Security update for the Linux Kernel

An update that solves 11 vulnerabilities and has 107 security fixes can now be installed.

Description:

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

The following security bugs were fixed:

• CVE-2020-8834: KVM on Power8 processors had a conflicting use of HSTATE_HOST_R1 to store r1 state in kvmppc_hv_entry plus in kvmppc_{save,restore}_tm, leading to a stack corruption. Because of this, an attacker with the ability to run code in kernel space of a guest VM can cause the host kernel to panic (bnc#1168276).
• CVE-2020-11494: An issue was discovered in slc_bump in drivers/net/can/slcan.c, which allowed attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL (bnc#1168424).
• CVE-2020-10942: In get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family field, which might allow attackers to trigger kernel stack corruption via crafted system calls (bnc#1167629).
• CVE-2020-8647: Fixed a use-after-free vulnerability in the vc_do_resize function in drivers/tty/vt/vt.c (bnc#1162929).
• CVE-2020-8649: Fixed a use-after-free vulnerability in the vgacon_invert_region function in drivers/video/console/vgacon.c (bnc#1162931).
• CVE-2020-9383: Fixed an issue in set_fdc in drivers/block/floppy.c, which leads to a wait_til_ready out-of-bounds read (bnc#1165111).
• CVE-2019-9458: In the video driver there was a use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed (bnc#1168295).
• CVE-2019-3701: Fixed an issue in can_can_gw_rcv, which could cause a system crash (bnc#1120386).
• CVE-2019-19768: Fixed a use-after-free in the __blk_add_trace function in kernel/trace/blktrace.c (bnc#1159285).
• CVE-2019-19770: Fixed a use-after-free in the debugfs_remove function (bsc#1159198).
• CVE-2018-20836: Fixed a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, which potentially cloud have led to a use-after-free (bnc#1134395).

The following non-security bugs were fixed:

• ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro (bsc#1051510).
• ACPI: watchdog: Fix gas->access_width usage (bsc#1051510).
• ALSA: ali5451: remove redundant variable capture_flag (bsc#1051510).
• ALSA: core: Add snd_device_get_state() helper (bsc#1051510).
• ALSA: core: Replace zero-length array with flexible-array member (bsc#1051510).
• ALSA: emu10k1: Fix endianness annotations (bsc#1051510).
• ALSA: hda/ca0132 - Add Recon3Di quirk to handle integrated sound on EVGA X99 Classified motherboard (bsc#1051510).
• ALSA: hda/ca0132 - Replace zero-length array with flexible-array member (bsc#1051510).
• ALSA: hda_codec: Replace zero-length array with flexible-array member (bsc#1051510).
• ALSA: hda: default enable CA0132 DSP support (bsc#1051510).
• ALSA: hda/realtek - Add Headset Button supported for ThinkPad X1 (bsc#1111666).
• ALSA: hda/realtek - Add Headset Mic supported (bsc#1111666).
• ALSA: hda/realtek - Add more codec supported Headset Button (bsc#1111666).
• ALSA: hda/realtek - a fake key event is triggered by running shutup (bsc#1051510).
• ALSA: hda/realtek - Apply quirk for MSI GP63, too (bsc#1111666).
• ALSA: hda/realtek - Apply quirk for yet another MSI laptop (bsc#1111666).
• ALSA: hda/realtek - Enable headset mic of Acer X2660G with ALC662 (git-fixes).
• ALSA: hda/realtek: Enable mute LED on an HP system (bsc#1051510).
• ALSA: hda/realtek - Enable the headset of Acer N50-600 with ALC662 (git-fixes).
• ALSA: hda/realtek - Enable the headset of ASUS B9450FA with ALC294 (bsc#1111666).
• ALSA: hda/realtek - Fix a regression for mute led on Lenovo Carbon X1 (bsc#1111666).
• ALSA: hda/realtek: Fix pop noise on ALC225 (git-fixes).
• ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master (bsc#1111666).
• ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups (bsc#1051510).
• ALSA: hda/realtek - Set principled PC Beep configuration for ALC256 (bsc#1051510).
• ALSA: hda: remove redundant assignment to variable timeout (bsc#1051510).
• ALSA: hda: Use scnprintf() for string truncation (bsc#1051510).
• ALSA: hdsp: remove redundant assignment to variable err (bsc#1051510).
• ALSA: info: remove redundant assignment to variable c (bsc#1051510).
• ALSA: korg1212: fix if-statement empty body warnings (bsc#1051510).
• ALSA: line6: Fix endless MIDI read loop (git-fixes).
• ALSA: pcm: Fix superfluous snprintf() usage (bsc#1051510).
• ALSA: pcm.h: add for_each_pcm_streams() (bsc#1051510).
• ALSA: pcm: oss: Avoid plugin buffer overflow (git-fixes).
• ALSA: pcm: oss: Remove WARNING from snd_pcm_plug_alloc() checks (git-fixes).
• ALSA: pcm: oss: Unlock mutex temporarily for sleeping at read/write (bsc#1051510).
• ALSA: pcm: Use a macro for parameter masks to reduce the needed cast (bsc#1051510).
• ALSA: seq: oss: Fix running status after receiving sysex (git-fixes).
• ALSA: seq: virmidi: Fix running status after receiving sysex (git-fixes).
• ALSA: usb-audio: Add boot quirk for MOTU M Series (bsc#1111666).
• ALSA: usb-audio: Add clock validity quirk for Denon MC7000/MCX8000 (bsc#1111666).
• ALSA: usb-audio: Add delayed_register option (bsc#1051510).
• ALSA: usb-audio: add implicit fb quirk for MOTU M Series (bsc#1111666).
• ALSA: usb-audio: add quirks for Line6 Helix devices fw>=2.82 (bsc#1111666).
• ALSA: usb-audio: Add support for MOTU MicroBook IIc (bsc#1051510).
• ALSA: usb-audio: Apply 48kHz fixed rate playback for Jabra Evolve 65 headset (bsc#1111666).
• ALSA: usb-audio: Create a registration quirk for Kingston HyperX Amp (0951:16d8) (bsc#1051510).
• ALSA: usb-audio: Do not create a mixer element with bogus volume range (bsc#1051510).
• ALSA: usb-audio: Fix case when USB MIDI interface has more than one extra endpoint descriptor (bsc#1051510).
• ALSA: usb-audio: fix Corsair Virtuoso mixer label collision (bsc#1111666).
• ALSA: usb-audio: Fix mixer controls' USB interface for Kingston HyperX Amp (0951:16d8) (bsc#1051510).
• ALSA: usb-audio: Fix UAC2/3 effect unit parsing (bsc#1111666).
• ALSA: usb-audio: Inform devices that need delayed registration (bsc#1051510).
• ALSA: usb-audio: Parse source ID of UAC2 effect unit (bsc#1051510).
• ALSA: usb-audio: Rewrite registration quirk handling (bsc#1051510).
• ALSA: usb-audio: unlock on error in probe (bsc#1111666).
• ALSA: usb-audio: Use lower hex numbers for IDs (bsc#1111666).
• ALSA: usb-midi: Replace zero-length array with flexible-array member (bsc#1051510).
• ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status (bsc#1051510).
• ALSA: usx2y: use for_each_pcm_streams() macro (bsc#1051510).
• ALSA: via82xx: Fix endianness annotations (bsc#1051510).
• amdgpu/gmc_v9: save/restore sdpif regs during S3 (bsc#1113956)
• apei/ghes: Do not delay GHES polling (bsc#1166982).
• ASoC: dapm: Correct DAPM handling of active widgets during shutdown (bsc#1051510).
• ASoC: Intel: mrfld: fix incorrect check on p->sink (bsc#1051510).
• ASoC: Intel: mrfld: return error codes when an error occurs (bsc#1051510).
• ASoC: jz4740-i2s: Fix divider written at incorrect offset in register (bsc#1051510).
• ASoC: pcm512x: Fix unbalanced regulator enable call in probe error path (bsc#1051510).
• ASoC: pcm: Fix possible buffer overflow in dpcm state sysfs output (bsc#1051510).
• ASoC: pcm: update FE/BE trigger order based on the command (bsc#1051510).
• ASoC: sun8i-codec: Remove unused dev from codec struct (bsc#1051510).
• ASoC: topology: Fix memleak in soc_tplg_link_elems_load() (bsc#1051510).
• ath9k: Handle txpower changes even when TPC is disabled (bsc#1051510).
• atm: zatm: Fix empty body Clang warnings (bsc#1051510).
• atomic: Add irqsave variant of atomic_dec_and_lock() (bsc#1166003).
• b43legacy: Fix -Wcast-function-type (bsc#1051510).
• batman-adv: Avoid spurious warnings from bat_v neigh_cmp implementation (bsc#1051510).
• batman-adv: Do not schedule OGM for disabled interface (bsc#1051510).
• batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs (bsc#1051510).
• bcache: add code comment bch_keylist_pop() and bch_keylist_pop_front() (bsc#1163762).
• bcache: add code comments for state->pool in __btree_sort() (bsc#1163762).
• bcache: add code comments in bch_btree_leaf_dirty() (bsc#1163762).
• bcache: add cond_resched() in __bch_cache_cmp() (bsc#1163762).
• bcache: add idle_max_writeback_rate sysfs interface (bsc#1163762).
• bcache: add more accurate error messages in read_super() (bsc#1163762).
• bcache: add readahead cache policy options via sysfs interface (bsc#1163762).
• bcache: at least try to shrink 1 node in bch_mca_scan() (bsc#1163762).
• bcache: avoid unnecessary btree nodes flushing in btree_flush_write() (bsc#1163762).
• bcache: check return value of prio_read() (bsc#1163762).
• bcache: deleted code comments for dead code in bch_data_insert_keys() (bsc#1163762).
• bcache: do not export symbols (bsc#1163762).
• bcache: explicity type cast in bset_bkey_last() (bsc#1163762).
• bcache: fix a lost wake-up problem caused by mca_cannibalize_lock (bsc#1163762).
• bcache: Fix an error code in bch_dump_read() (bsc#1163762).
• bcache: fix deadlock in bcache_allocator (bsc#1163762).
• bcache: fix incorrect data type usage in btree_flush_write() (bsc#1163762).
• bcache: fix memory corruption in bch_cache_accounting_clear() (bsc#1163762).
• bcache: fix static checker warning in bcache_device_free() (bsc#1163762).
• bcache: ignore pending signals when creating gc and allocator thread (bsc#1163762, bsc#1112504).
• bcache: print written and keys in trace_bcache_btree_write (bsc#1163762).
• bcache: reap c->btree_cache_freeable from the tail in bch_mca_scan() (bsc#1163762).
• bcache: reap from tail of c->btree_cache in bch_mca_scan() (bsc#1163762).
• bcache: remove macro nr_to_fifo_front() (bsc#1163762).
• bcache: remove member accessed from struct btree (bsc#1163762).
• bcache: remove the extra cflags for request.o (bsc#1163762).
• bcache: Revert "bcache: shrink btree node cache after bch_btree_check()" (bsc#1163762, bsc#1112504).
• binfmt_elf: Do not move brk for INTERP-less ET_EXEC (bsc#1169013).
• binfmt_elf: move brk out of mmap when doing direct loader exec (bsc#1169013).
• blk: Fix kabi due to blk_trace_mutex addition (bsc#1159285).
• blk-mq: Allow blocking queue tag iter callbacks (bsc#1167316).
• blktrace: fix dereference after null check (bsc#1159285).
• blktrace: fix trace mutex deadlock (bsc#1159285).
• block: allow gendisk's request_queue registration to be (bsc#1104967,bsc#1159142).
• bnxt_en: Fix NTUPLE firmware command failures (bsc#1104745 ).
• bnxt_en: Fix TC queue mapping (networking-stable-20_02_05).
• bnxt_en: Improve device shutdown method (bsc#1104745 ).
• bnxt_en: Issue PCIe FLR in kdump kernel to cleanup pending DMAs (bsc#1134090 jsc#SLE-5954).
• bnxt_en: Support all variants of the 5750X chip family (bsc#1167216).
• bonding/alb: properly access headers in bond_alb_xmit() (networking-stable-20_02_09).
• bpf: Explicitly memset some bpf info structures declared on the stack (bsc#1083647).
• bpf: Explicitly memset the bpf_attr structure (bsc#1083647).
• bpf: fix ldx in ld_abs rewrite for large offsets (bsc#1154385).
• bpf: implement ld_abs/ld_ind in native bpf (bsc#1154385).
• bpf: make unknown opcode handling more robust (bsc#1154385).
• bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill (bsc#1109837).
• bpf: prefix cbpf internal helpers with bpf_ (bsc#1154385).
• bpf, x64: remove ld_abs/ld_ind (bsc#1154385).
• bpf, x64: save several bytes by using mov over movabsq when possible (bsc#1154385).
• brcmfmac: abort and release host after error (bsc#1111666).
• btrfs: Account for trans_block_rsv in may_commit_transaction (bsc#1165949).
• btrfs: add a flush step for delayed iputs (bsc#1165949).
• btrfs: add assertions for releasing trans handle reservations (bsc#1165949).
• btrfs: add btrfs_delete_ref_head helper (bsc#1165949).
• btrfs: add enospc debug messages for ticket failure (bsc#1165949).
• btrfs: Add enospc_debug printing in metadata_reserve_bytes (bsc#1165949).
• btrfs: add new flushing states for the delayed refs rsv (bsc#1165949).
• btrfs: add space reservation tracepoint for reserved bytes (bsc#1165949).
• btrfs: adjust dirty_metadata_bytes after writeback failure of extent buffer (bsc#1168273).
• btrfs: allow us to use up to 90% of the global rsv for unlink (bsc#1165949).
• btrfs: always reserve our entire size for the global reserve (bsc#1165949).
• btrfs: assert on non-empty delayed iputs (bsc##1165949).
• btrfs: be more explicit about allowed flush states (bsc#1165949).
• btrfs: call btrfs_create_pending_block_groups unconditionally (bsc#1165949).
• btrfs: catch cow on deleting snapshots (bsc#1165949).
• btrfs: change the minimum global reserve size (bsc#1165949).
• btrfs: check if there are free block groups for commit (bsc#1165949).
• btrfs: clean up error handling in btrfs_truncate() (bsc#1165949).
• btrfs: cleanup extent_op handling (bsc#1165949).
• btrfs: cleanup root usage by btrfs_get_alloc_profile (bsc#1165949).
• btrfs: cleanup the target logic in __btrfs_block_rsv_release (bsc#1165949).
• btrfs: clear space cache inode generation always (bsc#1165949).
• btrfs: delayed-ref: pass delayed_refs directly to btrfs_delayed_ref_lock (bsc#1165949).
• btrfs: Do mandatory tree block check before submitting bio (bsc#1168273).
• btrfs: do not account global reserve in can_overcommit (bsc#1165949).
• btrfs: do not allow reservations if we have pending tickets (bsc#1165949).
• btrfs: do not call btrfs_start_delalloc_roots in flushoncommit (bsc#1165949).
• btrfs: do not end the transaction for delayed refs in throttle (bsc#1165949).
• btrfs: do not enospc all tickets on flush failure (bsc#1165949).
• btrfs: do not reset bio->bi_ops while writing bio (bsc#1168273).
• btrfs: do not run delayed_iputs in commit (bsc##1165949).
• btrfs: do not run delayed refs in the end transaction logic (bsc#1165949).
• btrfs: do not use ctl->free_space for max_extent_size (bsc##1165949).
• btrfs: do not use global reserve for chunk allocation (bsc#1165949).
• btrfs: drop get_extent from extent_page_data (bsc#1168273).
• btrfs: drop min_size from evict_refill_and_join (bsc##1165949).
• btrfs: drop unused space_info parameter from create_space_info (bsc#1165949).
• btrfs: dump block_rsv details when dumping space info (bsc#1165949).
• btrfs: export block group accounting helpers (bsc#1165949).
• btrfs: export block_rsv_use_bytes (bsc#1165949).
• btrfs: export btrfs_block_rsv_add_bytes (bsc#1165949).
• btrfs: export __btrfs_block_rsv_release (bsc#1165949).
• btrfs: export space_info_add_*_bytes (bsc#1165949).
• btrfs: export the block group caching helpers (bsc#1165949).
• btrfs: export the caching control helpers (bsc#1165949).
• btrfs: export the excluded extents helpers (bsc#1165949).
• btrfs: extent_io: add proper error handling to lock_extent_buffer_for_io() (bsc#1168273).
• btrfs: extent_io: Handle errors better in btree_write_cache_pages() (bsc#1168273).
• btrfs: extent_io: Handle errors better in extent_write_full_page() (bsc#1168273).
• btrfs: extent_io: Handle errors better in extent_write_locked_range() (bsc#1168273).
• btrfs: extent_io: Handle errors better in extent_writepages() (bsc#1168273).
• btrfs: extent_io: Kill dead condition in extent_write_cache_pages() (bsc#1168273).
• btrfs: extent_io: Kill the forward declaration of flush_write_bio (bsc#1168273).
• btrfs: extent_io: Move the BUG_ON() in flush_write_bio() one level up (bsc#1168273).
• btrfs: extent-tree: Add lockdep assert when updating space info (bsc#1165949).
• btrfs: extent-tree: Add trace events for space info numbers update (bsc#1165949).
• btrfs: extent-tree: Detect bytes_may_use underflow earlier (bsc#1165949).
• btrfs: extent-tree: Detect bytes_pinned underflow earlier (bsc#1165949).
• btrfs: factor our read/write stage off csum_tree_block into its callers (bsc#1168273).
• btrfs: factor out the ticket flush handling (bsc#1165949).
• btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents (bsc#1163508).
• btrfs: fix crash due to "kernel BUG at ../fs/btrfs/relocation.c:4827!"
• btrfs: fix insert_reserved error handling (bsc##1165949).
• btrfs: fix may_commit_transaction to deal with no partial filling (bsc#1165949).
• btrfs: fix missing delayed iputs on unmount (bsc#1165949).
• btrfs: fix panic during relocation after ENOSPC before writeback happens (bsc#1163508).
• btrfs: fix qgroup double free after failure to reserve metadata for delalloc (bsc#1165949).
• btrfs: fix race leading to metadata space leak after task received signal (bsc#1165949).
• btrfs: fix truncate throttling (bsc#1165949).
• btrfs: fix unwritten extent buffers and hangs on future writeback attempts (bsc#1168273).
• btrfs: force chunk allocation if our global rsv is larger than metadata (bsc#1165949).
• btrfs: Improve global reserve stealing logic (bsc#1165949).
• btrfs: introduce an evict flushing state (bsc#1165949).
• btrfs: introduce delayed_refs_rsv (bsc#1165949).
• btrfs: loop in inode_rsv_refill (bsc#1165949).
• btrfs: make btrfs_destroy_delayed_refs use btrfs_delayed_ref_lock (bsc#1165949).
• btrfs: make btrfs_destroy_delayed_refs use btrfs_delete_ref_head (bsc#1165949).
• btrfs: make caching_thread use btrfs_find_next_key (bsc#1165949).
• btrfs: make plug in writing meta blocks really work (bsc#1168273).
• btrfs: merge two flush_write_bio helpers (bsc#1168273).
• btrfs: migrate btrfs_trans_release_chunk_metadata (bsc#1165949).
• btrfs: migrate inc/dec_block_group_ro code (bsc#1165949).
• btrfs: migrate nocow and reservation helpers (bsc#1165949).
• btrfs: migrate the alloc_profile helpers (bsc#1165949).
• btrfs: migrate the block group caching code (bsc#1165949).
• btrfs: migrate the block group cleanup code (bsc#1165949).
• btrfs: migrate the block group lookup code (bsc#1165949).
• btrfs: migrate the block group read/creation code (bsc#1165949).
• btrfs: migrate the block group ref counting stuff (bsc#1165949).
• btrfs: migrate the block group removal code (bsc#1165949).
• btrfs: migrate the block group space accounting helpers (bsc#1165949).
• btrfs: migrate the block-rsv code to block-rsv.c (bsc#1165949).
• btrfs: migrate the chunk allocation code (bsc#1165949).
• btrfs: migrate the delalloc space stuff to it's own home (bsc#1165949).
• btrfs: migrate the delayed refs rsv code (bsc#1165949).
• btrfs: migrate the dirty bg writeout code (bsc#1165949).
• btrfs: migrate the global_block_rsv helpers to block-rsv.c (bsc#1165949).
• btrfs: move and export can_overcommit (bsc#1165949).
• btrfs: move basic block_group definitions to their own header (bsc#1165949).
• btrfs: move btrfs_add_free_space out of a header file (bsc#1165949).
• btrfs: move btrfs_block_rsv definitions into it's own header (bsc#1165949).
• btrfs: move btrfs_raid_group values to btrfs_raid_attr table (bsc#1165949).
• btrfs: move btrfs_space_info_add_*_bytes to space-info.c (bsc#1165949).
• btrfs: move dump_space_info to space-info.c (bsc#1165949).
• btrfs: move reserve_metadata_bytes and supporting code to space-info.c (bsc#1165949).
• btrfs: move space_info to space-info.h (bsc#1165949).
• btrfs: move the space_info handling code to space-info.c (bsc#1165949).
• btrfs: move the space info update macro to space-info.h (bsc#1165949).
• btrfs: move the subvolume reservation stuff out of extent-tree.c (bsc#1165949).
• btrfs: only check delayed ref usage in should_end_transaction (bsc#1165949).
• btrfs: only check priority tickets for prior