Security update for the Linux Kernel (important)

An update that solves 7 vulnerabilities, contains one
feature and has one errata is now available.

Description:

The SUSE Linux Enterprise 15-SP1 kernel was updated to receive various
security and bugfixes.

The following security bugs were fixed:

• CVE-2022-20008: Fixed local information disclosure due to possibility to
  read kernel heap memory via mmc_blk_read_single of block.c (bnc#1199564).
• CVE-2022-2503: Fixed a vulnerability that allowed root to bypass LoadPin
  and load untrusted and unverified kernel modules and firmware
  (bnc#1202677).
• CVE-2022-32296: Fixed vulnerability where TCP servers were allowed to
  identify clients by observing what source ports are used (bnc#1200288).
• CVE-2022-3239: Fixed an use-after-free in the video4linux driver that
  could lead a local user to able to crash the system or escalate their
  privileges (bnc#1203552).
• CVE-2022-3303: Fixed a race condition in the sound subsystem due to
  improper locking (bnc#1203769).
• CVE-2022-41218: Fixed an use-after-free caused by refcount races in
  drivers/media/dvb-core/dmxdev.c (bnc#1202960).
• CVE-2022-41848: Fixed a race condition in
  drivers/char/pcmcia/synclink_cs.c mgslpc_ioctl and mgslpc_detach
  (bnc#1203987).

The following non-security bugs were fixed:

• dtb: Do not include sources in src.rpm - refer to kernel-source Same as
  other kernel binary packages there is no need to carry duplicate sources
  in dtb packages.
• mkspec: eliminate @NOSOURCE@ macro This should be alsways used with
  @SOURCES@, just include the content there.
• net: mana: Add rmb after checking owner bits (git-fixes).
• net: mana: Add the Linux MANA PF driver (bnc#1201309, jsc#PED-529).
• x86/bugs: Reenable retbleed=off While for older kernels the return
  thunks are statically built in and cannot be dynamically patched out,
  retbleed=off should still be possible to do so that the mitigation can
  still be disabled on Intel who do not use the return thunks but IBRS.

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:

• openSUSE Leap 15.4:

  zypper in -t patch openSUSE-SLE-15.4-2022-3693=1

• openSUSE Leap 15.3:

  zypper in -t patch openSUSE-SLE-15.3-2022-3693=1

• SUSE Linux Enterprise Server for SAP 15-SP1:

  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP1-2022-3693=1

• SUSE Linux Enterprise Server 15-SP1-LTSS:

  zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-LTSS-2022-3693=1

• SUSE Linux Enterprise Server 15-SP1-BCL:

  zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-BCL-2022-3693=1

• SUSE Linux Enterprise Module for Live Patching 15-SP1:

  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2022-3693=1

  Please note that this is the initial kernel livepatch without fixes
  itself, this livepatch package is later updated by seperate standalone
  livepatch updates.

• SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS:

  zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-LTSS-2022-3693=1

• SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS:

  zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-ESPOS-2022-3693=1

• SUSE Linux Enterprise High Availability 15-SP1:

  zypper in -t patch SUSE-SLE-Product-HA-15-SP1-2022-3693=1

• SUSE Enterprise Storage 6:

  zypper in -t patch SUSE-Storage-6-2022-3693=1

• SUSE CaaS Platform 4.0:

  To install this update, use the SUSE CaaS Platform ‘skuba’ tool. It
  will inform you if it detects new updates and let you then trigger
  updating of the complete cluster in a controlled way.