Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2020:14442-1
Rating:	important
References:	bsc#1159912 bsc#1159913 bsc#1162002 bsc#1171218 bsc#1171219 bsc#1171220 bsc#1172775 bsc#1172999 bsc#1173265 bsc#1174462 bsc#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
CVSS scores:	CVE-2019-5108 ( SUSE ): 7.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVE-2019-5108 ( NVD ): 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-0305 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-0305 ( NVD ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-10732 ( SUSE ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2020-10732 ( NVD ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2020-10769 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-10769 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-10773 ( SUSE ): 2.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2020-10773 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVE-2020-12652 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-12652 ( NVD ): 4.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2020-12656 ( SUSE ): 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2020-12656 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-13974 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-13974 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-14416 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-14416 ( NVD ): 4.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
Affected Products:	SUSE Linux Enterprise Server 11 SP4 SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4

An update that solves nine vulnerabilities and has two security fixes can now be installed.

Description:

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 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 11-SP4
  zypper in -t patch slessp4-kernel-source-14442=1
• SUSE Linux Enterprise Server 11 SP4
  zypper in -t patch slessp4-kernel-source-14442=1

Package List:

• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (s390x x86_64 i586 ppc64 nosrc)
  • kernel-default-3.0.101-108.117.1
  • kernel-trace-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64 s390x x86_64 i586)
  • kernel-trace-devel-3.0.101-108.117.1
  • kernel-trace-base-3.0.101-108.117.1
  • kernel-syms-3.0.101-108.117.1
  • kernel-source-3.0.101-108.117.1
  • kernel-default-base-3.0.101-108.117.1
  • kernel-default-devel-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (nosrc x86_64 i586)
  • kernel-ec2-3.0.101-108.117.1
  • kernel-xen-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (x86_64 i586)
  • kernel-xen-base-3.0.101-108.117.1
  • kernel-xen-devel-3.0.101-108.117.1
  • kernel-ec2-devel-3.0.101-108.117.1
  • kernel-ec2-base-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (nosrc i586)
  • kernel-pae-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (i586)
  • kernel-pae-devel-3.0.101-108.117.1
  • kernel-pae-base-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64 nosrc)
  • kernel-ppc64-3.0.101-108.117.1
  • kernel-bigmem-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64)
  • kernel-bigmem-devel-3.0.101-108.117.1
  • kernel-bigmem-base-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 11-SP4 (s390x)
  • kernel-default-man-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (s390x x86_64 i586 ppc64 nosrc)
  • kernel-default-3.0.101-108.117.1
  • kernel-trace-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64 s390x x86_64 i586)
  • kernel-trace-devel-3.0.101-108.117.1
  • kernel-trace-base-3.0.101-108.117.1
  • kernel-syms-3.0.101-108.117.1
  • kernel-source-3.0.101-108.117.1
  • kernel-default-base-3.0.101-108.117.1
  • kernel-default-devel-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (nosrc x86_64 i586)
  • kernel-ec2-3.0.101-108.117.1
  • kernel-xen-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (x86_64 i586)
  • kernel-xen-base-3.0.101-108.117.1
  • kernel-xen-devel-3.0.101-108.117.1
  • kernel-ec2-devel-3.0.101-108.117.1
  • kernel-ec2-base-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (nosrc i586)
  • kernel-pae-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (i586)
  • kernel-pae-devel-3.0.101-108.117.1
  • kernel-pae-base-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64 nosrc)
  • kernel-ppc64-3.0.101-108.117.1
  • kernel-bigmem-3.0.101-108.117.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64)
  • kernel-bigmem-devel-3.0.101-108.117.1
  • kernel-bigmem-base-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 (s390x)
  • kernel-default-man-3.0.101-108.117.1

References:

• https://www.suse.com/security/cve/CVE-2019-5108.html
• https://www.suse.com/security/cve/CVE-2020-0305.html
• https://www.suse.com/security/cve/CVE-2020-10732.html
• https://www.suse.com/security/cve/CVE-2020-10769.html
• https://www.suse.com/security/cve/CVE-2020-10773.html
• https://www.suse.com/security/cve/CVE-2020-12652.html
• https://www.suse.com/security/cve/CVE-2020-12656.html
• https://www.suse.com/security/cve/CVE-2020-13974.html
• https://www.suse.com/security/cve/CVE-2020-14416.html
• https://bugzilla.suse.com/show_bug.cgi?id=1159912
• https://bugzilla.suse.com/show_bug.cgi?id=1159913
• https://bugzilla.suse.com/show_bug.cgi?id=1162002
• https://bugzilla.suse.com/show_bug.cgi?id=1171218
• https://bugzilla.suse.com/show_bug.cgi?id=1171219
• https://bugzilla.suse.com/show_bug.cgi?id=1171220
• https://bugzilla.suse.com/show_bug.cgi?id=1172775
• https://bugzilla.suse.com/show_bug.cgi?id=1172999
• https://bugzilla.suse.com/show_bug.cgi?id=1173265
• https://bugzilla.suse.com/show_bug.cgi?id=1174462
• https://bugzilla.suse.com/show_bug.cgi?id=1174543