This bug was fixed in the package linux - 4.4.0-201.233 --------------- linux (4.4.0-201.233) xenial; urgency=medium * xenial/linux: 4.4.0-201.233 -proposed tracker (LP: #1911265) * Touchpad not detected on ByteSpeed C15B laptop (LP: #1906128) - Input: i8042 - add ByteSpeed touchpad to noloop table * stack trace in kernel (LP: #1903596) - net: napi: remove useless stack trace * CVE-2020-27777 - powerpc/rtas: Restrict RTAS requests from userspace - [Config]: Set CONFIG_PPC_RTAS_FILTER * Xenial update: v4.4.247 upstream stable release (LP: #1906703) - btrfs: tree-checker: Enhance chunk checker to validate chunk profile - btrfs: inode: Verify inode mode to avoid NULL pointer dereference - HID: cypress: Support Varmilo Keyboards' media hotkeys - Input: i8042 - allow insmod to succeed on devices without an i8042 controller - HID: hid-sensor-hub: Fix issue with devices with no report ID - x86/xen: don't unbind uninitialized lock_kicker_irq - proc: don't allow async path resolution of /proc/self components - dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size - scsi: libiscsi: Fix NOP race condition - scsi: target: iscsi: Fix cmd abort fabric stop race - scsi: ufs: Fix race between shutdown and runtime resume flow - bnxt_en: fix error return code in bnxt_init_board() - video: hyperv_fb: Fix the cache type when mapping the VRAM - bnxt_en: Release PCI regions when DMA mask setup fails during probe. - IB/mthca: fix return value of error branch in mthca_init_cq() - nfc: s3fwrn5: use signed integer for parsing GPIO numbers - efivarfs: revert "fix memory leak in efivarfs_create()" - perf probe: Fix to die_entrypc() returns error correctly - USB: core: Change %pK for __user pointers to %px - x86/speculation: Fix prctl() when spectre_v2_user={seccomp,prctl},ibpb - USB: core: add endpoint-blacklist quirk - USB: core: Fix regression in Hercules audio card - btrfs: fix lockdep splat when reading qgroup config on mount - Linux 4.4.247 * Xenial update: v4.4.246 upstream stable release (LP: #1906700) - ah6: fix error return code in ah6_input() - atm: nicstar: Unmap DMA on send error - net: b44: fix error return code in b44_init_one() - net: bridge: add missing counters to ndo_get_stats64 callback - netlabel: fix our progress tracking in netlbl_unlabel_staticlist() - netlabel: fix an uninitialized warning in netlbl_unlabel_staticlist() - net/mlx4_core: Fix init_hca fields offset - net: x25: Increase refcnt of "struct x25_neigh" in x25_rx_call_request - qlcnic: fix error return code in qlcnic_83xx_restart_hw() - sctp: change to hold/put transport for proto_unreach_timer - net: usb: qmi_wwan: Set DTR quirk for MR400 - net: Have netpoll bring-up DSA management interface - pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq - arm64: psci: Avoid printing in cpu_psci_cpu_die() - MIPS: Fix BUILD_ROLLBACK_PROLOGUE for microMIPS - Input: adxl34x - clean up a data type in adxl34x_probe() - arm: dts: imx6qdl-udoo: fix rgmii phy-mode for ksz9031 phy - ARM: dts: imx50-evk: Fix the chip select 1 IOMUX - perf lock: Don't free "lock_seq_stat" if read_count isn't zero - can: dev: can_restart(): post buffer from the right context - can: peak_usb: fix potential integer overflow on shift of a int - can: m_can: m_can_handle_state_change(): fix state change - MIPS: Alchemy: Fix memleak in alchemy_clk_setup_cpu - regulator: ti-abb: Fix array out of bound read access on the first transition - libfs: fix error cast of negative value in simple_attr_write() - ALSA: ctl: fix error path at adding user-defined element set - ALSA: mixart: Fix mutex deadlock - tty: serial: imx: keep console clocks always on - efivarfs: fix memory leak in efivarfs_create() - ext4: fix bogus warning in ext4_update_dx_flag() - xtensa: disable preemption around cache alias management calls - mac80211: minstrel: remove deferred sampling code - mac80211: minstrel: fix tx status processing corner case - mac80211: allow driver to prevent two stations w/ same address - mac80211: free sta in sta_info_insert_finish() on errors - s390/cpum_sf.c: fix file permission for cpum_sfb_size - x86/microcode/intel: Check patch signature before saving microcode for early loading - Linux 4.4.246 * Xenial update: v4.4.245 upstream stable release (LP: #1906698) - i2c: imx: Fix external abort on interrupt in exit paths - xfs: catch inode allocation state mismatch corruption - xfs: validate cached inodes are free when allocated - powerpc/8xx: Always fault when _PAGE_ACCESSED is not set - Input: sunkbd - avoid use-after-free in teardown paths - mac80211: always wind down STA state - KVM: x86: clflushopt should be treated as a no-op by emulation - Linux 4.4.245 -- Kelsey Skunberg