The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4300-1 advisory.

    It was discovered that the KVM implementation in the Linux kernel, when paravirtual TLB flushes are     enabled in guests, the hypervisor in some situations could miss deferred TLB flushes or otherwise     mishandle them. An attacker in a guest VM could use this to expose sensitive information (read memory from     another guest VM). (CVE-2019-3016)

    Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a     nested (level 2) guest access the resources of a parent (level 1) guest in certain situations. An attacker     could use this to expose sensitive information. (CVE-2020-2732)

    It was discovered that the Afatech AF9005 DVB-T 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-2019-18809)

    It was discovered that the Intel(R) XL710 Ethernet Controller 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-2019-19043)

    It was discovered that the RPMSG character device interface 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-2019-19053)

    It was discovered that the Marvell Wi-Fi device driver 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-2019-19056)

    It was discovered that the Intel(R) Wi-Fi device driver in the Linux kernel 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-2019-19058, CVE-2019-19059)

    It was discovered that the Serial Peripheral Interface (SPI) driver in the Linux kernel 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-2019-19064)

    It was discovered that the Brocade BFA Fibre Channel 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-2019-19066)

    It was discovered that the Realtek RTL8xxx USB Wi-Fi 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-2019-19068)

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.

Detections

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Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4300-1)

medium Nessus Plugin ID 134658

Version 1.9