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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2285 SUSE-SU-2019:1692-1 Security update for the Linux Kernel 25 June 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux kernel Publisher: SUSE Operating System: SUSE Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-11884 CVE-2019-11833 CVE-2019-11479 CVE-2019-11478 CVE-2019-11477 CVE-2019-11190 CVE-2019-5489 CVE-2019-3846 CVE-2018-17972 Reference: ESB-2019.2256 ESB-2019.2231 ESB-2019.2185 ESB-2019.2183 ESB-2019.2182 ESB-2019.2171 Original Bulletin: https://www.suse.com/support/update/announcement/2019/suse-su-20191692-1.html - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for the Linux Kernel ______________________________________________________________________________ Announcement ID: SUSE-SU-2019:1692-1 Rating: important References: #1090078 #1110785 #1113769 #1120843 #1120885 #1125580 #1125931 #1131543 #1131587 #1132374 #1132472 #1134848 #1135281 #1136424 #1136446 #1137586 Cross-References: CVE-2018-17972 CVE-2019-11190 CVE-2019-11477 CVE-2019-11478 CVE-2019-11479 CVE-2019-11833 CVE-2019-11884 CVE-2019-3846 CVE-2019-5489 Affected Products: SUSE Linux Enterprise Server 12-LTSS SUSE Linux Enterprise Module for Public Cloud 12 ______________________________________________________________________________ An update that solves 9 vulnerabilities and has 7 fixes is now available. Description: The SUSE Linux Enterprise 12 kernel version 3.12.61 was updated to receive various security and bugfixes. The following security bugs were fixed: o CVE-2019-11477: A sequence of SACKs may have been crafted by a remote attacker such that one can trigger an integer overflow, leading to a kernel panic. (bsc#1137586). o CVE-2019-11478: It was possible to send a crafted sequence of SACKs which would fragment the TCP retransmission queue. A remote attacker may have been able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection. o CVE-2019-11479: It was possible to send a crafted sequence of SACKs which would fragment the RACK send map. A remote attacker may have been able to further exploit the fragmented send map to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection. This would have resulted in excess resource consumption due to low mss values. o CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network. (bnc#1136424) o CVE-2019-5489: The mincore() implementation in mm/mincore.c in the Linux kernel allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may have been possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server. (bnc#1120843) o CVE-2019-11833: fs/ext4/extents.c in the Linux kernel did not zero out the unused memory region in the extent tree block, which might have allowed local users to obtain sensitive information by reading uninitialized data in the filesystem. (bnc#1135281) o CVE-2019-11190: The Linux kernel allowed local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. (bnc#1131543) o CVE-2019-11884: The do_hidp_sock_ioctl function in net/bluetooth/hidp/ sock.c in the Linux kernel allowed a local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command, because a name field may not end with a '\0' character. (bnc#1134848) o CVE-2018-17972: An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel It did not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents. (bnc# 1110785) The following non-security bugs were fixed: o kabi: drop LINUX_MIB_TCPWQUEUETOOBIG snmp counter (bsc#1137586). o lib: add "on"/"off" support to strtobool (bsc#1125931). o powerpc/tm: Add commandline option to disable hardware transactional memory (bsc#1125580). o powerpc/tm: Add TM Unavailable Exception (bsc#1125580). o powerpc/tm: Flip the HTM switch default to disabled (bsc#1125580). o powerpc/vdso32: fix CLOCK_MONOTONIC on PPC64 (bsc#1131587). o powerpc/vdso64: Fix CLOCK_MONOTONIC inconsistencies across Y2038 (bsc# 1131587). o tcp: add tcp_min_snd_mss sysctl (bsc#1137586). o tcp: enforce tcp_min_snd_mss in tcp_mtu_probing() (bsc#1137586). o tcp: limit payload size of sacked skbs (bsc#1137586). o tcp: tcp_fragment() should apply sane memory limits (bsc#1137586). Special Instructions and Notes: Please reboot the system after installing this update. 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 12-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-2019-1692=1 o SUSE Linux Enterprise Module for Public Cloud 12: zypper in -t patch SUSE-SLE-Module-Public-Cloud-12-2019-1692=1 Package List: o SUSE Linux Enterprise Server 12-LTSS (ppc64le s390x x86_64): kernel-default-3.12.61-52.154.1 kernel-default-base-3.12.61-52.154.1 kernel-default-base-debuginfo-3.12.61-52.154.1 kernel-default-debuginfo-3.12.61-52.154.1 kernel-default-debugsource-3.12.61-52.154.1 kernel-default-devel-3.12.61-52.154.1 kernel-syms-3.12.61-52.154.1 o SUSE Linux Enterprise Server 12-LTSS (noarch): kernel-devel-3.12.61-52.154.1 kernel-macros-3.12.61-52.154.1 kernel-source-3.12.61-52.154.1 o SUSE Linux Enterprise Server 12-LTSS (x86_64): kernel-xen-3.12.61-52.154.1 kernel-xen-base-3.12.61-52.154.1 kernel-xen-base-debuginfo-3.12.61-52.154.1 kernel-xen-debuginfo-3.12.61-52.154.1 kernel-xen-debugsource-3.12.61-52.154.1 kernel-xen-devel-3.12.61-52.154.1 kgraft-patch-3_12_61-52_154-default-1-1.5.1 kgraft-patch-3_12_61-52_154-xen-1-1.5.1 o SUSE Linux Enterprise Server 12-LTSS (s390x): kernel-default-man-3.12.61-52.154.1 o SUSE Linux Enterprise Module for Public Cloud 12 (x86_64): kernel-ec2-3.12.61-52.154.1 kernel-ec2-debuginfo-3.12.61-52.154.1 kernel-ec2-debugsource-3.12.61-52.154.1 kernel-ec2-devel-3.12.61-52.154.1 kernel-ec2-extra-3.12.61-52.154.1 kernel-ec2-extra-debuginfo-3.12.61-52.154.1 References: o https://www.suse.com/security/cve/CVE-2018-17972.html o https://www.suse.com/security/cve/CVE-2019-11190.html o https://www.suse.com/security/cve/CVE-2019-11477.html o https://www.suse.com/security/cve/CVE-2019-11478.html o https://www.suse.com/security/cve/CVE-2019-11479.html o https://www.suse.com/security/cve/CVE-2019-11833.html o https://www.suse.com/security/cve/CVE-2019-11884.html o https://www.suse.com/security/cve/CVE-2019-3846.html o https://www.suse.com/security/cve/CVE-2019-5489.html o https://bugzilla.suse.com/1090078 o https://bugzilla.suse.com/1110785 o https://bugzilla.suse.com/1113769 o https://bugzilla.suse.com/1120843 o https://bugzilla.suse.com/1120885 o https://bugzilla.suse.com/1125580 o https://bugzilla.suse.com/1125931 o https://bugzilla.suse.com/1131543 o https://bugzilla.suse.com/1131587 o https://bugzilla.suse.com/1132374 o https://bugzilla.suse.com/1132472 o https://bugzilla.suse.com/1134848 o https://bugzilla.suse.com/1135281 o https://bugzilla.suse.com/1136424 o https://bugzilla.suse.com/1136446 o https://bugzilla.suse.com/1137586 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXRGlpGaOgq3Tt24GAQiLcw/9E4J3ruu7ObtdAb5Hk3r3AHzsTmiE28ud KKDttacwn64L+GJ/Ih+CrBlQiGM60Qswv7H2z8LBv7FupUdnYQTuhtfe3Ji2H3Q5 iLtcdyMiBnNKq4i4SRZUD54lYy+6/RW70EGuSegOIngqv9ks/sKnpHPcUCk17eey 7Xw5f8GhmP0167P+rYk/t4oiGK+afuxjpdRy/R4GyO99Sj11UD1Ii4KCSC1tCVaA hVD1Z4XReo8q/g7nHxBGG1M5D4MKmpvUKe5dB9s9HtWqEDgOCLjvD675JOJAbo4q olSdePxD1IApUP9crlfZfh/BpLnosQTLHG/VF6EC5aTtm7k8XA/NX/WsVMc1ve4q UlcEM5Dkl03OBX1svuvsJ7B36EhL8SRo9A1u/6XOy0tb3RqMJ2CaNz0mDh3kXogm oWCkUgKYlfe0i0I9TNKaQXoUMOw+xyeRCUHEAykX/40NC/0EaE4ScQChgHaumOLH qq3VItgSA/EkY+9OPqRfC/AQLoHAptikEPAYXQHEo2X9H3AFTCj4csjUXwM0Sekq dlWfvr7gJSxo3XP/4zLI0EstC+UrWyoOgA9FP5GBBB9rXCUhP6CkLAq5eEX0YGBs 9jsbocmxd/qEb1pgNPdhiTiPROnjtxScd59UgBIGiSgXCIARGHAZgX6uv+cUJn7R 0KG5/WZhSpU= =gOkE -----END PGP SIGNATURE-----