SUSE SLES12 Security Update : kernel (SUSE-SU-2017:0267-1)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote SUSE host is missing one or more security updates.

Description :

This update for the Linux Kernel 3.12.60-52_60 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-2016-9576: 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).

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

See also :

https://bugzilla.suse.com/1013543
https://bugzilla.suse.com/1013604
https://bugzilla.suse.com/1014271
https://bugzilla.suse.com/1017589
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
http://www.nessus.org/u?c39673e0

Solution :

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-12-2017-142=1

SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-2017-142=1

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

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: SuSE Local Security Checks

Nessus Plugin ID: 96761 ()

Bugtraq ID:

CVE ID: CVE-2016-9576
CVE-2016-9794
CVE-2016-9806

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