usn-4301-1
Vulnerability from osv_ubuntu
Published
2020-03-25 01:39
Modified
2026-06-03 10:45
Summary
linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-oracle-5.0, linux-azure vulnerabilities
Details

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 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 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)

References
To clipboard 

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                  "type": "Ubuntu"
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  ],
  "aliases": [],
  "details": "It was discovered that the KVM implementation in the Linux kernel, when\nparavirtual TLB flushes are enabled in guests, the hypervisor in some\nsituations could miss deferred TLB flushes or otherwise mishandle them. An\nattacker in a guest VM could use this to expose sensitive information (read\nmemory from another guest VM). (CVE-2019-3016)\n\nPaulo Bonzini discovered that the KVM hypervisor implementation in the\nLinux kernel could improperly let a nested (level 2) guest access the\nresources of a parent (level 1) guest in certain situations. An attacker\ncould use this to expose sensitive information. (CVE-2020-2732)\n\nIt was discovered that the RPMSG character device interface in the Linux\nkernel did not properly deallocate memory in certain error conditions. A\nlocal attacker could possibly use this to cause a denial of service (kernel\nmemory exhaustion). (CVE-2019-19053)\n\nIt was discovered that the Marvell Wi-Fi device driver in the Linux kernel\ndid not properly deallocate memory in certain error conditions. A local\nattacker could use this to possibly cause a denial of service (kernel\nmemory exhaustion). (CVE-2019-19056)\n\nIt was discovered that the Intel(R) Wi-Fi device driver in the Linux kernel\ndevice driver in the Linux kernel did not properly deallocate memory in\ncertain error conditions. A local attacker could possibly use this to cause\na denial of service (kernel memory exhaustion). (CVE-2019-19058,\nCVE-2019-19059)\n\nIt was discovered that the Brocade BFA Fibre Channel device driver in the\nLinux kernel did not properly deallocate memory in certain error\nconditions. A local attacker could possibly use this to cause a denial of\nservice (kernel memory exhaustion). (CVE-2019-19066)\n\nIt was discovered that the Realtek RTL8xxx USB Wi-Fi device driver in the\nLinux kernel did not properly deallocate memory in certain error\nconditions. A local attacker could possibly use this to cause a denial of\nservice (kernel memory exhaustion). (CVE-2019-19068)\n",
  "id": "USN-4301-1",
  "modified": "2026-06-03T10:45:20Z",
  "published": "2020-03-25T01:39:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4301-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3016"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19053"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19056"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19058"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19059"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19066"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19068"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-2732"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-oracle-5.0, linux-azure vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2019-3016",
    "UBUNTU-CVE-2019-19053",
    "UBUNTU-CVE-2019-19056",
    "UBUNTU-CVE-2019-19058",
    "UBUNTU-CVE-2019-19059",
    "UBUNTU-CVE-2019-19066",
    "UBUNTU-CVE-2019-19068",
    "UBUNTU-CVE-2020-2732"
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.