Security update for the Linux Kernel (important)

An update that solves 15 vulnerabilities and has 12 fixes
is now available.

Description:

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

The following security bugs were fixed:

• CVE-2020-36516: Fixed an issue in the mixed IPID assignment method where
  an attacker was able to inject data into or terminate a victim’s TCP
  session (bnc#1196616).
• CVE-2021-4203: Fixed use-after-free read flaw that was found in
  sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and
  SO_PEERGROUPS race with listen() (bnc#1194535).
• CVE-2022-1012: Fixed a memory leak problem that was found in the TCP
  source port generation algorithm in net/ipv4/tcp.c (bnc#1199482).
• CVE-2022-20368: Fixed slab-out-of-bounds access in packet_recvmsg()
  (bsc#1202346).
• CVE-2022-20369: Fixed out of bounds write in v4l2_m2m_querybuf of
  v4l2-mem2mem.c (bnc#1202347).
• CVE-2022-21385: Fixed a flaw in net_rds_alloc_sgs() that allowed
  unprivileged local users to crash the machine (bnc#1202897).
• CVE-2022-2588: Fixed use-after-free in cls_route (bsc#1202096).
• CVE-2022-26373: Fixed non-transparent sharing of return predictor
  targets between contexts in some Intel Processors (bnc#1201726).
• CVE-2022-2639: Fixed an integer coercion error that was found in the
  openvswitch kernel module (bnc#1202154).
• CVE-2022-2663: Fixed an issue that was found in nf_conntrack_irc where
  the message handling could be confused and incorrectly matches the
  message (bnc#1202097).
• CVE-2022-29581: Fixed improper update of reference count vulnerability
  in net/sched that allowed a local attacker to cause privilege escalation
  to root (bnc#1199665).
• CVE-2022-2977: Fixed reference counting for struct tpm_chip
  (bsc#1202672).
• CVE-2022-3028: Fixed race condition that was found in the IP framework
  for transforming packets (XFRM subsystem) (bnc#1202898).
• CVE-2022-36879: Fixed an issue in xfrm_expand_policies in
  net/xfrm/xfrm_policy.c where a refcount could be dropped twice
  (bnc#1201948).
• CVE-2022-39188: Fixed race condition in include/asm-generic/tlb.h where
  a device driver can free a page while it still has stale TLB entries
  (bnc#1203107).

The following non-security bugs were fixed:

• rpm: Fix parsing of rpm/macros.kernel-source on SLE12 (bsc#1201019).
• cifs: fix error paths in cifs_tree_connect() (bsc#1177440).
• cifs: fix uninitialized pointer in error case in dfs_cache_get_tgt_share
  (bsc#1188944).
• cifs: report error instead of invalid when revalidating a dentry fails
  (bsc#1177440).
• cifs: skip trailing separators of prefix paths (bsc#1188944).
• kernel-obs-build: include qemu_fw_cfg (boo#1201705)
• lightnvm: Remove lightnvm implemenation (bsc#1191881 bsc#1201420
  ZDI-CAN-17325).
• md/bitmap: do not set sb values if can’t pass sanity check (bsc#1197158).
• mm/rmap.c: do not reuse anon_vma if we just want a copy (git-fixes,
  bsc#1203098).
• mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse
  (git-fixes, bsc#1203098).
• net_sched: cls_route: disallow handle of 0 (bsc#1202393).
• net_sched: cls_route: disallow handle of 0 (bsc#1202393).
• objtool: Add --backtrace support (bsc#1202396).
• objtool: Add support for intra-function calls (bsc#1202396).
• objtool: Allow no-op CFI ops in alternatives (bsc#1202396).
• objtool: Convert insn type to enum (bsc#1202396).
• objtool: Do not use ignore flag for fake jumps (bsc#1202396).
• objtool: Fix !CFI insn_state propagation (bsc#1202396).
• objtool: Fix ORC vs alternatives (bsc#1202396).
• objtool: Fix sibling call detection (bsc#1202396).
• objtool: Make handle_insn_ops() unconditional (bsc#1202396).
• objtool: Remove INSN_STACK (bsc#1202396).
• objtool: Remove check preventing branches within alternative
  (bsc#1202396).
• objtool: Rename elf_open() to prevent conflict with libelf from
  elftoolchain (bsc#1202396).
• objtool: Rename struct cfi_state (bsc#1202396).
• objtool: Rework allocating stack_ops on decode (bsc#1202396).
• objtool: Rewrite alt->skip_orig (bsc#1202396).
• objtool: Set insn->func for alternatives (bsc#1202396).
• objtool: Support conditional retpolines (bsc#1202396).
• objtool: Support multiple stack_op per instruction (bsc#1202396).
• objtool: Track original function across branches (bsc#1202396).
• objtool: Uniquely identify alternative instruction groups (bsc#1202396).
• objtool: Use Elf_Scn typedef instead of assuming struct name
  (bsc#1202396).
• tcp: add some entropy in __inet_hash_connect() (bsc#1180153 bsc#1202335).
• tcp: change source port randomizarion at connect() time (bsc#1180153
  bsc#1202335).

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-15.4-2022-3408=1

• openSUSE Leap 15.3:

  zypper in -t patch openSUSE-SLE-15.3-2022-3408=1

• SUSE Linux Enterprise Server for SAP 15-SP1:

  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP1-2022-3408=1

• SUSE Linux Enterprise Server 15-SP1-LTSS:

  zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-LTSS-2022-3408=1

• SUSE Linux Enterprise Server 15-SP1-BCL:

  zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-BCL-2022-3408=1

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

  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2022-3408=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-2022-3408=1

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

  zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-ESPOS-2022-3408=1

• SUSE Linux Enterprise High Availability 15-SP1:

  zypper in -t patch SUSE-SLE-Product-HA-15-SP1-2022-3408=1

• SUSE Enterprise Storage 6:

  zypper in -t patch SUSE-Storage-6-2022-3408=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.