SUSE Security Update: Security update for Linux Kernel Live Patch 11 for SLE 12 ______________________________________________________________________________

Announcement ID: SUSE-SU-2017:0268-1 Rating: important References: #1012852 #1013543 #1013604 #1014271 #1017589

Cross-References: CVE-2016-8632 CVE-2016-9576 CVE-2016-9794 CVE-2016-9806 Affected Products: SUSE Linux Enterprise Server for SAP 12 SUSE Linux Enterprise Server 12-LTSS ______________________________________________________________________________

An update that solves four vulnerabilities and has one errata is now available.

Description:

This update for the Linux Kernel 3.12.51-52_39 fixes several issues.

The following security bugs were fixed: - CVE-2016-9806: Race condition in the netlink_dump function in net/netlink/af_netlink.c in the Linux kernel allowed local users to cause a denial of service (double free) or possibly have unspecified other impact via a crafted application that made sendmsg system calls, leading to a free operation associated with a new dump that started earlier than anticipated (bsc#1017589). - CVE-2016-9794: Race condition in the snd_pcm_period_elapsed function in sound/core/pcm_lib.c in the ALSA subsystem in the Linux kernel allowed local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted SNDRV_PCM_TRIGGER_START command (bsc#1013543). - CVE-2016-8632: The tipc_msg_build function in net/tipc/msg.c in the Linux kernel did not validate the relationship between the minimum fragment length and the maximum packet size, which allowed local users to gain privileges or cause a denial of service (heap-based buffer overflow) by leveraging the CAP_NET_ADMIN capability (bsc#1012852). - CVE-2016-9576: The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel did not properly restrict the type of iterator, which allowed local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device (bsc#1014271).

Patch Instructions:

To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product:

- SUSE Linux Enterprise Server for SAP 12:

zypper in -t patch SUSE-SLE-SAP-12-2017-141=1

- SUSE Linux Enterprise Server 12-LTSS:

zypper in -t patch SUSE-SLE-SERVER-12-2017-141=1

To bring your system up-to-date, use "zypper patch".

Package List:

- SUSE Linux Enterprise Server for SAP 12 (x86_64):

kgraft-patch-3_12_51-52_39-default-7-2.1 kgraft-patch-3_12_51-52_39-xen-7-2.1

- SUSE Linux Enterprise Server 12-LTSS (x86_64):

kgraft-patch-3_12_51-52_39-default-7-2.1 kgraft-patch-3_12_51-52_39-xen-7-2.1

References:

https://www.suse.com/security/cve/CVE-2016-8632.html https://www.suse.com/security/cve/CVE-2016-9576.html https://www.suse.com/security/cve/CVE-2016-9794.html https://www.suse.com/security/cve/CVE-2016-9806.html https://bugzilla.suse.com/1012852 https://bugzilla.suse.com/1013543 https://bugzilla.suse.com/1013604 https://bugzilla.suse.com/1014271 https://bugzilla.suse.com/1017589