58.1 | oem | | 4.15.0-1044.46 | 58.1 | aws | | 4.15.0-1045.47 | 58.1 | aws | | 4.15.0-1045.50 | 58.1 | oem | | 4.15.0-1047.49 | 58.1 | aws | | 4.15.0-1047.51 | 58.1 | azure | | 4.15.0-1048.50 | 58.1 | aws | | 4.15.0-1049.54 | 58.1 | azure | | 4.15.0-1050.52 | 58.1 | aws | | 4.15.0-1050.55 | 58.1 | azure | | 4.15.0-1050.57 | 58.1 | oem | | 4.15.0-1051.53 | 58.1 | aws | | 4.15.0-1051.56 | 58.1 | azure | | 4.15.0-1052.57 | 58.1 | azure | | 4.15.0-1055.60 | 58.1 | azure | | 4.15.0-1056.61 | 58.1 | azure | | 4.15.0-1056.65 | 58.1 | oem | | 4.15.0-1057.62 | 58.1 | azure | | 4.15.0-1057.66 | 58.1 | oem | | 4.15.0-1059.64 | 58.1 | azure | | 5.0.0-1014.14~18.04.1 | 58.1 | azure | | 5.0.0-1016.17~18.04.1 | 58.1 | azure | | 5.0.0-1018.19~18.04.1 | 58.1 | azure | | 5.0.0-1020.21~18.04.1 | 58.1 | azure | Support Information: Kernels older than the levels listed below do not receive livepatch updates. Please upgrade your kernel as soon as possible. | Series | Version | Flavors | |------------------+------------------+--------------------------| | Ubuntu 18.04 LTS | 4.15.0-1039 | aws | | Ubuntu 16.04 LTS | 4.4.0-1083 | aws | | Ubuntu 18.04 LTS | 5.0.0-1000 | azure | | Ubuntu 16.04 LTS | 4.15.0-1047 | azure | | Ubuntu 18.04 LTS | 4.15.0-50 | generic lowlatency | | Ubuntu 16.04 LTS | 4.15.0-50 | generic lowlatency | | Ubuntu 14.04 LTS | 4.4.0-148 | generic lowlatency | | Ubuntu 18.04 LTS | 4.15.0-1038 | oem | | Ubuntu 16.04 LTS | 4.4.0-148 | generic lowlatency | References: CVE-2016-10905, CVE-2018-20856, CVE-2018-20961, CVE-2018-20976, CVE-2018-21008, CVE-2019-0136, CVE-2019-2054, CVE-2019-2181, CVE-2019-3846, CVE-2019-10126, CVE-2019-10207, CVE-2019-11477, CVE-2019-11478, CVE-2019-11833, CVE-2019-12614, CVE-2019-14283, CVE-2019-14284, CVE-2019-14814, CVE-2019-14815, CVE-2019-14816, CVE-2019-14821, CVE-2019-14835 -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce . 6.5) - 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. Bug Fix(es): * kernel-rt: update to the RHEL8.0.z batch#1 source tree (BZ#1704955) 4. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. The following packages have been upgraded to a later upstream version: redhat-release-virtualization-host (4.3.4), redhat-virtualization-host (4.3.4)

AFFECTED PRODUCTS