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

The following security bugs were fixed :

CVE-2019-19081: Fixed a memory leak in the nfp_flower_spawn_vnic_reprs() could have allowed attackers to cause a denial of service (bsc#1157045).

CVE-2019-19080: Fixed four memory leaks in the nfp_flower_spawn_phy_reprs() could have allowed attackers to cause a denial of service (bsc#1157044).

CVE-2019-19052: Fixed a memory leak in the gs_can_open() which could have led to denial of service (bsc#1157324).

CVE-2019-19067: Fixed multiple memory leaks in acp_hw_init (bsc#1157180).

CVE-2019-19060: Fixed a memory leak in the adis_update_scan_mode() which could have led to denial of service (bsc#1157178).

CVE-2019-19049: Fixed a memory leak in unittest_data_add (bsc#1157173).

CVE-2019-19075: Fixed a memory leak in the ca8210_probe() which could have led to denial of service by triggering ca8210_get_platform_data() failures (bsc#1157162).

CVE-2019-19058: Fixed a memory leak in the alloc_sgtable() which could have led to denial of service by triggering alloc_page() failures (bsc#1157145).

CVE-2019-19074: Fixed a memory leak in the ath9k_wmi_cmd() function which could have led to denial of service (bsc#1157143).

CVE-2019-19073: Fixed multiple memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c which could have led to denial of service by triggering wait_for_completion_timeout() failures (bsc#1157070).

CVE-2019-19083: Fixed multiple memory leaks in *clock_source_create() functions which could have led to denial of service (bsc#1157049).

CVE-2019-19082: Fixed multiple memory leaks in *create_resource_pool() which could have led to denial of service (bsc#1157046).

CVE-2019-15916: Fixed a memory leak in register_queue_kobjects() which might have led denial of service (bsc#1149448).

CVE-2019-0154: Fixed an improper access control in subsystem for Intel (R) processor graphics whichs may have allowed an authenticated user to potentially enable denial of service via local access (bsc#1135966).

CVE-2019-0155: Fixed an improper access control in subsystem for Intel (R) processor graphics whichs may have allowed an authenticated user to potentially enable escalation of privilege via local access (bsc#1135967).

CVE-2019-16231: Fixed a NULL pointer dereference due to lack of checking the alloc_workqueue return value (bsc#1150466).

CVE-2019-18805: Fixed an integer overflow in tcp_ack_update_rtt() leading to a denial of service or possibly unspecified other impact (bsc#1156187).

CVE-2019-17055: Enforced CAP_NET_RAW in the AF_ISDN network module to restrict unprivileged users to create a raw socket (bsc#1152782).

CVE-2019-16995: Fixed a memory leak in hsr_dev_finalize() which may have caused denial of service (bsc#1152685).

CVE-2019-16233: drivers/scsi/qla2xxx/qla_os.c did not check the alloc_workqueue return value, leading to a NULL pointer dereference.
(bsc#1150457).

CVE-2019-10220: Added sanity checks on the pathnames passed to the user space. (bsc#1144903)

CVE-2019-17666: rtlwifi: Fix potential overflow in P2P code (bsc#1154372).

CVE-2019-17056: The AF_NFC network module did not enforce CAP_NET_RAW, which meant that unprivileged users could create a raw socket (bsc#1152788).

CVE-2019-14821: An out-of-bounds access issue was fixed in the kernel's kvm hypervisor. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system (bnc#1151350).

CVE-2017-18595: A double free in allocate_trace_buffer was fixed (bnc#1149555).

CVE-2019-9506: The Bluetooth BR/EDR specification used to permit sufficiently low encryption key length and did not prevent an attacker from influencing the key length negotiation. This allowed practical brute-force attacks (aka 'KNOB') that could decrypt traffic and inject arbitrary ciphertext without the victim noticing (bnc#1137865).

CVE-2019-14835: A buffer overflow flaw was found in the kernel's vhost functionality that translates virtqueue buffers to IOVs. A privileged guest user able to pass descriptors with invalid length to the host could use this flaw to increase their privileges on the host (bnc#1150112).

CVE-2019-9456: An out-of-bounds write in the USB monitor driver has been fixed. This issue could lead to local escalation of privilege with System execution privileges needed. (bnc#1150025).

CVE-2019-15030, CVE-2019-15031: On the powerpc platform, a local user could read vector registers of other users' processes via an interrupt (bsc#1149713).

CVE-2019-18683: An issue was discovered in drivers/media/platform/vivid. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded. There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free (bnc#1155897).

CVE-2019-18809: A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c allows attackers to cause a denial of service (memory consumption), aka CID-2289adbfa559 (bnc#1156258).

CVE-2019-19078: A memory leak in the ath10k_usb_hif_tx_sg() function in drivers/net/wireless/ath/ath10k/usb.c allows attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures, aka CID-b8d17e7d93d2 (bnc#1157032).

CVE-2019-18660: The Linux kernel on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c (bnc#1157038).

CVE-2019-14895: A heap-based buffer overflow was discovered in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could allow the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1157158).

CVE-2019-19065: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c allows attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures, aka CID-34b3be18a04e (bnc#1157191).

CVE-2019-19057: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in drivers/net/wireless/marvell/mwifiex/pcie.c allow attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures, aka CID-d10dcb615c8e (bnc#1157193).

CVE-2019-19056: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in drivers/net/wireless/marvell/mwifiex/pcie.c allows attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures, aka CID-db8fd2cde932 (bnc#1157197).

CVE-2019-19063: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c allow attackers to cause a denial of service (memory consumption), aka CID-3f9361695113 (bnc#1157298).

CVE-2019-19046: A memory leak in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c allow attackers to cause a denial of service (bsc#1157304).

CVE-2019-19068: A memory leak in the rtl8xxxu_submit_int_urb() function in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c allows attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures, aka CID-a2cdd07488e6 (bnc#1157307).

CVE-2019-19062: A memory leak in the crypto_report() function in crypto/crypto_user_base.c allows attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures, aka CID-ffdde5932042 (bnc#1157333).

CVE-2019-19227: In the AppleTalk subsystem, there is a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client, aka CID-9804501fa122 (bnc#1157678).

CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack.

The Linux kernel was supplemented with the option to disable TSX operation altogether (requiring CPU Microcode updates on older systems) and better flushing of microarchitectural buffers (VERW).

The set of options available is described in our TID at https://www.suse.com/support/kb/doc/?id=7024251

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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

The following security bugs were fixed :

CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).

CVE-2019-14895: A heap-based buffer overflow was discovered in the Marvell WiFi driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could allow the remote device to cause a denial of service or possibly execute arbitrary code (bnc#1157158).

CVE-2019-14896: A heap overflow was found in the add_ie_rates() function of the Marvell Wifi Driver (bsc#1157157).

CVE-2019-14897: A stack overflow was found in the lbs_ibss_join_existing() function of the Marvell Wifi Driver (bsc#1157155).

CVE-2019-14901: A heap overflow flaw was found in the Marvell WiFi driver. The vulnerability allowed a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code (bnc#1157042).

CVE-2019-15213: A use-after-free bug caused by a malicious USB device was found in drivers/media/usb/dvb-usb/dvb-usb-init.c (bsc#1146544).

CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c. The check for the length of variable elements in a beacon head was insufficient, leading to a buffer overflow (bnc#1152107).

CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service, aka CID-07f12b26e21a (bnc#1161523).

CVE-2019-18660: An information disclosure bug occured because the Spectre-RSB mitigation were not in place for all applicable CPUs, aka CID-39e72bf96f58 (bnc#1157038).

CVE-2019-18683: Multiple race conditions were discovered in drivers/media/platform/vivid. It was exploitable for privilege escalation if local users had access to /dev/video0, but only if the driver happened to be loaded. At least one of these race conditions led to a use-after-free (bnc#1155897).

CVE-2019-18808: A memory leak in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption), aka CID-128c66429247 (bnc#1156259).

CVE-2019-18809: A memory leak in drivers/media/usb/dvb-usb/af9005.c allowed attackers to cause a denial of service (memory consumption), aka CID-2289adbfa559 (bnc#1156258).

CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).

CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7 (bnc#1161522).

CVE-2019-19046: There was a memory leak in __ipmi_bmc_register (bsc#1157304).

CVE-2019-19049: There was an unlikely memory leak in unittest_data_add (bsc#1157173).

CVE-2019-19051: A memory leak in drivers/net/wimax/i2400m/op-rfkill.c allowed attackers to cause a denial of service (memory consumption), aka CID-6f3ef5c25cc7 (bnc#1159024).

CVE-2019-19052: A memory leak in drivers/net/can/usb/gs_usb.c allowed attackers to cause a denial of service (memory consumption), aka CID-fb5be6a7b486 (bnc#1157324).

CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b (bnc#1161518).

CVE-2019-19056: A memory leak in drivers/net/wireless/marvell/mwifiex/pcie.c allowed attackers to cause a denial of service (memory consumption), aka CID-db8fd2cde932 (bnc#1157197).

CVE-2019-19057: Two memory leaks in drivers/net/wireless/marvell/mwifiex/pcie.c allowed attackers to cause a denial of service (memory consumption), aka CID-d10dcb615c8e (bnc#1157193 bsc#1157197).

CVE-2019-19058: A memory leak in drivers/net/wireless/intel/iwlwifi/fw/dbg.c allowed attackers to cause a denial of service (memory consumption), aka CID-b4b814fec1a5 (bnc#1157145).

CVE-2019-19060: A memory leak in drivers/iio/imu/adis_buffer.c allowed attackers to cause a denial of service (memory consumption), aka CID-ab612b1daf41 (bnc#1157178).

CVE-2019-19062: A memory leak in crypto/crypto_user_base.c allowed attackers to cause a denial of service (memory consumption), aka CID-ffdde5932042 (bnc#1157333).

CVE-2019-19063: Two memory leaks in drivers/net/wireless/realtek/rtlwifi/usb.c allowed attackers to cause a denial of service (memory consumption), aka CID-3f9361695113 (bnc#1157298).

CVE-2019-19065: A memory leak in drivers/infiniband/hw/hfi1/sdma.c allowed attackers to cause a denial of service (memory consumption), aka CID-34b3be18a04e (bnc#1157191).

CVE-2019-19066: A memory leak in drivers/scsi/bfa/bfad_attr.c allowed attackers to cause a denial of service (memory consumption), aka CID-0e62395da2bd (bnc#1157303).

CVE-2019-19067: There were four unlikely memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c (bnc#1157180).

CVE-2019-19068: A memory leak in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c allowed attackers to cause a denial of service (memory consumption), aka CID-a2cdd07488e6 (bnc#1157307).

CVE-2019-19073: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c allowed attackers to cause a denial of service (memory consumption), aka CID-853acf7caf10 (bnc#1157070).

CVE-2019-19074: A memory leak in drivers/net/wireless/ath/ath9k/wmi.c allowed attackers to cause a denial of service (memory consumption), aka CID-728c1e2a05e4 (bnc#1157143).

CVE-2019-19075: A memory leak in drivers/net/ieee802154/ca8210.c allowed attackers to cause a denial of service (memory consumption) by triggering ca8210_get_platform_data() failures, aka CID-6402939ec86e (bnc#1157162).

CVE-2019-19077: A memory leak in drivers/infiniband/hw/bnxt_re/ib_verbs.c allowed attackers to cause a denial of service (memory consumption), aka CID-4a9d46a9fe14 (bnc#1157171).

CVE-2019-19078: A memory leak in drivers/net/wireless/ath/ath10k/usb.c allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures, aka CID-b8d17e7d93d2 (bnc#1157032).

CVE-2019-19080: Four memory leaks in drivers/net/ethernet/netronome/nfp/flower/main.c allowed attackers to cause a denial of service (memory consumption), aka CID-8572cea1461a (bnc#1157044).

CVE-2019-19081: A memory leak in drivers/net/ethernet/netronome/nfp/flower/main.c allowed attackers to cause a denial of service (memory consumption), aka CID-8ce39eb5a67a (bnc#1157045).

CVE-2019-19082: Memory leaks were found in the *create_resource_pool() functions under drivers/gpu/drm/amd/display/dc, aka CID-104c307147ad (bnc#1157046).

CVE-2019-19083: Memory leaks were found in the *clock_source_create() functions under drivers/gpu/drm/amd/display/dc, aka CID-055e547478a1 (bnc#1157049).

CVE-2019-19227: In the AppleTalk subsystem there was a potential NULL pointer dereference because register_snap_client may return NULL. This could have led to denial of service, aka CID-9804501fa122 (bnc#1157678).

CVE-2019-19318: Mounting a crafted btrfs image twice could have caused a use-after-free (bnc#1158026).

CVE-2019-19319: A slab-out-of-bounds write access could have occured when setxattr was called after mounting of a specially crafted ext4 image (bnc#1158021).

CVE-2019-19332: An out-of-bounds memory write issue was found in the way the KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could have used this flaw to crash the system (bnc#1158827).

CVE-2019-19338: There was an incomplete fix for an issue with Transactional Synchronisation Extensions in the KVM code (bsc#1158954).

CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting could have led to a use-after-free in fs/ext4/super.c (bnc#1158819).

CVE-2019-19523: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79 (bsc#1158823).

CVE-2019-19524: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/input/ff-memless.c driver, aka CID-fa3a5a1880c9 (bsc#1158413).

CVE-2019-19525: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver, aka CID-7fd25e6fc035 (bsc#1158417).

CVE-2019-19526: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/nfc/pn533/usb.c driver, aka CID-6af3aa57a098 (bsc#1158893).

CVE-2019-19527: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver, aka CID-9c09b214f30e (bsc#1158900).

CVE-2019-19528: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver, aka CID-edc4746f253d (bsc#1158407).

CVE-2019-19529: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/can/usb/mcba_usb.c driver, aka CID-4d6636498c41 (bnc#1158381).

CVE-2019-19530: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver, aka CID-c52873e5a1ef (bsc#1158410).

CVE-2019-19531: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/yurex.c driver, aka CID-fc05481b2fca (bsc#1158445).

CVE-2019-19532: There were multiple out-of-bounds write bugs that can be caused by a malicious USB HID device, aka CID-d9d4b1e46d95 (bsc#1158824).

CVE-2019-19533: There was an info-leak bug that can be caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver, aka CID-a10feaf8c464 (bsc#1158834).

CVE-2019-19534: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_core.c driver, aka CID-f7a1337f0d29 (bsc#1158398).

CVE-2019-19535: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver, aka CID-30a8beeb3042 (bsc#1158903).

CVE-2019-19536: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_pro.c driver, aka CID-ead16e53c2f0 (bsc#1158394).

CVE-2019-19537: There was a race condition bug that can be caused by a malicious USB device in the USB character device driver layer, aka CID-303911cfc5b9 (bsc#1158904).

CVE-2019-19543: There was a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c (bnc#1158427).

CVE-2019-19767: There were multiple use-after-free errors in
__ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163 (bnc#1159297).

CVE-2019-19927: A slab-out-of-bounds read access occured when mounting a crafted f2fs filesystem image and performing some operations on it (bnc#1160147).

CVE-2019-19965: There was a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race condition, aka CID-f70267f379b5 (bnc#1159911).

CVE-2019-19966: There was a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that could have caused a denial of service, aka CID-dea37a972655 (bnc#1159841).

CVE-2019-20054: There was a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e (bnc#1159910).

CVE-2019-20095: Several memory leaks were found in drivers/net/wireless/marvell/mwifiex/cfg80211.c, aka CID-003b686ace82 (bnc#1159909).

CVE-2019-20096: There was a memory leak in __feat_register_sp() in net/dccp/feat.c, aka CID-1d3ff0950e2b (bnc#1159908).

CVE-2020-7053: There was a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c, aka CID-7dc40713618c (bnc#1160966).

CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9 (bnc#1162109).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4258-1 advisory.

    It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not     properly validate device metadata. A physically proximate attacker could use this to cause a denial of     service (system crash). (CVE-2019-15099)

    It was discovered that a race condition existed in the Virtual Video Test Driver in the Linux kernel. An     attacker with write access to /dev/video0 on a system with the vivid module loaded could possibly use this     to gain administrative privileges. (CVE-2019-18683)

    It was discovered that the btrfs file system in the Linux kernel did not properly validate metadata,     leading to a NULL pointer dereference. An attacker could use this to specially craft a file system image     that, when mounted, could cause a denial of service (system crash). (CVE-2019-18885)

    It was discovered that the crypto subsystem in the Linux kernel did not properly deallocate memory in     certain error conditions. A local attacker could use this to cause a denial of service (kernel memory     exhaustion). (CVE-2019-19050, CVE-2019-19062)

    It was discovered that the RSI 91x WLAN device driver in the Linux kernel did not properly deallocate     memory in certain error conditions. A local attacker could use this to cause a denial of service (kernel     memory exhaustion). (CVE-2019-19071)

    It was discovered that the Broadcom Netxtreme HCA device driver in the Linux kernel did not properly     deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial     of service (kernel memory exhaustion). (CVE-2019-19077)

    It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not     properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause     a denial of service (kernel memory exhaustion). (CVE-2019-19078)

    It was discovered that the Qualcomm IPC Router TUN device driver in the Linux kernel did not properly     deallocate memory in certain situations. A local attacker could possibly use this to cause a denial of     service (kernel memory exhaustion). (CVE-2019-19079)

    It was discovered that the AMD GPU device drivers in the Linux kernel did not properly deallocate memory     in certain error conditions. A local attacker could use this to possibly cause a denial of service (kernel     memory exhaustion). (CVE-2019-19082)

    Dan Carpenter discovered that the AppleTalk networking subsystem of the Linux kernel did not properly     handle certain error conditions, leading to a NULL pointer dereference. A local attacker could use this to     cause a denial of service (system crash). (CVE-2019-19227)

    Or Cohen discovered that the virtual console subsystem in the Linux kernel did not properly restrict     writes to unimplemented vcsu (unicode) devices. A local attacker could possibly use this to cause a denial     of service (system crash) or have other unspecified impacts. (CVE-2019-19252)

    It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly handle ioctl     requests to get emulated CPUID features. An attacker with access to /dev/kvm could use this to cause a     denial of service (system crash). (CVE-2019-19332)

    It was discovered that the ext4 file system implementation in the Linux kernel did not properly handle     certain conditions. An attacker could use this to specially craft an ext4 file system that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19767)

    It was discovered that the B2C2 FlexCop USB device driver in the Linux kernel did not properly validate     device metadata. A physically proximate attacker could use this to cause a denial of service (system     crash). (CVE-2019-15291)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
137516	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2020-1674)	Nessus	Huawei Local Security Checks	6/17/2020	4/25/2023	critical
131833	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:3200-1)	Nessus	SuSE Local Security Checks	12/9/2019	4/5/2024	critical
134363	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0613-1)	Nessus	SuSE Local Security Checks	3/10/2020	3/22/2024	critical
133354	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4258-1)	Nessus	Ubuntu Local Security Checks	1/30/2020	8/27/2024	high

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