SUSE Security Update: Security update for the Linux RT Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2022:0544-1
Rating:             critical
References:         #1177599 #1183405 #1185377 #1187428 #1188605 
                    #1193096 #1193506 #1193861 #1193864 #1193867 
                    #1194048 #1194227 #1194880 #1195009 #1195065 
                    #1195184 #1195254 
Cross-References:   CVE-2021-22600 CVE-2021-39648 CVE-2021-39657
                    CVE-2021-45095 CVE-2022-0330 CVE-2022-22942
                   
CVSS scores:
                    CVE-2021-22600 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-22600 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-39648 (SUSE): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
                    CVE-2021-39657 (SUSE): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
                    CVE-2021-45095 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2021-45095 (SUSE): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
                    CVE-2022-0330 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-22942 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Micro 5.0
                    SUSE Linux Enterprise Module for Realtime 15-SP2
______________________________________________________________________________

   An update that solves 6 vulnerabilities and has 11 fixes is
   now available.

Description:


   The SUSE Linux Enterprise 15 SP2 RT kernel was updated to receive various
   security and bugfixes.


   The following security bugs were fixed:

   - CVE-2022-0435: Fixed remote stack overflow in net/tipc module that
     validate domain record count on input (bsc#1195254).
   - CVE-2021-45095: Fixed refcount leak in pep_sock_accept in
     net/phonet/pep.c (bnc#1193867).
   - CVE-2022-22942: Fixed stale file descriptors on failed usercopy
     (bsc#1195065).
   - CVE-2021-22600: Fixed double free bug in packet_set_ring() in
     net/packet/af_packet.c that could have been exploited by a local user
     through crafted syscalls to escalate privileges or deny service
     (bnc#1195184).
   - CVE-2021-39657: Fixed out of bounds read due to a missing bounds check
     in ufshcd_eh_device_reset_handler of ufshcd.c. This could lead to local
     information disclosure with System execution privileges needed
     (bnc#1193864).
   - CVE-2021-39648: Fixed possible disclosure of kernel heap memory due to a
     race condition in gadget_dev_desc_UDC_show of configfs.c. This could
     lead to local information disclosure with System execution privileges
     needed. User interaction is not needed for exploitation (bnc#1193861).
   - CVE-2022-0330: Fixed flush TLBs before releasing backing store
     (bsc#1194880).


   The following non-security bugs were fixed:

   - bpf: Verifer, adjust_scalar_min_max_vals to always call
     update_reg_bounds() (bsc#1194227).
   - btrfs: tree-checker: Add EXTENT_ITEM and METADATA_ITEM check
     (bsc#1195009).
   - btrfs: tree-checker: annotate all error branches as unlikely
     (bsc#1195009).
   - btrfs: tree-checker: check for BTRFS_BLOCK_FLAG_FULL_BACKREF being set
     improperly (bsc#1195009).
   - hv_netvsc: Set needed_headroom according to VF (bsc#1193506).
   - net, xdp: Introduce xdp_init_buff utility routine (bsc#1193506).
   - net, xdp: Introduce xdp_prepare_buff utility routine (bsc#1193506).
   - net: allow retransmitting a TCP packet if original is still in queue
     (bsc#1188605 bsc#1187428).
   - net: mana: Add RX fencing (bsc#1193506).
   - net: mana: Add XDP support (bsc#1193506).
   - net: sch_generic: aviod concurrent reset and enqueue op for lockless
     qdisc (bsc#1183405).
   - net: sched: add barrier to ensure correct ordering for lockless qdisc
     (bsc#1183405).
   - net: sched: avoid unnecessary seqcount operation for lockless qdisc
     (bsc#1183405).
   - net: sched: fix packet stuck problem for lockless qdisc (bsc#1183405).
   - net: sched: fix tx action reschedule issue with stopped queue
     (bsc#1183405).
   - net: sched: fix tx action rescheduling issue during deactivation
     (bsc#1183405).
   - net: sched: replaced invalid qdisc tree flush helper in qdisc_replace
     (bsc#1183405).
   - net_sched: avoid resetting active qdisc for multiple times (bsc#1183405).
   - net_sched: get rid of unnecessary dev_qdisc_reset() (bsc#1183405).
   - net_sched: use qdisc_reset() in qdisc_destroy() (bsc#1183405).
   - nvme: add 'iopolicy' module parameter (bsc#1177599 bsc#1193096).
   - xfrm: fix MTU regression (bsc#1185377, bsc#1194048).


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 Module for Realtime 15-SP2:

      zypper in -t patch SUSE-SLE-Module-RT-15-SP2-2022-544=1

   - SUSE Linux Enterprise Micro 5.0:

      zypper in -t patch SUSE-SUSE-MicroOS-5.0-2022-544=1



Package List:

   - SUSE Linux Enterprise Module for Realtime 15-SP2 (x86_64):

      cluster-md-kmp-rt-5.3.18-73.1
      cluster-md-kmp-rt-debuginfo-5.3.18-73.1
      dlm-kmp-rt-5.3.18-73.1
      dlm-kmp-rt-debuginfo-5.3.18-73.1
      gfs2-kmp-rt-5.3.18-73.1
      gfs2-kmp-rt-debuginfo-5.3.18-73.1
      kernel-rt-5.3.18-73.1
      kernel-rt-debuginfo-5.3.18-73.1
      kernel-rt-debugsource-5.3.18-73.1
      kernel-rt-devel-5.3.18-73.1
      kernel-rt-devel-debuginfo-5.3.18-73.1
      kernel-rt_debug-5.3.18-73.1
      kernel-rt_debug-debuginfo-5.3.18-73.1
      kernel-rt_debug-debugsource-5.3.18-73.1
      kernel-rt_debug-devel-5.3.18-73.1
      kernel-rt_debug-devel-debuginfo-5.3.18-73.1
      kernel-syms-rt-5.3.18-73.1
      ocfs2-kmp-rt-5.3.18-73.1
      ocfs2-kmp-rt-debuginfo-5.3.18-73.1

   - SUSE Linux Enterprise Module for Realtime 15-SP2 (noarch):

      kernel-devel-rt-5.3.18-73.1
      kernel-source-rt-5.3.18-73.1

   - SUSE Linux Enterprise Micro 5.0 (x86_64):

      kernel-rt-5.3.18-73.1
      kernel-rt-debuginfo-5.3.18-73.1
      kernel-rt-debugsource-5.3.18-73.1


References:

   https://www.suse.com/security/cve/CVE-2021-22600.html
   https://www.suse.com/security/cve/CVE-2021-39648.html
   https://www.suse.com/security/cve/CVE-2021-39657.html
   https://www.suse.com/security/cve/CVE-2021-45095.html
   https://www.suse.com/security/cve/CVE-2022-0330.html
   https://www.suse.com/security/cve/CVE-2022-22942.html
   https://bugzilla.suse.com/1177599
   https://bugzilla.suse.com/1183405
   https://bugzilla.suse.com/1185377
   https://bugzilla.suse.com/1187428
   https://bugzilla.suse.com/1188605
   https://bugzilla.suse.com/1193096
   https://bugzilla.suse.com/1193506
   https://bugzilla.suse.com/1193861
   https://bugzilla.suse.com/1193864
   https://bugzilla.suse.com/1193867
   https://bugzilla.suse.com/1194048
   https://bugzilla.suse.com/1194227
   https://bugzilla.suse.com/1194880
   https://bugzilla.suse.com/1195009
   https://bugzilla.suse.com/1195065
   https://bugzilla.suse.com/1195184
   https://bugzilla.suse.com/1195254