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[security-announce] SUSE-SU-2017:3317-1: important: Security update for the Linux Kernel (Live Patch 4 for SLE 12 SP3)
SUSE Security Update: Security update for the Linux Kernel (Live Patch 4 for
SLE 12 SP3)
______________________________________________________________________________

Announcement ID: SUSE-SU-2017:3317-1
Rating: important
References: #1069708 #1070307
Cross-References: CVE-2017-1000405 CVE-2017-16939
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 4.4.90-6_12 fixes several issues.

The following security issues were fixed:

- CVE-2017-1000405: Problematic use of pmd_mkdirty() in the touch_pmd()
function allowed users to overwrite read-only huge pages (e.g. the zero
huge page and sealed shmem files) (bsc#1070307).
- CVE-2017-16939: The XFRM dump policy implementation in
net/xfrm/xfrm_user.c kernel allowed local users to gain privileges or
cause a denial of service (use-after-free) via a crafted SO_RCVBUF
setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink
messages (bsc#1069708).


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 Live Patching 12-SP3:

zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2017-2073=1

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


Package List:

- SUSE Linux Enterprise Live Patching 12-SP3 (x86_64):

kgraft-patch-4_4_92-6_18-default-2-2.1
kgraft-patch-4_4_92-6_18-default-debuginfo-2-2.1


References:

https://www.suse.com/security/cve/CVE-2017-1000405.html
https://www.suse.com/security/cve/CVE-2017-16939.html
https://bugzilla.suse.com/1069708
https://bugzilla.suse.com/1070307

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