usn-5624-1
Vulnerability from osv_ubuntu
Published
2022-09-21 09:46
Modified
2026-06-03 10:45
Summary
linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-kvm, linux-lowlatency vulnerabilities
Details

It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655)

Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux kernel's Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-2318)

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, CVE-2022-33742)

Jan Beulich discovered that the Xen network device frontend driver in the Linux kernel incorrectly handled socket buffers (skb) references when communicating with certain backends. A local attacker could use this to cause a denial of service (guest crash). (CVE-2022-33743)

Oleksandr Tyshchenko discovered that the Xen paravirtualization platform in the Linux kernel on ARM platforms contained a race condition in certain situations. An attacker in a guest VM could use this to cause a denial of service in the host OS. (CVE-2022-33744)

It was discovered that the virtio RPMSG bus driver in the Linux kernel contained a double-free vulnerability in certain error conditions. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-34494, CVE-2022-34495)

Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter subsystem in the Linux kernel did not properly handle rules that truncated packets below the packet header size. When such rules are in place, a remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-36946)

References
To clipboard 

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      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-33655",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-2318",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-26365",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-33740",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-33741",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-33742",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-33743",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-33744",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-34494",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-34495",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-36946",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.15.0-48-lowlatency",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-buildinfo-5.15.0-48-lowlatency-64k",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-cloud-tools-5.15.0-48-lowlatency",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-headers-5.15.0-48-lowlatency",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-headers-5.15.0-48-lowlatency-64k",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-image-unsigned-5.15.0-48-lowlatency",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-image-unsigned-5.15.0-48-lowlatency-64k",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-lowlatency-cloud-tools-5.15.0-48",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-lowlatency-cloud-tools-common",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-lowlatency-headers-5.15.0-48",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-lowlatency-tools-5.15.0-48",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-lowlatency-tools-common",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-lowlatency-tools-host",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-modules-5.15.0-48-lowlatency",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-modules-5.15.0-48-lowlatency-64k",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-modules-iwlwifi-5.15.0-48-lowlatency",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-tools-5.15.0-48-lowlatency",
            "binary_version": "5.15.0-48.54"
          },
          {
            "binary_name": "linux-tools-5.15.0-48-lowlatency-64k",
            "binary_version": "5.15.0-48.54"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "linux-lowlatency",
        "purl": "pkg:deb/ubuntu/linux-lowlatency@5.15.0-48.54?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.15.0-48.54"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.0-22.22",
        "5.15.0-23.23",
        "5.15.0-24.24",
        "5.15.0-27.28",
        "5.15.0-30.31",
        "5.15.0-33.34",
        "5.15.0-35.36",
        "5.15.0-37.39",
        "5.15.0-39.42",
        "5.15.0-40.43",
        "5.15.0-41.44",
        "5.15.0-43.46",
        "5.15.0-46.49",
        "5.15.0-47.53"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the framebuffer driver on the Linux kernel did not\nverify size limits when changing font or screen size, leading to an out-of-\nbounds write. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2021-33655)\n\nDuoming Zhou discovered that race conditions existed in the timer handling\nimplementation of the Linux kernel\u0027s Rose X.25 protocol layer, resulting in\nuse-after-free vulnerabilities. A local attacker could use this to cause a\ndenial of service (system crash). (CVE-2022-2318)\n\nRoger 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, CVE-2022-33742)\n\nJan Beulich discovered that the Xen network device frontend driver in the\nLinux kernel incorrectly handled socket buffers (skb) references when\ncommunicating with certain backends. A local attacker could use this to\ncause a denial of service (guest crash). (CVE-2022-33743)\n\nOleksandr Tyshchenko discovered that the Xen paravirtualization platform in\nthe Linux kernel on ARM platforms contained a race condition in certain\nsituations. An attacker in a guest VM could use this to cause a denial of\nservice in the host OS. (CVE-2022-33744)\n\nIt was discovered that the virtio RPMSG bus driver in the Linux kernel\ncontained a double-free vulnerability in certain error conditions. A local\nattacker could possibly use this to cause a denial of service (system\ncrash). (CVE-2022-34494, CVE-2022-34495)\n\nDomingo Dirutigliano and Nicola Guerrera discovered that the netfilter\nsubsystem in the Linux kernel did not properly handle rules that truncated\npackets below the packet header size. When such rules are in place, a\nremote attacker could possibly use this to cause a denial of service\n(system crash). (CVE-2022-36946)\n",
  "id": "USN-5624-1",
  "modified": "2026-06-03T10:45:30Z",
  "published": "2022-09-21T09:46:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5624-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-33655"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-2318"
    },
    {
      "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"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-33742"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-33743"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-33744"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-34494"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-34495"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-36946"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-kvm, linux-lowlatency vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-33655",
    "UBUNTU-CVE-2022-2318",
    "UBUNTU-CVE-2022-26365",
    "UBUNTU-CVE-2022-33740",
    "UBUNTU-CVE-2022-33741",
    "UBUNTU-CVE-2022-33742",
    "UBUNTU-CVE-2022-33743",
    "UBUNTU-CVE-2022-33744",
    "UBUNTU-CVE-2022-34494",
    "UBUNTU-CVE-2022-34495",
    "UBUNTU-CVE-2022-36946"
  ]
}



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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.