SUSE-SU-2021:1248-1: important: Security update for the Linux Kernel

Fri Apr 16 16:31:49 UTC 2021

   SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:1248-1
Rating:             important
References:         #1065729 #1113295 #1178181 #1181507 #1183405 
                    #1183755 #1184120 #1184170 #1184391 #1184393 
                    #1184397 #1184494 #1184511 #1184583 
Cross-References:   CVE-2020-25670 CVE-2020-25671 CVE-2020-25672
                    CVE-2020-25673 CVE-2020-36311 CVE-2021-20219
                    CVE-2021-29154 CVE-2021-30002 CVE-2021-3483

CVSS scores:
                    CVE-2020-25670 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2020-25671 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2020-25672 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2020-25673 (SUSE): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
                    CVE-2020-36311 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-20219 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-29154 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-29154 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-30002 (NVD) : 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise Server 12-SP5
______________________________________________________________________________

   An update that solves 9 vulnerabilities and has 5 fixes is
   now available.

Description:

   The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive
   various security and bugfixes.

   The following security bugs were fixed:

   - CVE-2020-25670, CVE-2020-25671, CVE-2020-25672, CVE-2020-25673: Fixed
     multiple bugs in NFC subsytem (bsc#1178181).
   - CVE-2020-36311: Fixed a denial of service (soft lockup) by triggering
     destruction of a large SEV VM (bsc#1184511).
   - CVE-2021-29154: Fixed incorrect computation of branch displacements,
     allowing arbitrary code execution (bsc#1184391).
   - CVE-2021-30002: Fixed a memory leak for large arguments in
     video_usercopy (bsc#1184120).
   - CVE-2021-3483: Fixed a use-after-free in nosy.c (bsc#1184393).
   - CVE-2021-20219: Fixed a denial of service in n_tty_receive_char_special
     (bsc#1184397).

   The following non-security bugs were fixed:

   - cifs: do not send close in compound create+close requests (bsc#1181507).
   - net: sched: disable TCQ_F_NOLOCK for pfifo_fast (bsc#1183405)
   - powerpc/64s: Fix instruction encoding for lis in ppc_function_entry()
     (bsc#1065729).
   - powerpc/pmem: Include pmem prototypes (bsc#1113295 git-fixes).
   - powerpc/pseries/ras: Remove unused variable 'status' (bsc#1065729).
   - s390/pci: Fix s390_mmio_read/write with MIO (LTC#192079 bsc#1183755).
   - vsprintf: Do not have bprintf dereference pointers (bsc#1184494).
   - vsprintf: Do not preprocess non-dereferenced pointers for bprintf (%px
     and %pK) (bsc#1184494).
   - vsprintf: Fix off-by-one bug in bstr_printf() processing dereferenced
     pointers (bsc#1184494).
   - x86/mem_encrypt: Correct physical address calculation in
     __set_clr_pte_enc() (12sp5).
   - xen/events: fix setting irq affinity (bsc#1184583).

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 12-SP5:

      zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-1248=1

Package List:

   - SUSE Linux Enterprise Server 12-SP5 (x86_64):

      kernel-azure-4.12.14-16.53.1
      kernel-azure-base-4.12.14-16.53.1
      kernel-azure-base-debuginfo-4.12.14-16.53.1
      kernel-azure-debuginfo-4.12.14-16.53.1
      kernel-azure-debugsource-4.12.14-16.53.1
      kernel-azure-devel-4.12.14-16.53.1
      kernel-syms-azure-4.12.14-16.53.1

   - SUSE Linux Enterprise Server 12-SP5 (noarch):

      kernel-devel-azure-4.12.14-16.53.1
      kernel-source-azure-4.12.14-16.53.1

References:

   https://www.suse.com/security/cve/CVE-2020-25670.html
   https://www.suse.com/security/cve/CVE-2020-25671.html
   https://www.suse.com/security/cve/CVE-2020-25672.html
   https://www.suse.com/security/cve/CVE-2020-25673.html
   https://www.suse.com/security/cve/CVE-2020-36311.html
   https://www.suse.com/security/cve/CVE-2021-20219.html
   https://www.suse.com/security/cve/CVE-2021-29154.html
   https://www.suse.com/security/cve/CVE-2021-30002.html
   https://www.suse.com/security/cve/CVE-2021-3483.html
   https://bugzilla.suse.com/1065729
   https://bugzilla.suse.com/1113295
   https://bugzilla.suse.com/1178181
   https://bugzilla.suse.com/1181507
   https://bugzilla.suse.com/1183405
   https://bugzilla.suse.com/1183755
   https://bugzilla.suse.com/1184120
   https://bugzilla.suse.com/1184170
   https://bugzilla.suse.com/1184391
   https://bugzilla.suse.com/1184393
   https://bugzilla.suse.com/1184397
   https://bugzilla.suse.com/1184494
   https://bugzilla.suse.com/1184511
   https://bugzilla.suse.com/1184583