SUSE Security Update: Security update for Linux Kernel Live Patch 1 for SLE 12 SP2 ______________________________________________________________________________
Announcement ID: SUSE-SU-2017:0228-1 Rating: important References: #1012852 #1013543 #1014271 #1019079 Cross-References: CVE-2016-10088 CVE-2016-8632 CVE-2016-9576 CVE-2016-9794 Affected Products: SUSE Linux Enterprise Live Patching 12 ______________________________________________________________________________
An update that fixes four vulnerabilities is now available.
This update for the Linux Kernel 4.4.21-81 fixes several issues.
The following security bugs were fixed: - CVE-2016-10088: The sg implementation in the Linux kernel did not properly restrict write operations in situations where the KERNEL_DS option is set, 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, related to block/bsg.c and drivers/scsi/sg.c. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-9576 (bsc#1019079). - 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). before 4.8.14
To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product:
- SUSE Linux Enterprise Live Patching 12:
zypper in -t patch SUSE-SLE-Live-Patching-12-2017-110=1
To bring your system up-to-date, use "zypper patch".
- SUSE Linux Enterprise Live Patching 12 (x86_64):
https://www.suse.com/security/cve/CVE-2016-10088.html 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://bugzilla.suse.com/1012852 https://bugzilla.suse.com/1013543 https://bugzilla.suse.com/1014271 https://bugzilla.suse.com/1019079