| Description: |
The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2019-1125: Enable Spectre v1 swapgs mitigations (bsc#1139358). - CVE-2018-20855: An issue was discovered in create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace (bsc#1143045). - CVE-2019-14284: The drivers/block/floppy.c allowed a denial of service by setup_format_params division-by-zero. Two consecutive ioctls can trigger the bug: the first one should set the drive geometry with .sect and .rate values that make F_SECT_PER_TRACK be zero. Next, the floppy format operation should be called. It can be triggered by an unprivileged local user even when a floppy disk has not been inserted. NOTE: QEMU creates the floppy device by default (bsc#1143189). - CVE-2019-14283: The function set_geometry in drivers/block/floppy.c did not validate the sect and head fields, as demonstrated by an integer overflow and out-of-bounds read. It can be triggered by an unprivileged local user when a floppy disk has been inserted. NOTE: QEMU creates the floppy device by default (bsc#1143191). - CVE-2019-11810: A NULL pointer dereference can occur when megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c. This causes a Denial of Service, related to a use-after-free (bsc#1134399). - CVE-2019-13648: In the Linux kernel on the powerpc platform, when hardware transactional memory is disabled, a local user can cause a denial of service (TM Bad Thing exception and system crash) via a sigreturn() system call that sends a crafted signal frame. This affects arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c (bnc#1142254). - CVE-2019-13631: In parse_hid_report_descriptor in drivers/input/tablet/gtco.c, a malicious USB device can send an HID report that triggers an out-of-bounds write during generation of debugging messages (bsc#1142023). - CVE-2019-15118: Fixed kernel stack exhaustion in check_input_term in sound/usb/mixer.c via mishandled recursion (bnc#1145922). - CVE-2019-15117: Fixed out-of-bounds memory access in parse_audio_mixer_unit in sound/usb/mixer.c via mishandled short descriptor (bnc#1145920). - CVE-2019-3819: A flaw was fixed in the function hid_debug_events_read() in drivers/hid/hid-debug.c file which may have enter an infinite loop with certain parameters passed from a userspace. A local privileged user ('root') could have caused a system lock up and a denial of service (bnc#1123161). - CVE-2019-10207: Check for missing tty operations in bluetooth/hci_uart (bsc#1142857). - CVE-2018-20856: Fixed a use-after-free issue in block/blk-core.c, where certain error case are mishandled (bnc#1143048).
The following non-security bugs were fixed:
- cifs: do not log STATUS_NOT_FOUND errors for DFS (bsc#1125674). - dlm: Fix saving of NULL callbacks (bsc#1135365). - bcache: Revert 'bcache: fix high CPU occupancy during journal' (bsc#1140652, bsc#1144288). - bcache: Revert 'bcache: free heap cache_set->flush_btree in bch_journal_free' (bsc#1140652, bsc#1144288). - bcache: add reclaimed_journal_buckets to struct cache_set (bsc#1140652, bsc#1144288). - bcache: fix race in btree_flush_write() (bsc#1140652, bsc#1144288). - bcache: fix stack corruption by PRECEDING_KEY() (bsc#1130972, bsc#1144257). - bcache: only set BCACHE_DEV_WB_RUNNING when cached device attached (bsc#1130972, bsc#1144273). - bcache: performance improvement for btree_flush_write() (bsc#1140652, bsc#1144288). - bcache: remove retry_flush_write from struct cache_set (bsc#1140652, bsc#1144288). - bonding: Force slave speed check after link state recovery for 802.3ad (bsc#1137584). - clocksource: Defer override invalidation unless clock is unstable (bsc#1139826). - kvm: mmu: Fix overflow on kvm mmu page limit calculation (bsc#1135335). - kvmclock: fix TSC calibration for nested guests (bsc#1133860, jsc#PM-1211). - mm, page_alloc: fix has_unmovable_pages for HugePages (bsc#1127034). - powerpc/watchpoint: Restore NV GPRs while returning from exception (bsc#1140945, bsc#1141401, bsc#1141402, bsc#1141452, bsc#1141453, bsc#1141454). - qla2xxx: performance degradation when enabling blk-mq (bsc#1128977). - qlge: Deduplicate lbq_buf_size (bsc#1106061). - qlge: Deduplicate rx buffer queue management (bsc#1106061). - qlge: Factor out duplicated expression (bsc#1106061). - qlge: Fix dma_sync_single calls (bsc#1106061). - qlge: Fix irq masking in INTx mode (bsc#1106061). - qlge: Refill empty buffer queues from wq (bsc#1106061). - qlge: Refill rx buffers up to multiple of 16 (bsc#1106061). - qlge: Remove bq_desc.maplen (bsc#1106061). - qlge: Remove irq_cnt (bsc#1106061). - qlge: Remove page_chunk.last_flag (bsc#1106061). - qlge: Remove qlge_bq.len size (bsc#1106061). - qlge: Remove rx_ring.sbq_buf_size (bsc#1106061). - qlge: Remove rx_ring.type (bsc#1106061). - qlge: Remove useless dma synchronization calls (bsc#1106061). - qlge: Remove useless memset (bsc#1106061). - qlge: Replace memset with assignment (bsc#1106061). - qlge: Update buffer queue prod index despite oom (bsc#1106061). - rbd: flush rbd_dev->watch_dwork after watch is unregistered (bsc#1143333). - rbd: retry watch re-registration periodically (bsc#1143333). - sched/fair: Do not free p->numa_faults with concurrent readers (bsc#1144920). - sched/fair: Use RCU accessors consistently for ->numa_group (bsc#1144920). - scsi: virtio_scsi: let host do exception handling (bsc#1141181). - x86: mm: fix fast GUP with hyper-based TLB flushing (VM Functionality, bsc#1140903). - x86: tsc: Add X86_FEATURE_TSC_KNOWN_FREQ flag (bsc#1133860, jsc#PM-1211). - xen: let alloc_xenballooned_pages() fail if not enough memory free (XSA-300).
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