Security update for the Linux Kernel (Live Patch 4 for SLE 12 SP3)

Announcement ID: SUSE-SU-2017:3317-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2017-1000405 ( SUSE ): 5.7 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
  • CVE-2017-1000405 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2017-1000405 ( NVD ): 7.0 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2017-16939 ( SUSE ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2017-16939 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2017-16939 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise High Performance Computing 12 SP3
  • SUSE Linux Enterprise Live Patching 12-SP3
  • SUSE Linux Enterprise Server 12 SP3
  • SUSE Linux Enterprise Server for SAP Applications 12 SP3

An update that solves two vulnerabilities can now be installed.

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 update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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

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: