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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0914 SUSE-SU-2019:0672-1 Security update for the Linux Kernel (Live Patch 31 for SLE 12 SP1) 21 March 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux kernel Publisher: SUSE Operating System: SUSE Impact/Access: Root Compromise -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-9213 CVE-2019-7221 CVE-2019-6974 CVE-2018-5391 Reference: ESB-2019.0675 ESB-2018.3654 ESB-2018.3640 ESB-2018.3590 Original Bulletin: https://www.suse.com/support/update/announcement/2019/suse-su-20190672-1.html - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for the Linux Kernel (Live Patch 31 for SLE 12 SP1) ______________________________________________________________________________ Announcement ID: SUSE-SU-2019:0672-1 Rating: important References: #1103098 #1124729 #1124734 #1128378 Cross-References: CVE-2018-5391 CVE-2019-6974 CVE-2019-7221 CVE-2019-9213 Affected Products: SUSE Linux Enterprise Server for SAP 12-SP1 SUSE Linux Enterprise Server 12-SP1-LTSS ______________________________________________________________________________ An update that fixes four vulnerabilities is now available. Description: This update for the Linux Kernel 3.12.74-60_64_104 fixes several issues. The following security issues were fixed: o CVE-2019-9213: Expand_downwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task (bsc#1128378). o CVE-2019-7221: Fixed a user-after-free vulnerability in the KVM hypervisor related to the emulation of a preemption timer, allowing an guest user/ process to crash the host kernel. (bsc#1124734). o CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandled reference counting because of a race condition, leading to a use-after-free (bsc#1124729). o CVE-2018-5391: The Linux kernel was vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker might have caused a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: o SUSE Linux Enterprise Server for SAP 12-SP1: zypper in -t patch SUSE-SLE-SAP-12-SP1-2019-668=1 SUSE-SLE-SAP-12-SP1-2019-669=1 SUSE-SLE-SAP-12-SP1-2019-670=1 SUSE-SLE-SAP-12-SP1-2019-671=1 SUSE-SLE-SAP-12-SP1-2019-672=1 SUSE-SLE-SAP-12-SP1-2019-673=1 SUSE-SLE-SAP-12-SP1-2019-674=1 o SUSE Linux Enterprise Server 12-SP1-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-SP1-2019-668=1 SUSE-SLE-SERVER-12-SP1-2019-669=1 SUSE-SLE-SERVER-12-SP1-2019-670=1 SUSE-SLE-SERVER-12-SP1-2019-671=1 SUSE-SLE-SERVER-12-SP1-2019-672=1 SUSE-SLE-SERVER-12-SP1-2019-673=1 SUSE-SLE-SERVER-12-SP1-2019-674=1 Package List: o SUSE Linux Enterprise Server for SAP 12-SP1 (x86_64): kgraft-patch-3_12_74-60_64_104-default-6-2.1 kgraft-patch-3_12_74-60_64_104-xen-6-2.1 kgraft-patch-3_12_74-60_64_107-default-6-2.1 kgraft-patch-3_12_74-60_64_107-xen-6-2.1 kgraft-patch-3_12_74-60_64_85-default-12-2.1 kgraft-patch-3_12_74-60_64_85-xen-12-2.1 kgraft-patch-3_12_74-60_64_88-default-10-2.1 kgraft-patch-3_12_74-60_64_88-xen-10-2.1 kgraft-patch-3_12_74-60_64_93-default-9-2.1 kgraft-patch-3_12_74-60_64_93-xen-9-2.1 kgraft-patch-3_12_74-60_64_96-default-9-2.1 kgraft-patch-3_12_74-60_64_96-xen-9-2.1 kgraft-patch-3_12_74-60_64_99-default-8-2.1 kgraft-patch-3_12_74-60_64_99-xen-8-2.1 o SUSE Linux Enterprise Server 12-SP1-LTSS (x86_64): kgraft-patch-3_12_74-60_64_104-default-6-2.1 kgraft-patch-3_12_74-60_64_104-xen-6-2.1 kgraft-patch-3_12_74-60_64_107-default-6-2.1 kgraft-patch-3_12_74-60_64_107-xen-6-2.1 kgraft-patch-3_12_74-60_64_85-default-12-2.1 kgraft-patch-3_12_74-60_64_85-xen-12-2.1 kgraft-patch-3_12_74-60_64_88-default-10-2.1 kgraft-patch-3_12_74-60_64_88-xen-10-2.1 kgraft-patch-3_12_74-60_64_93-default-9-2.1 kgraft-patch-3_12_74-60_64_93-xen-9-2.1 kgraft-patch-3_12_74-60_64_96-default-9-2.1 kgraft-patch-3_12_74-60_64_96-xen-9-2.1 kgraft-patch-3_12_74-60_64_99-default-8-2.1 kgraft-patch-3_12_74-60_64_99-xen-8-2.1 References: o https://www.suse.com/security/cve/CVE-2018-5391.html o https://www.suse.com/security/cve/CVE-2019-6974.html o https://www.suse.com/security/cve/CVE-2019-7221.html o https://www.suse.com/security/cve/CVE-2019-9213.html o https://bugzilla.suse.com/1103098 o https://bugzilla.suse.com/1124729 o https://bugzilla.suse.com/1124734 o https://bugzilla.suse.com/1128378 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXJLx9maOgq3Tt24GAQhDGBAAzCNZH11b7qrVMhlbLSgCjAexDLmCCaUg DQuCzBmuJYuNe4KIs9zMyfN5NBNrRRCpwQGMCyx5PFSsEyDlhRKSifXP6GUExATT 9MDW+XbfxmD56kilBrtkuUJFcV9rljgbG8DQW82QmNRhnFmAQmkSDt4bWjMZJNwG 1f7kGUq13CwEaqTgukoFfAdiMl9j239wKO2kdO+QNNBmU4+ahuYudz/7H0ta9+gV iw+DcMjt8ctk7y5xLJmQhdqgmA5terqtJ0hzxpIdgJSFJClVCzUzbc/eND8dG+a1 7mDvDe+FD59wAPhKH8R+E351TSHgZ0XQuVBYkN26Bqr/UycMC53BXiw7BxgCBWFl gnX2wtsjut9qGiLHr3NdXAVVaijNXpHD62rayOVxMNZ+GPRaK/W0xZfnbI9o7sNj Und4soJilS0bzaJaSy9SX+MotyHzu2XWgOYICCNJMgqUCMvwtP9Bwgrj+jnrcQwY hhDl282YFKiDJMmsnS2y/a3VbV2S8zun7ZEK9MwVLswlP15IWhfBX2J2UEX5hxBM gxZS0p7n5bNcw6verbe1xWXTRmIPSHWI7rLQfYqWdER7p83HToLgygUaInD3nvFX yXDN5S8oshn3AcX4sejZ0wuqDys/ETh9IOuUyuMas99Bcp8mCfcz1rJvurnQLPoY 0uXg/iR/TNk= =q++6 -----END PGP SIGNATURE-----