Security update for the Linux Kernel

SUSE Security Update: Security update for the Linux Kernel
Announcement ID: SUSE-SU-2020:14442-1
Rating: important
References: #1159912 #1159913 #1162002 #1171218 #1171219 #1171220 #1172775 #1172999 #1173265 #1174462 #1174543
Cross-References:CVE-2019-5108 CVE-2020-0305 CVE-2020-10732 CVE-2020-10769 CVE-2020-10773 CVE-2020-12652 CVE-2020-12656 CVE-2020-13974 CVE-2020-14416
Affected Products:
  • SUSE Linux Enterprise Server 11-SP4-LTSS
  • SUSE Linux Enterprise Server 11-EXTRA
  • SUSE Linux Enterprise Debuginfo 11-SP4

An update that solves 9 vulnerabilities and has two fixes is now available.


The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2020-10773: Fixed a memory leak on s390/s390x, in the cmm_timeout_hander in file arch/s390/mm/cmm.c (bnc#1172999).
  • CVE-2020-14416: Fixed a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).
  • CVE-2020-13974: Fixed a integer overflow in drivers/tty/vt/keyboard.c, if k_ascii is called several times in a row (bnc#1172775).
  • CVE-2020-10732: A flaw was found in the implementation of Userspace core dumps. This flaw allowed an attacker with a local account to crash a trivial program and exfiltrate private kernel data (bnc#1171220).
  • CVE-2020-12656: Fixed a memory leak in gss_mech_free in the rpcsec_gss_krb5 implementation, caused by a lack of certain domain_release calls (bnc#1171219).
  • CVE-2020-0305: Fixed a possible use-after-free due to a race condition incdev_get of char_dev.c. This could lead to local escalation of privilege. User interaction is not needed for exploitation (bnc#1174462).
  • CVE-2020-10769: A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. This flaw allowed a local attacker with user privileges to cause a denial of service (bnc#1173265).
  • CVE-2020-12652: The __mptctl_ioctl function in drivers/message/fusion/mptctl.c allowed local users to hold an incorrect lock during the ioctl operation and trigger a race condition, i.e., a "double fetch" vulnerability (bnc#1171218).
  • CVE-2019-5108: Fixed a denial-of-service vulnerability in the wifi stack. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed (bnc#1159912).

The following non-security bugs were fixed:
  • Fix gcc-discovered error in zeroing a struct (bnc#680814)

Special Instructions and Notes:

Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE Security 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 Server 11-SP4-LTSS:
    zypper in -t patch slessp4-kernel-source-14442=1
  • SUSE Linux Enterprise Server 11-EXTRA:
    zypper in -t patch slexsp3-kernel-source-14442=1
  • SUSE Linux Enterprise Debuginfo 11-SP4:
    zypper in -t patch dbgsp4-kernel-source-14442=1

Package List:

  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586 ppc64 s390x x86_64):
    • kernel-default-3.0.101-108.117.1
    • kernel-default-base-3.0.101-108.117.1
    • kernel-default-devel-3.0.101-108.117.1
    • kernel-source-3.0.101-108.117.1
    • kernel-syms-3.0.101-108.117.1
    • kernel-trace-3.0.101-108.117.1
    • kernel-trace-base-3.0.101-108.117.1
    • kernel-trace-devel-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586 x86_64):
    • kernel-ec2-3.0.101-108.117.1
    • kernel-ec2-base-3.0.101-108.117.1
    • kernel-ec2-devel-3.0.101-108.117.1
    • kernel-xen-3.0.101-108.117.1
    • kernel-xen-base-3.0.101-108.117.1
    • kernel-xen-devel-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (s390x):
    • kernel-default-man-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (ppc64):
    • kernel-bigmem-3.0.101-108.117.1
    • kernel-bigmem-base-3.0.101-108.117.1
    • kernel-bigmem-devel-3.0.101-108.117.1
    • kernel-ppc64-3.0.101-108.117.1
    • kernel-ppc64-base-3.0.101-108.117.1
    • kernel-ppc64-devel-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586):
    • kernel-pae-3.0.101-108.117.1
    • kernel-pae-base-3.0.101-108.117.1
    • kernel-pae-devel-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 ia64 ppc64 s390x x86_64):
    • kernel-default-extra-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 x86_64):
    • kernel-xen-extra-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-EXTRA (x86_64):
    • kernel-trace-extra-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-EXTRA (ppc64):
    • kernel-ppc64-extra-3.0.101-108.117.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586):
    • kernel-pae-extra-3.0.101-108.117.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ppc64 s390x x86_64):
    • kernel-default-debuginfo-3.0.101-108.117.1
    • kernel-default-debugsource-3.0.101-108.117.1
    • kernel-trace-debuginfo-3.0.101-108.117.1
    • kernel-trace-debugsource-3.0.101-108.117.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 s390x x86_64):
    • kernel-default-devel-debuginfo-3.0.101-108.117.1
    • kernel-trace-devel-debuginfo-3.0.101-108.117.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):
    • kernel-ec2-debuginfo-3.0.101-108.117.1
    • kernel-ec2-debugsource-3.0.101-108.117.1
    • kernel-xen-debuginfo-3.0.101-108.117.1
    • kernel-xen-debugsource-3.0.101-108.117.1
    • kernel-xen-devel-debuginfo-3.0.101-108.117.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (ppc64):
    • kernel-bigmem-debuginfo-3.0.101-108.117.1
    • kernel-bigmem-debugsource-3.0.101-108.117.1
    • kernel-ppc64-debuginfo-3.0.101-108.117.1
    • kernel-ppc64-debugsource-3.0.101-108.117.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586):
    • kernel-pae-debuginfo-3.0.101-108.117.1
    • kernel-pae-debugsource-3.0.101-108.117.1
    • kernel-pae-devel-debuginfo-3.0.101-108.117.1