usn-5579-1
Vulnerability from osv_ubuntu
Published
2022-08-24 15:13
Modified
2026-06-29 10:52
Summary
linux, linux-kvm, linux-lts-xenial vulnerabilities
Details

Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-26365)

Roger Pau Monné discovered that the Xen paravirtualization frontend in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-33740)

It was discovered that the Xen paravirtualization frontend in the Linux kernel incorrectly shared unrelated data when communicating with certain backends. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2022-33741)

References
To clipboard 

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        }
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  ],
  "aliases": [],
  "details": "Roger Pau Monn\u00e9 discovered that the Xen virtual block driver in the Linux\nkernel did not properly initialize memory pages to be used for shared\ncommunication with the backend. A local attacker could use this to expose\nsensitive information (guest kernel memory). (CVE-2022-26365)\n\nRoger Pau Monn\u00e9 discovered that the Xen paravirtualization frontend in the\nLinux kernel did not properly initialize memory pages to be used for shared\ncommunication with the backend. A local attacker could use this to expose\nsensitive information (guest kernel memory). (CVE-2022-33740)\n\nIt was discovered that the Xen paravirtualization frontend in the Linux\nkernel incorrectly shared unrelated data when communicating with certain\nbackends. A local attacker could use this to cause a denial of service\n(guest crash) or expose sensitive information (guest kernel memory).\n(CVE-2022-33741)\n\n",
  "id": "USN-5579-1",
  "modified": "2026-06-29T10:52:56Z",
  "published": "2022-08-24T15:13:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5579-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-26365"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-33740"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-33741"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-kvm, linux-lts-xenial vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2022-26365",
    "UBUNTU-CVE-2022-33740",
    "UBUNTU-CVE-2022-33741"
  ]
}



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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.