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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2436 Security update for the Linux Kernel 20 August 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: SUSE Operating System: SUSE Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Access Privileged Data -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-10853 CVE-2018-3646 CVE-2017-18344 CVE-2017-17053 CVE-2017-11600 Reference: ESB-2018.2416 ESB-2018.2404 ESB-2018.2401 ESB-2018.2398 ESB-2018.2380 Original Bulletin: https://www.suse.com/support/update/announcement/2018/suse-su-20182413-1.html https://www.suse.com/support/update/announcement/2018/suse-su-20182416-1.html https://www.suse.com/support/update/announcement/2018/suse-su-20182414-1.html Comment: This bulletin contains three (3) SUSE security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 12 SP3) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:2413-1 Rating: important References: #1096564 #1096679 #1097108 #1099306 #1103203 Cross-References: CVE-2017-11600 CVE-2017-17053 CVE-2017-18344 CVE-2018-10853 CVE-2018-3646 Affected Products: SUSE Linux Enterprise Live Patching 12-SP3 ______________________________________________________________________________ An update that fixes 5 vulnerabilities is now available. Description: This update for the Linux Kernel 4.4.82-6_9 fixes several issues. The following security issues were fixed: - CVE-2018-3646: Local attackers in virtualized guest systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data, even from other virtual machines or the host system (bsc#1099306). - CVE-2017-18344: The timer_create syscall implementation in kernel/time/posix-timers.c didn't properly validate the sigevent->sigev_notify field, which lead to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allowed userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE) (bsc#1103203). before 4.14.8 - CVE-2017-17053: The init_new_context function in arch/x86/include/asm/mmu_context.h did not correctly handle errors from LDT table allocation when forking a new process, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. This vulnerability only affected kernels built with CONFIG_MODIFY_LDT_SYSCALL=y (bsc#1096679). - CVE-2017-11600: net/xfrm/xfrm_policy.c did not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allowed local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message (bsc#1096564) - CVE-2018-10853: A flaw was found in kvm. In which certain instructions such as sgdt/sidt call segmented_write_std didn't propagate access correctly. As such, during userspace induced exception, the guest can incorrectly assume that the exception happened in the kernel and panic. (bsc#1097108). 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: - SUSE Linux Enterprise Live Patching 12-SP3: zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-1669=1 SUSE-SLE-Live-Patching-12-SP3-2018-1670=1 SUSE-SLE-Live-Patching-12-SP3-2018-1671=1 Package List: - SUSE Linux Enterprise Live Patching 12-SP3 (x86_64): kgraft-patch-4_4_82-6_3-default-11-2.1 kgraft-patch-4_4_82-6_3-default-debuginfo-11-2.1 kgraft-patch-4_4_82-6_6-default-10-2.1 kgraft-patch-4_4_82-6_6-default-debuginfo-10-2.1 kgraft-patch-4_4_82-6_9-default-10-2.1 kgraft-patch-4_4_82-6_9-default-debuginfo-10-2.1 References: https://www.suse.com/security/cve/CVE-2017-11600.html https://www.suse.com/security/cve/CVE-2017-17053.html https://www.suse.com/security/cve/CVE-2017-18344.html https://www.suse.com/security/cve/CVE-2018-10853.html https://www.suse.com/security/cve/CVE-2018-3646.html https://bugzilla.suse.com/1096564 https://bugzilla.suse.com/1096679 https://bugzilla.suse.com/1097108 https://bugzilla.suse.com/1099306 https://bugzilla.suse.com/1103203 _______________________________________________ ================================================================================ SUSE Security Update: Security update for the Linux Kernel (Live Patch 10 for SLE 12 SP3) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:2414-1 Rating: important References: #1097108 #1099306 Cross-References: CVE-2018-10853 CVE-2018-3646 Affected Products: SUSE Linux Enterprise Live Patching 12-SP3 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for the Linux Kernel 4.4.120-94_17 fixes several issues. The following security issues were fixed: - CVE-2018-3646: Local attackers in virtualized guest systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data, even from other virtual machines or the host system (bsc#1099306). - CVE-2018-10853: A flaw was found in kvm. In which certain instructions such as sgdt/sidt call segmented_write_std didn't propagate access correctly. As such, during userspace induced exception, the guest can incorrectly assume that the exception happened in the kernel and panic. (bsc#1097108). 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: - SUSE Linux Enterprise Live Patching 12-SP3: zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-1678=1 SUSE-SLE-Live-Patching-12-SP3-2018-1679=1 SUSE-SLE-Live-Patching-12-SP3-2018-1680=1 SUSE-SLE-Live-Patching-12-SP3-2018-1681=1 Package List: - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64): kgraft-patch-4_4_120-94_17-default-5-2.1 kgraft-patch-4_4_120-94_17-default-debuginfo-5-2.1 kgraft-patch-4_4_126-94_22-default-5-2.1 kgraft-patch-4_4_126-94_22-default-debuginfo-5-2.1 kgraft-patch-4_4_131-94_29-default-3-2.1 kgraft-patch-4_4_131-94_29-default-debuginfo-3-2.1 kgraft-patch-4_4_132-94_33-default-3-2.1 kgraft-patch-4_4_132-94_33-default-debuginfo-3-2.1 References: https://www.suse.com/security/cve/CVE-2018-10853.html https://www.suse.com/security/cve/CVE-2018-3646.html https://bugzilla.suse.com/1097108 https://bugzilla.suse.com/1099306 _______________________________________________ ============================================================================== SUSE Security Update: Security update for the Linux Kernel (Live Patch 9 for SLE 12 SP3) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:2416-1 Rating: important References: #1097108 #1099306 #1103203 Cross-References: CVE-2017-18344 CVE-2018-10853 CVE-2018-3646 Affected Products: SUSE Linux Enterprise Server for SAP 12-SP2 SUSE Linux Enterprise Server 12-SP2-LTSS SUSE Linux Enterprise Live Patching 12-SP3 ______________________________________________________________________________ An update that fixes three vulnerabilities is now available. Description: This update for the Linux Kernel 4.4.114-94_14 fixes several issues. The following security issues were fixed: - CVE-2018-3646: Local attackers in virtualized guest systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data, even from other virtual machines or the host system (bsc#1099306). - CVE-2017-18344: The timer_create syscall implementation in kernel/time/posix-timers.c didn't properly validate the sigevent->sigev_notify field, which lead to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allowed userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE) (bsc#1103203). before 4.14.8 - CVE-2018-10853: A flaw was found in kvm. In which certain instructions such as sgdt/sidt call segmented_write_std didn't propagate access correctly. As such, during userspace induced exception, the guest can incorrectly assume that the exception happened in the kernel and panic. (bsc#1097108). 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: - SUSE Linux Enterprise Server for SAP 12-SP2: zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-1667=1 SUSE-SLE-SAP-12-SP2-2018-1668=1 - SUSE Linux Enterprise Server 12-SP2-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-1667=1 SUSE-SLE-SERVER-12-SP2-2018-1668=1 - SUSE Linux Enterprise Live Patching 12-SP3: zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-1672=1 SUSE-SLE-Live-Patching-12-SP3-2018-1673=1 SUSE-SLE-Live-Patching-12-SP3-2018-1674=1 SUSE-SLE-Live-Patching-12-SP3-2018-1675=1 SUSE-SLE-Live-Patching-12-SP3-2018-1676=1 SUSE-SLE-Live-Patching-12-SP3-2018-1677=1 Package List: - SUSE Linux Enterprise Server for SAP 12-SP2 (x86_64): kgraft-patch-4_4_103-92_53-default-8-2.1 kgraft-patch-4_4_103-92_56-default-8-2.1 - SUSE Linux Enterprise Server 12-SP2-LTSS (x86_64): kgraft-patch-4_4_103-92_53-default-8-2.1 kgraft-patch-4_4_103-92_56-default-8-2.1 - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64): kgraft-patch-4_4_103-6_33-default-8-2.1 kgraft-patch-4_4_103-6_33-default-debuginfo-8-2.1 kgraft-patch-4_4_103-6_38-default-8-2.1 kgraft-patch-4_4_103-6_38-default-debuginfo-8-2.1 kgraft-patch-4_4_114-94_11-default-6-2.1 kgraft-patch-4_4_114-94_11-default-debuginfo-6-2.1 kgraft-patch-4_4_114-94_14-default-6-2.1 kgraft-patch-4_4_114-94_14-default-debuginfo-6-2.1 kgraft-patch-4_4_92-6_30-default-8-2.1 kgraft-patch-4_4_92-6_30-default-debuginfo-8-2.1 - SUSE Linux Enterprise Live Patching 12-SP3 (x86_64): kgraft-patch-4_4_92-6_18-default-9-2.1 kgraft-patch-4_4_92-6_18-default-debuginfo-9-2.1 References: https://www.suse.com/security/cve/CVE-2017-18344.html https://www.suse.com/security/cve/CVE-2018-10853.html https://www.suse.com/security/cve/CVE-2018-3646.html https://bugzilla.suse.com/1097108 https://bugzilla.suse.com/1099306 https://bugzilla.suse.com/1103203 _______________________________________________ - --------------------------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 iQIVAwUBW3pTIGaOgq3Tt24GAQiEmBAAg1gebkcNBn+5pDIMkQLjkOBXfoPldaL0 XuDw6vBZP4HLzk/5JaRTEPRkissgbiKDN2AXlrkeDU+u8fo8Y8eCfzZXLQHSDLR+ 6WZ4NOhAP9PzTvJw9AWE+a7gzwue6EQZbZv0mZv/EN/V+vAVoA3r4wqm+BWH8PYO YF6LJFb07MA1bMA4E+7sdktclBUY9JboPXO/ovZBY91315mi4z4cAvQeSISSpTSN flVy2Gryx51lKWHsrT0s5iJNhnHlC4aMUMDWxKihSijZldo5EcGb5CIRiGoaoGAY ulYBrSx8B+Co9FTEzIZ+fvGcoMGQo0OTuBBk5B73nsuQbA2Cf9KXkN5Qp8/0fw8K 5fmBk+n2WqWgQRvu2X/JidnpeGmf6ZB75cvwriQazjvhEpuYX6VJSa5eoOT/1KWo 2x9iUMqolxBP4/UttAQEZipA+6QmA6jW6FW2qQpskpDpl5Lz5GLxMvYVYKMlFAp0 AcJY8ehRwtlIfmG/Ot+oLEYJlbhESOXPUfirphE4fetZuyUL/0mKBWK8NGeFiuQk w0Y8lJYyWYSbIsRfUnGOgeUSFNvdnund4uL/KKBRw0bKnVvHoCIKXB3QVAlAdbfC zCHZGEkqwSptx9PF3eZRaC5UASD7UVnc5rAqsS6G2Q4mZptiJu03c+WoDtQOQrKL UL3GaXjiBW4= =wp3F -----END PGP SIGNATURE-----