The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4186-1 advisory.

    Stephan van Schaik, Alyssa Milburn, Sebastian sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos,     Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck     discovered that Intel processors using Transactional Synchronization Extensions (TSX) could expose memory     contents previously stored in microarchitectural buffers to a malicious process that is executing on the     same CPU core. A local attacker could use this to expose sensitive information. (CVE-2019-11135)

    It was discovered that the Intel i915 graphics chipsets allowed userspace to modify page table entries via     writes to MMIO from the Blitter Command Streamer and expose kernel memory information. A local attacker     could use this to expose sensitive information or possibly elevate privileges. (CVE-2019-0155)

    Deepak Gupta discovered that on certain Intel processors, the Linux kernel did not properly perform     invalidation on page table updates by virtual guest operating systems. A local attacker in a guest VM     could use this to cause a denial of service (host system crash). (CVE-2018-12207)

    It was discovered that the Intel i915 graphics chipsets could cause a system hang when userspace performed     a read from GT memory mapped input output (MMIO) when the product is in certain low power states. A local     attacker could use this to cause a denial of service. (CVE-2019-0154)

    Hui Peng discovered that the Atheros AR6004 USB Wi-Fi device driver for the Linux kernel did not properly     validate endpoint descriptors returned by the device. A physically proximate attacker could use this to     cause a denial of service (system crash). (CVE-2019-15098)

    It was discovered that a buffer overflow existed in the 802.11 Wi-Fi configuration interface for the Linux     kernel when handling beacon settings. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2019-16746)

    Ori Nimron discovered that the AX25 network protocol implementation in the Linux kernel did not properly     perform permissions checks. A local attacker could use this to create a raw socket. (CVE-2019-17052)

    Ori Nimron discovered that the IEEE 802.15.4 Low-Rate Wireless network protocol implementation in the     Linux kernel did not properly perform permissions checks. A local attacker could use this to create a raw     socket. (CVE-2019-17053)

    Ori Nimron discovered that the Appletalk network protocol implementation in the Linux kernel did not     properly perform permissions checks. A local attacker could use this to create a raw socket.
    (CVE-2019-17054)

    Ori Nimron discovered that the modular ISDN network protocol implementation in the Linux kernel did not     properly perform permissions checks. A local attacker could use this to create a raw socket.
    (CVE-2019-17055)

    Ori Nimron discovered that the Near field Communication (NFC) network protocol implementation in the Linux     kernel did not properly perform permissions checks. A local attacker could use this to create a raw     socket. (CVE-2019-17056)

    Nico Waisman discovered that a buffer overflow existed in the Realtek Wi-Fi driver for the Linux kernel     when handling Notice of Absence frames. A physically proximate attacker could use this to cause a denial     of service (system crash) or possibly execute arbitrary code. (CVE-2019-17666)

    Maddie Stone discovered that the Binder IPC Driver implementation in the Linux kernel contained a use-     after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2019-2215)

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.

The SUSE Linux Enterprise 12-SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional.

The Linux Kernel kvm hypervisor was adjusted to avoid page size changes in executable pages by splitting / merging huge pages into small pages as needed. More information can be found on https://www.suse.com/support/kb/doc/?id=7023735 CVE-2019-16995: Fix a memory leak in hsr_dev_finalize() if hsr_add_port failed to add a port, which may have caused denial of service (bsc#1152685).

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 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-2019-17133: cfg80211 wireless extension did not reject a long SSID IE, leading to a Buffer Overflow (bsc#1153158).

CVE-2019-16232: Fix a potential NULL pointer dereference in the Marwell libertas driver (bsc#1150465).

CVE-2019-16234: iwlwifi pcie driver did not check the alloc_workqueue return value, leading to a NULL pointer dereference. (bsc#1150452).

CVE-2019-17055: The AF_ISDN network module in the Linux kernel did not enforce CAP_NET_RAW, which meant that unprivileged users could create a raw socket (bnc#1152782).

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-2019-16413: The 9p filesystem did not protect i_size_write() properly, which caused an i_size_read() infinite loop and denial of service on SMP systems (bnc#1151347).

CVE-2019-15902: A backporting issue was discovered that re-introduced the Spectre vulnerability it had aimed to eliminate. This occurred because the backport process depends on cherry picking specific commits, and because two (correctly ordered) code lines were swapped (bnc#1149376).

CVE-2019-15291: Fixed a NULL pointer dereference issue that could be caused by a malicious USB device (bnc#1146519).

CVE-2019-15807: Fixed a memory leak in the SCSI module that could be abused to cause denial of service (bnc#1148938).

CVE-2019-13272: Fixed a mishandled the recording of the credentials of a process that wants to create a ptrace relationship, which allowed local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker).
(bnc#1140671).

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-2019-15505: An out-of-bounds issue had been fixed that could be caused by crafted USB device traffic (bnc#1147122).

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

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-2019-15216: A NULL pointer dereference was fixed that could be malicious USB device (bnc#1146361).

CVE-2019-15924: A a NULL pointer dereference has been fixed in the drivers/net/ethernet/intel/fm10k module (bnc#1149612).

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-2019-15926: An out-of-bounds access was fixed in the drivers/net/wireless/ath/ath6kl module. (bnc#1149527).

CVE-2019-15927: An out-of-bounds access was fixed in the sound/usb/mixer module (bnc#1149522).

CVE-2019-15666: There was an out-of-bounds array access in the net/xfrm module that could cause denial of service (bnc#1148394).

CVE-2017-18379: An out-of-boundary access was fixed in the drivers/nvme/target module (bnc#1143187).

CVE-2019-15219: A NULL pointer dereference was fixed that could be abused by a malicious USB device (bnc#1146519 1146524).

CVE-2019-15220: A use-after-free issue was fixed that could be caused by a malicious USB device (bnc#1146519 1146526).

CVE-2019-15221: A NULL pointer dereference was fixed that could be caused by a malicious USB device (bnc#1146519 1146529).

CVE-2019-14814: A heap-based buffer overflow was fixed in the marvell wifi chip driver. That issue allowed local users to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1146512).

CVE-2019-14815: A missing length check while parsing WMM IEs was fixed (bsc#1146512, bsc#1146514, bsc#1146516).

CVE-2019-14816: A heap-based buffer overflow in the marvell wifi chip driver was fixed. Local users would have abused this issue to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1146516).

CVE-2017-18509: An issue in net/ipv6 as fixed. By setting a specific socket option, an attacker could control a pointer in kernel land and cause an inet_csk_listen_stop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue can be triggered as root (e.g., inside a default LXC container or with the CAP_NET_ADMIN capability) or after namespace unsharing. (bnc#1145477)

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-2019-15098: A NULL pointer dereference in drivers/net/wireless/ath was fixed (bnc#1146378).

CVE-2019-15290: A NULL pointer dereference in ath6kl_usb_alloc_urb_from_pipe was fixed (bsc#1146378).

CVE-2019-15239: A incorrect patch to net/ipv4 was fixed. By adding to a write queue between disconnection and re-connection, a local attacker could trigger multiple use-after-free conditions. This could result in kernel crashes or potentially in privilege escalation.
(bnc#1146589)

CVE-2019-15212: A double-free issue was fixed in drivers/usb driver (bnc#1146391).

CVE-2016-10906: A use-after-free issue was fixed in drivers/net/ethernet/arc (bnc#1146584).

CVE-2019-15211: A use-after-free issue caused by a malicious USB device was fixed in the drivers/media/v4l2-core driver (bnc#1146519).

CVE-2019-15217: A a NULL pointer dereference issue caused by a malicious USB device was fixed in the drivers/media/usb/zr364xx driver (bnc#1146519).

CVE-2019-15214: An a use-after-free issue in the sound subsystem was fixed (bnc#1146519).

CVE-2019-15218: A NULL pointer dereference caused by a malicious USB device was fixed in the drivers/media/usb/siano driver (bnc#1146413).

CVE-2019-15215: A use-after-free issue caused by a malicious USB device was fixed in the drivers/media/usb/cpia2 driver (bnc#1146425).

CVE-2018-20976: A use-after-free issue was fixed in the fs/xfs driver (bnc#1146285).

CVE-2017-18551: An out-of-bounds write was fixed in the drivers/i2c driver (bnc#1146163).

CVE-2019-0154: An unprotected read access to i915 registers has been fixed that could have been abused to facilitate a local denial-of-service attack. (bsc#1135966)

CVE-2019-0155: A privilege escalation vulnerability has been fixed in the i915 module that allowed batch buffers from user mode to gain super user privileges. (bsc#1135967)

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 version of AOS installed on the remote host is prior to 5.15.5. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.15.5 advisory.

  - In Network Security Services (NSS) before 3.46, several cryptographic primitives had missing length     checks. In cases where the application calling the library did not perform a sanity check on the inputs it     could result in a crash due to a buffer overflow. (CVE-2019-17006)

  - Heap buffer overflow in the TFTP protocol handler in cURL 7.19.4 to 7.65.3. (CVE-2019-5482)

  - In all versions of cpio before 2.13 does not properly validate input files when generating TAR archives.
    When cpio is used to create TAR archives from paths an attacker can write to, the resulting archive may     contain files with permissions the attacker did not have or in paths he did not have access to. Extracting     those archives from a high-privilege user without carefully reviewing them may lead to the compromise of     the system. (CVE-2019-14866)

  - If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to     8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the     HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP     headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This     could lead to users seeing responses for unexpected resources. (CVE-2020-13943)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported     versions that are affected are 5.6.45 and prior, 5.7.27 and prior and 8.0.17 and prior. Easily exploitable     vulnerability allows low privileged attacker with network access via multiple protocols to compromise     MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang     or frequently repeatable crash (complete DOS) of MySQL Server. (CVE-2019-2974)

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

The 5.3.6 update contains a number of important fixes across the tree

This is a rebase to the 5.3 series

----

The 5.2.20 stable kernel update contains a number of important fixes across the tree.

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

According to the versions of the parallels-server-bm-release / vzkernel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities :

  - Kernel: NetLabel: null pointer dereference while     receiving CIPSO packet with null category may cause     kernel panic.

  - kernel: rtl_p2p_noa_ie in     drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux     kernel lacks a certain upper-bound check, leading to a     buffer overflow.

  - kernel: buffer overflow in cfg80211_mgd_wext_giwessid     in net/wireless/wext-sme.c.

  - kernel: out-of-bounds write in mpol_parse_str function     in mm/mempolicy.c.

  - kernel: use-after-free in n_tty_receive_buf_common     function in drivers/tty/n_tty.c.

  - kernel: unprivileged users able to create RAW sockets     in AF_ISDN network protocol.

  - kernel: memory leak in register_queue_kobjects() in     net/core/net-sysfs.c leads to denial of service.

  - kernel: offset2lib allows for the stack guard page to     be jumped over.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through     5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka     CID-b91ee4aa2a21. (CVE-2019-17055)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:1567 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

    * kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)

    * kernel: memory leak in the kernel_read_file function in fs/exec.c allows to cause a denial of service     (CVE-2019-8980)

    * kernel: unprivileged users able to create RAW sockets  in AF_IEEE802154 network protocol.
    (CVE-2019-17053)

    * kernel: unprivileged users able to create RAW sockets in AF_ISDN  network protocol. (CVE-2019-17055)

    * kernel: integer overflow in tcp_ack_update_rtt in net/ipv4/tcp_input.c (CVE-2019-18805)

    * kernel: information leak bug caused  by a malicious USB device in the     drivers/net/can/usb/peak_usb/pcan_usb_core.c driver (CVE-2019-19534)

    * kernel: some ipv6 protocols not encrypted over ipsec tunnel. (CVE-2020-1749)

    * Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR     (CVE-2019-10639)

    * kernel: An out-of-bounds read in drivers/scsi/qedi/qedi_dbg.c leading to crash or information disclosure     (CVE-2019-15090)

    * kernel: a NULL pointer dereference in drivers/net/wireless/ath/ath10k/usb.c leads to a crash     (CVE-2019-15099)

    * kernel: Null pointer dereference in the sound/usb/line6/pcm.c (CVE-2019-15221)

    * kernel: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in     drivers/net/wireless/marvell/mwifiex/pcie.c allows for a DoS (CVE-2019-19057)

    * kernel: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel (DOS)     (CVE-2019-19073)

    * kernel: a memory leak in the ath9k management function in allows local DoS (CVE-2019-19074)

    * kernel: when cpu.cfs_quota_us is used allows attackers to cause a denial of service against non-cpu-     bound applications (CVE-2019-19922)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * RT: update RT source tree to the RHEL-8.2 tree (BZ#1708716)

    * KVM-RT guest fails boot with emulatorsched (BZ#1712781)

    * 8 vCPU guest need max latency < 20 us with stress [RT-8.2] (BZ#1757165)

    * Request nx_huge_pages=N as default value to avoid kvm-rt guest large latency spike [rt-8] (BZ#1788352)

    * RT: Add rpm Provide of 'kernel' to indicate that this is a kernel package (BZ#1796284)

    * [RHEL8] RT kernel signed by test certificate and not Red Hat Secure Boot (BZ#1806871)

    Enhancement(s):

    * update to the upstream 5.x RT patchset (BZ#1680161)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, or information leak.

CVE-2019-2215

The syzkaller tool discovered a use-after-free vulnerability in the Android binder driver. A local user on a system with this driver enabled could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation. However, this driver is not enabled on Debian packaged kernels.

CVE-2019-10220

Various developers and researchers found that if a crafted file- system or malicious file server presented a directory with filenames including a '/' character, this could confuse and possibly defeat security checks in applications that read the directory.

The kernel will now return an error when reading such a directory, rather than passing the invalid filenames on to user-space.

CVE-2019-14895, CVE-2019-14901

ADLab of Venustech discovered potential heap buffer overflows in the mwifiex wifi driver. On systems using this driver, a malicious Wireless Access Point or adhoc/P2P peer could use these to cause a denial of service (memory corruption or crash) or possibly for remote code execution.

CVE-2019-14896, CVE-2019-14897

ADLab of Venustech discovered potential heap and stack buffer overflows in the libertas wifi driver. On systems using this driver, a malicious Wireless Access Point or adhoc/P2P peer could use these to cause a denial of service (memory corruption or crash) or possibly for remote code execution.

CVE-2019-15098

Hui Peng and Mathias Payer reported that the ath6kl wifi driver did not properly validate USB descriptors, which could lead to a NULL pointer derefernce. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).

CVE-2019-15217

The syzkaller tool discovered that the zr364xx mdia driver did not correctly handle devices without a product name string, which could lead to a NULL pointer dereference. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).

CVE-2019-15291

The syzkaller tool discovered that the b2c2-flexcop-usb media driver did not properly validate USB descriptors, which could lead to a NULL pointer dereference. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).

CVE-2019-15505

The syzkaller tool discovered that the technisat-usb2 media driver did not properly validate incoming IR packets, which could lead to a heap buffer over-read. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops) or to read sensitive information from kernel memory.

CVE-2019-16746

It was discovered that the wifi stack did not validate the content of beacon heads provided by user-space for use on a wifi interface in Access Point mode, which could lead to a heap buffer overflow. A local user permitted to configure a wifi interface could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-17052, CVE-2019-17053, CVE-2019-17054, CVE-2019-17055, CVE-2019-17056

Ori Nimron reported that various network protocol implementations

  - AX.25, IEEE 802.15.4, Appletalk, ISDN, and NFC - allowed     all users to create raw sockets. A local user could use     this to send arbitrary packets on networks using those     protocols.

CVE-2019-17133

Nicholas Waisman reported that the wifi stack did not valdiate received SSID information before copying it, which could lead to a buffer overflow if it is not validated by the driver or firmware. A malicious Wireless Access Point might be able to use this to cause a denial of service (memory corruption or crash) or for remote code execution.

CVE-2019-17666

Nicholas Waisman reported that the rtlwifi wifi drivers did not properly validate received P2P information, leading to a buffer overflow. A malicious P2P peer could use this to cause a denial of service (memory corruption or crash) or for remote code execution.

CVE-2019-19051

Navid Emamdoost discovered a potential memory leak in the i2400m wimax driver if the software rfkill operation fails. The security impact of this is unclear.

CVE-2019-19052

Navid Emamdoost discovered a potential memory leak in the gs_usb CAN driver if the open (interface-up) operation fails. The security impact of this is unclear.

CVE-2019-19056, CVE-2019-19057

Navid Emamdoost discovered potential memory leaks in the mwifiex wifi driver if the probe operation fails. The security impact of this is unclear.

CVE-2019-19062

Navid Emamdoost discovered a potential memory leak in the AF_ALG subsystem if the CRYPTO_MSG_GETALG operation fails. A local user could possibly use this to cause a denial of service (memory exhaustion).

CVE-2019-19066

Navid Emamdoost discovered a potential memory leak in the bfa SCSI driver if the get_fc_host_stats operation fails. The security impact of this is unclear.

CVE-2019-19227

Dan Carpenter reported missing error checks in the Appletalk protocol implementation that could lead to a NULL pointer dereference. The security impact of this is unclear.

CVE-2019-19332

The syzkaller tool discovered a missing bounds check in the KVM implementation for x86, which could lead to a heap buffer overflow. A local user permitted to use KVM could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19523

The syzkaller tool discovered a use-after-free bug in the adutux USB driver. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19524

The syzkaller tool discovered a race condition in the ff-memless library used by input drivers. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19527

The syzkaller tool discovered that the hiddev driver did not correctly handle races between a task opening the device and disconnection of the underlying hardware. A local user permitted to access hiddev devices, and able to add and remove USB devices, could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19530

The syzkaller tool discovered a potential use-after-free in the cdc-acm network driver. An attacker able to add USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19531

The syzkaller tool discovered a use-after-free bug in the yurex USB driver. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19532

The syzkaller tool discovered a potential heap buffer overflow in the hid-gaff input driver, which was also found to exist in many other input drivers. An attacker able to add USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19533

The syzkaller tool discovered that the ttusb-dec media driver was missing initialisation of a structure, which could leak sensitive information from kernel memory.

CVE-2019-19534, CVE-2019-19536

The syzkaller tool discovered that the peak_usb CAN driver was missing initialisation of some structures, which could leak sensitive information from kernel memory.

CVE-2019-19537

The syzkaller tool discovered race conditions in the USB stack, involving character device registration. An attacker able to add USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19767

The syzkaller tool discovered that crafted ext4 volumes could trigger a buffer overflow in the ext4 filesystem driver. An attacker able to mount such a volume could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19922

It was discovered that a change in Linux 3.16.61, 'sched/fair: Fix bandwidth timer clock drift condition', could lead to tasks being throttled before using their full quota of CPU time. A local user could use this bug to slow down other users' tasks. This change has been reverted.

CVE-2019-19947

It was discovered that the kvaser_usb CAN driver was missing initialisation of some structures, which could leak sensitive information from kernel memory.

CVE-2019-19965

Gao Chuan reported a race condition in the libsas library used by SCSI host drivers, which could lead to a NULL pointer dereference. An attacker able to add and remove SCSI devices could use this to cause a denial of service (BUG/oops).

CVE-2019-19966

The syzkaller tool discovered a missing error check in the cpia2 media driver, which could lead to a use-after-free. An attacker able to add USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

For Debian 8 'Jessie', these problems have been fixed in version 3.16.81-1.

We recommend that you upgrade your linux packages.

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

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has kernel packages installed that are affected by multiple vulnerabilities:

  - An issue was discovered in drivers/i2c/i2c-core-smbus.c in the Linux kernel before 4.14.15. There is an     out of bounds write in the function i2c_smbus_xfer_emulated. (CVE-2017-18551)

  - An issue was discovered in the Linux kernel before 5.0.5. There is a use-after-free issue when     hci_uart_register_dev() fails in hci_uart_set_proto() in drivers/bluetooth/hci_ldisc.c. (CVE-2019-15917)

  - base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through     5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka     CID-b91ee4aa2a21. (CVE-2019-17055)

  - A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel     through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-128c66429247.
    (CVE-2019-18808)

  - ** DISPUTED ** A memory leak in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c     in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by     triggering ida_simple_get() failure, aka CID-4aa7afb0ee20. NOTE: third parties dispute the relevance of     this because an attacker cannot realistically control this failure at probe time. (CVE-2019-19046)

  - ** DISPUTED ** A memory leak in the nl80211_get_ftm_responder_stats() function in net/wireless/nl80211.c     in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by     triggering nl80211hdr_put() failures, aka CID-1399c59fa929. NOTE: third parties dispute the relevance of     this because it occurs on a code path where a successful allocation has already occurred. (CVE-2019-19055)

  - An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way     the Linux kernel's 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 use     this flaw to crash the system, resulting in a denial of service. (CVE-2019-19332)

  - In the Linux kernel before 5.3.7, there is 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. (CVE-2019-19523)

  - In the Linux kernel before 5.3.12, there is 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. (CVE-2019-19524)

  - In the Linux kernel before 5.2.10, there is 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. (CVE-2019-19530)

  - In the Linux kernel before 5.3.11, there is 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. (CVE-2019-19534)

  - In the Linux kernel before 5.2.10, there is a race condition bug that can be caused by a malicious USB     device in the USB character device driver layer, aka CID-303911cfc5b9. This affects     drivers/usb/core/file.c. (CVE-2019-19537)

  - In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code     refactoring, aka CID-e7af6307a8a5. This is related to snd_timer_open and snd_timer_close_locked. The     timeri variable was originally intended to be for a newly created timer instance, but was used for a     different purpose after refactoring. (CVE-2019-19807)

  - In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode     table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7. (CVE-2019-20636)

  - In the Android kernel in i2c driver there is a possible out of bounds write due to memory corruption. This     could lead to local escalation of privilege with System execution privileges needed. User interaction is     not needed for exploitation. (CVE-2019-9454)

  - In the Android kernel in the video driver there is a use after free due to a race condition. This could     lead to local escalation of privilege with no additional execution privileges needed. User interaction is     not needed for exploitation. (CVE-2019-9458)

  - A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an     attacker with a local account to crash a trivial program and exfiltrate private kernel data.
    (CVE-2020-10732)

  - A flaw was found in the Linux kernel. An index buffer overflow during Direct IO write leading to the NFS     client to crash. In some cases, a reach out of the index after one memory allocation by kmalloc will cause     a kernel panic. The highest threat from this vulnerability is to data confidentiality and system     availability. (CVE-2020-10742)

  - A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it     incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly     only validate the first netlink message in the skb and allow or deny the rest of the messages within the     skb with the granted permission without further processing. (CVE-2020-10751)

  - ** DISPUTED ** An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c     has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing,     aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability     because the issue is a bug in parsing mount options which can only be specified by a privileged user, so     triggering the bug does not grant any powers not already held.. (CVE-2020-11565)

  - An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a     certain failure case, aka CID-83c6f2390040. (CVE-2020-12770)

  - An out-of-bounds memory write flaw was found in how the Linux kernel's Voice Over IP H.323 connection     tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote     user to crash the system, causing a denial of service. The highest threat from this vulnerability is to     confidentiality, integrity, as well as system availability. (CVE-2020-14305)

  - A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers     to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c     instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452. (CVE-2020-25212)

  - The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete     permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap     rbd block devices, aka CID-f44d04e696fe. (CVE-2020-25284)

  - A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest     when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into     accessing sensitive L1 resources that should be inaccessible to the L2 guest. (CVE-2020-2732)

  - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vc_do_resize function in     drivers/tty/vt/vt.c. (CVE-2020-8647)

  - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region     function in drivers/video/console/vgacon.c. (CVE-2020-8649)

  - An issue was discovered in the Linux kernel 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to     a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it,     aka CID-2e90ca68b0d2. (CVE-2020-9383)

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-4060 advisory.

    - [vfio] vfio/pci: Fix SR-IOV VF handling with MMIO blocking (Alex Williamson) [1820632] {CVE-2020-12888}
    - [x86] mm: Fix mremap not considering huge pmd devmap (Rafael Aquini) [1843437] {CVE-2020-10757}
    - [mm] mm, dax: check for pmd_none() after split_huge_pmd() (Rafael Aquini) [1843437] {CVE-2020-10757}
    - [mm] mm: mremap: streamline move_page_tables()s move_huge_pmd() corner case (Rafael Aquini) [1843437]     {CVE-2020-10757}
    - [mm] mm: mremap: validate input before taking lock (Rafael Aquini) [1843437] {CVE-2020-10757}
    - [wireless] mwifiex: Fix possible buffer overflows in mwifiex_ret_wmm_get_status() (Jarod Wilson)     [1844070] {CVE-2020-12654}
    - [wireless] mwifiex: Fix possible buffer overflows in mwifiex_cmd_append_vsie_tlv() (Jarod Wilson)     [1844026] {CVE-2020-12653}
    - [hid] HID: hiddev: do cleanup in failure of opening a device (Torez Smith) [1814257] {CVE-2019-19527}
    - [hid] HID: hiddev: avoid opening a disconnected device (Torez Smith) [1814257] {CVE-2019-19527}
    - [scsi] scsi: sg: add sg_remove_request in sg_write ('Ewan D. Milne') [1840699] {CVE-2020-12770}
    - [fs] fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info() (Donghai Qiao) [1832062]     {CVE-2020-10732}
    - [security] selinux: properly handle multiple messages in selinux_netlink_send() (Ondrej Mosnacek)     [1839650] {CVE-2020-10751}
    - [x86] x86/speculation: Support old struct x86_cpu_id & x86_match_cpu() kABI (Waiman Long) [1827188]     {CVE-2020-0543}
    - [documentation] x86/speculation: Add Ivy Bridge to affected list (Waiman Long) [1827188] {CVE-2020-0543}
    - [documentation] x86/speculation: Add SRBDS vulnerability and mitigation documentation (Waiman Long)     [1827188] {CVE-2020-0543}
    - [x86] x86/speculation: Add Special Register Buffer Data Sampling (SRBDS) mitigation (Waiman Long)     [1827188] {CVE-2020-0543}
    - [x86] x86/cpu: Add 'table' argument to cpu_matches() (Waiman Long) [1827188] {CVE-2020-0543}
    - [x86] x86/cpu: Add a steppings field to struct x86_cpu_id (Waiman Long) [1827188] {CVE-2020-0543}
    - [x86] x86/cpu/bugs: Convert to new matching macros (Waiman Long) [1827188] {CVE-2020-0543}
    - [x86] x86/cpu: Add consistent CPU match macros (Waiman Long) [1827188] {CVE-2020-0543}
    - [cpufreq] x86/devicetable: Move x86 specific macro out of generic code (Waiman Long) [1827188]     {CVE-2020-0543}     header (Waiman Long) [1827188] {CVE-2020-0543}
    - [vhost] vhost: Check docket sk_family instead of call getname (Vladis Dronov) [1823302] {CVE-2020-10942}
    - [vfio] vfio-pci: Invalidate mmaps and block MMIO access on disabled memory (Alex Williamson) [1820632]     {CVE-2020-12888}
    - [vfio] vfio-pci: Fault mmaps to enable vma tracking (Alex Williamson) [1820632] {CVE-2020-12888}
    - [vfio] vfio/type1: Support faulting PFNMAP vmas (Alex Williamson) [1820632] {CVE-2020-12888}
    - [vfio] vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn() (Alex Williamson) [1820632]     {CVE-2020-12888}
    - [vfio] vfio/pci: call irq_bypass_unregister_producer() before freeing irq (Alex Williamson) [1820632]     {CVE-2020-12888}
    - [vfio] vfio_pci: Enable memory accesses before calling pci_map_rom (Alex Williamson) [1820632]     {CVE-2020-12888}
    - [fs] signal: Extend exec_id to 64bits (Chris von Recklinghausen) [1834650] {CVE-2020-12826}
    - [usb] USB: core: Fix races in character device registration and deregistraion (Torez Smith) [1785065]     {CVE-2019-19537}
    - [usb] usb: cdc-acm: make sure a refcount is taken early enough (Torez Smith) [1802548] {CVE-2019-19530}
    - [usb] USB: adutux: fix use-after-free on disconnect (Torez Smith) [1798822] {CVE-2019-19523}
    - [media] media: usb:zr364xx:Fix KASAN:null-ptr-deref Read in zr364xx_vidioc_querycap (Torez Smith)     [1795597] {CVE-2019-15217}
    - [fs] ext4: fix support for inode sizes > 1024 bytes (Lukas Czerner) [1817634] {CVE-2019-19767}
    - [fs] ext4: add more paranoia checking in ext4_expand_extra_isize handling (Lukas Czerner) [1817634]     {CVE-2019-19767}
    - [fs] ext4: forbid i_extra_isize not divisible by 4 (Lukas Czerner) [1817634] {CVE-2019-19767}
    - [fs] ext4: validate the debug_want_extra_isize mount option at parse time (Lukas Czerner) [1817634]     {CVE-2019-19767}
    - [media] media: v4l: event: Add subscription to list before calling 'add' operation (Jarod Wilson)     [1828802] {CVE-2019-9458}
    - [media] media: v4l: event: Prevent freeing event subscriptions while accessed (Jarod Wilson) [1828802]     {CVE-2019-9458}
    - [crypto] crypto: user - fix memory leak in crypto_report (Vladis Dronov) [1825132] {CVE-2019-18808     CVE-2019-19062}
    - [crypto] crypto: ccp - Release all allocated memory if sha type is invalid (Vladis Dronov) [1825132]     {CVE-2019-18808}
    - [net] sit: fix memory leak in sit_init_net() (Andrea Claudi) [1830011] {CVE-2019-16994}
    - [netdrv] fjes: Handle workqueue allocation failure (Masayoshi Mizuma) [1830563] {CVE-2019-16231}
    - [mm] mm: mempolicy: require at least one nodeid for MPOL_PREFERRED (Rafael Aquini) [1834434]     {CVE-2020-11565}
    - [wireless] rtlwifi: prevent memory leak in rtl_usb_probe (Jarod Wilson) [1829847] {CVE-2019-19063}
    - [wireless] iwlwifi: dbg_ini: fix memory leak in alloc_sgtable (Jarod Wilson) [1829375] {CVE-2019-19058}
    - [net] nl80211: fix memory leak in nl80211_get_ftm_responder_stats (Jarod Wilson) [1829289]     {CVE-2019-19055}
    - [wireless] iwlwifi: pcie: fix memory leaks in iwl_pcie_ctxt_info_gen3_init (Jarod Wilson) [1829393]     {CVE-2019-19059}
    - [input] Input: add safety guards to input_set_keycode() (Chris von Recklinghausen) [1828222]     {CVE-2019-20636}
    - [scsi] scsi: libsas: delete sas port if expander discover failed (Tomas Henzl) [1829965]     {CVE-2019-15807}
    - [net] netlabel: cope with NULL catmap (Paolo Abeni) [1827240] {CVE-2020-10711}
    - [input] Input: ff-memless - kill timer in destroy() (Chris von Recklinghausen) [1815021]     {CVE-2019-19524}
    - [scsi] scsi: qla2xxx: fix a potential NULL pointer dereference ('Ewan D. Milne') [1829246]     {CVE-2019-16233}
    - [i2c] i2c: core-smbus: prevent stack corruption on read I2C_BLOCK_DATA (Vladis Dronov) [1822641]     {CVE-2017-18551}
    - [wireless] mwifiex: Fix mem leak in mwifiex_tm_cmd (Jarod Wilson) [1804971] {CVE-2019-20095}
    - [video] vgacon: Fix a UAF in vgacon_invert_region (Vladis Dronov) [1818730] {CVE-2020-8647     CVE-2020-8649}
    - [isdn] mISDN: enforce CAP_NET_RAW for raw sockets (Andrea Claudi) [1779474] {CVE-2019-17055}
    - [powerpc] powerpc/pseries/dlpar: Fix a missing check in dlpar_parse_cc_property() (Steve Best) [1806629]     {CVE-2019-12614}
    - [block] floppy: check FDC index for errors before assigning it (Ming Lei) [1815403] {CVE-2020-9383}
    - [char] ipmi: Fix memory leak in __ipmi_bmc_register (Tony Camuso) [1812836] {CVE-2019-19046}
    - [bluetooth] Bluetooth: hci_ldisc: Postpone HCI_UART_PROTO_READY bit set in hci_uart_set_proto() (Aristeu     Rozanski) [1808803] {CVE-2019-15917}
    - [x86] kvm: x86: clear stale x86_emulate_ctxt->intercept value (Jon Maloy) [1806818] {CVE-2020-2732}
    - [x86] kvm: vmx: check descriptor table exits on instruction emulation (Jon Maloy) [1806818]     {CVE-2020-2732}
    - [x86] kvm: nvmx: Check IO instruction VM-exit conditions (Jon Maloy) [1806818] {CVE-2020-2732}
    - [x86] kvm: nvmx: Refactor IO bitmap checks into helper function (Jon Maloy) [1806818] {CVE-2020-2732}
    - [x86] kvm: nvmx: Dont emulate instructions in guest mode (Jon Maloy) [1806818] {CVE-2020-2732}
    - [net] ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup (Sabrina Dubroca) [1774447]     {CVE-2020-1749}
    - [net] ipv6: add net argument to ip6_dst_lookup_flow (Sabrina Dubroca) [1774447] {CVE-2020-1749}
    - [net] ipv6: constify ip6_dst_lookup_{flow|tail}() sock arguments (Sabrina Dubroca) [1774447]     {CVE-2020-1749}
    - [net] ieee802154: enforce CAP_NET_RAW for raw sockets (Andrea Claudi) [1779494] {CVE-2019-17053}
    - [kernel] blktrace: fix dereference after null check (Ming Lei) [1798318] {CVE-2019-19768}
    - [kernel] blktrace: Protect q->blk_trace with RCU (Ming Lei) [1798318] {CVE-2019-19768}
    - [kernel] blktrace: fix trace mutex deadlock (Ming Lei) [1798318] {CVE-2019-19768}
    - [kernel] blktrace: fix unlocked registration of tracepoints (Ming Lei) [1798318] {CVE-2019-19768}
    - [kernel] blktrace: fix unlocked access to init/start-stop/teardown (Ming Lei) [1798318] {CVE-2019-19768}
    - [sound] ALSA: timer: Fix incorrectly assigned timer instance (Jaroslav Kysela) [1798457]     {CVE-2019-19807}
    - [x86] kvm: OOB memory write via kvm_dev_ioctl_get_cpuid (CVE-2019-19332) (Philippe Mathieu-Daud)     [1783455] {CVE-2019-19332}

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

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

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2020-742:11 advisory.

    * kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)
      * kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c     (CVE-2017-18551)
      * kernel: race condition in smp_task_timedout() and smp_task_done() in     drivers/scsi/libsas/sas_expander.c leads to use-after-free (CVE-2018-20836)
      * kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)
      * kernel: use after free due to race condition in the video driver leads to local privilege escalation     (CVE-2019-9458)

Tenable has extracted the preceding description block directly from the MiracleLinux 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
130966	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4186-1)	Nessus	Ubuntu Local Security Checks	11/13/2019	8/27/2024	critical
130949	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:2949-1)	Nessus	SuSE Local Security Checks	11/13/2019	1/19/2023	critical
164599	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.15.5)	Nessus	Misc.	9/1/2022	7/22/2025	critical
130297	Fedora 29 : kernel / kernel-headers / kernel-tools (2019-41e28660ae)	Nessus	Fedora Local Security Checks	10/28/2019	4/16/2024	low
136804	Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2020-037)	Nessus	Virtuozzo Local Security Checks	5/22/2020	5/13/2022	critical
222808	Linux Distros Unpatched Vulnerability : CVE-2019-17055	Nessus	Misc.	3/4/2025	7/17/2026	low
136116	RHEL 8 : kernel-rt (RHSA-2020:1567)	Nessus	Red Hat Local Security Checks	4/29/2020	11/7/2024	critical
133101	Debian DLA-2068-1 : linux security update	Nessus	Debian Local Security Checks	1/21/2020	3/29/2024	critical
154525	NewStart CGSL CORE 5.05 / MAIN 5.05 : kernel Multiple Vulnerabilities (NS-SA-2021-0169)	Nessus	NewStart CGSL Local Security Checks	10/27/2021	11/27/2023	high
180975	Oracle Linux 7 : kernel (ELSA-2020-4060)	Nessus	Oracle Linux Local Security Checks	9/7/2023	2/9/2026	high
294132	MiracleLinux 7 : kernel-3.10.0-1160.el7 (AXSA:2020-742:11)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high

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