usn-7506-4
Vulnerability from osv_ubuntu
Published
2025-05-13 07:32
Modified
2026-06-03 10:46
Summary
linux-lts-xenial vulnerabilities
Details

Demi Marie Obenour and Simon Gaiser discovered that several Xen para- virtualization device frontends did not properly restrict the access rights of device backends. An attacker could possibly use a malicious Xen backend to gain access to memory pages of a guest VM or cause a denial of service in the guest. (CVE-2022-23041)

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Hardware crypto device drivers; - GPU drivers; - IIO subsystem; - Media drivers; - Network drivers; - SCSI subsystem; - SPI subsystem; - USB Gadget drivers; - Ceph distributed file system; - File systems infrastructure; - JFS file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - NILFS2 file system; - SMB network file system; - CAN network layer; - IPv6 networking; - MAC80211 subsystem; - Netfilter; - Netlink; - Network traffic control; - SCTP protocol; - TIPC protocol; (CVE-2024-46771, CVE-2021-47500, CVE-2024-56631, CVE-2021-47219, CVE-2021-47163, CVE-2024-50256, CVE-2024-56650, CVE-2024-46780, CVE-2021-47506, CVE-2024-26996, CVE-2025-21971, CVE-2021-47587, CVE-2021-47245, CVE-2024-56598, CVE-2021-46959, CVE-2024-26974, CVE-2024-56642, CVE-2023-52741, CVE-2021-47150, CVE-2024-53173, CVE-2024-26915, CVE-2024-36934, CVE-2024-56770, CVE-2024-53063, CVE-2021-47191, CVE-2024-26689, CVE-2024-53066, CVE-2024-35864, CVE-2024-50237, CVE-2024-53140, CVE-2024-49944)

References
https://ubuntu.com/security/notices/USN-7506-4 ADVISORY
https://ubuntu.com/security/CVE-2021-46959 REPORT
https://ubuntu.com/security/CVE-2021-47150 REPORT
https://ubuntu.com/security/CVE-2021-47163 REPORT
https://ubuntu.com/security/CVE-2021-47191 REPORT
https://ubuntu.com/security/CVE-2021-47219 REPORT
https://ubuntu.com/security/CVE-2021-47245 REPORT
https://ubuntu.com/security/CVE-2021-47500 REPORT
https://ubuntu.com/security/CVE-2021-47506 REPORT
https://ubuntu.com/security/CVE-2021-47587 REPORT
https://ubuntu.com/security/CVE-2022-23041 REPORT
https://ubuntu.com/security/CVE-2023-52741 REPORT
https://ubuntu.com/security/CVE-2024-26689 REPORT
https://ubuntu.com/security/CVE-2024-26915 REPORT
https://ubuntu.com/security/CVE-2024-26974 REPORT
https://ubuntu.com/security/CVE-2024-26996 REPORT
https://ubuntu.com/security/CVE-2024-35864 REPORT
https://ubuntu.com/security/CVE-2024-36934 REPORT
https://ubuntu.com/security/CVE-2024-46771 REPORT
https://ubuntu.com/security/CVE-2024-46780 REPORT
https://ubuntu.com/security/CVE-2024-49944 REPORT
https://ubuntu.com/security/CVE-2024-50237 REPORT
https://ubuntu.com/security/CVE-2024-50256 REPORT
https://ubuntu.com/security/CVE-2024-53063 REPORT
https://ubuntu.com/security/CVE-2024-53066 REPORT
https://ubuntu.com/security/CVE-2024-53140 REPORT
https://ubuntu.com/security/CVE-2024-53173 REPORT
https://ubuntu.com/security/CVE-2024-56598 REPORT
https://ubuntu.com/security/CVE-2024-56631 REPORT
https://ubuntu.com/security/CVE-2024-56642 REPORT
https://ubuntu.com/security/CVE-2024-56650 REPORT
https://ubuntu.com/security/CVE-2024-56770 REPORT
https://ubuntu.com/security/CVE-2025-21971 REPORT

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-46959",
              "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-2021-47150",
              "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-2021-47163",
              "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-2021-47191",
              "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-2021-47219",
              "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-2021-47245",
              "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-2021-47500",
              "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-2021-47506",
              "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": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-47587",
              "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-2022-23041",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-52741",
              "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-2024-26689",
              "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": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-26915",
              "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-2024-26974",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-26996",
              "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-2024-35864",
              "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": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-36934",
              "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-2024-46771",
              "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-2024-46780",
              "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-2024-49944",
              "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-2024-50237",
              "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": "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-2024-50256",
              "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": "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-2024-53063",
              "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-53066",
              "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": "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-2024-53140",
              "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": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-53173",
              "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": "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-2024-56598",
              "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-56631",
              "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": "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-2024-56642",
              "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": "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-2024-56650",
              "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": "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-2024-56770",
              "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": "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-2025-21971",
              "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "block-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "crypto-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "fat-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "fb-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "firewire-core-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "floppy-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "fs-core-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "fs-secondary-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "input-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "ipmi-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "irda-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "kernel-image-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-buildinfo-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-buildinfo-4.4.0-268-lowlatency",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-4.4.0-268-lowlatency",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-headers-4.4.0-268",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-headers-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-headers-4.4.0-268-lowlatency",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-image-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-4.4.0-268-lowlatency",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-lts-xenial-cloud-tools-4.4.0-268",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-lts-xenial-tools-4.4.0-268",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-lts-xenial-udebs-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-modules-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-modules-4.4.0-268-lowlatency",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-modules-extra-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-tools-4.4.0-268-generic",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "linux-tools-4.4.0-268-lowlatency",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "md-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "message-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "mouse-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "multipath-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "nfs-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "nic-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "nic-pcmcia-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "nic-shared-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "nic-usb-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "parport-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "pata-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "pcmcia-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "pcmcia-storage-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "plip-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "ppp-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "sata-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "scsi-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "serial-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "speakup-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "storage-core-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "usb-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "virtio-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          },
          {
            "binary_name": "vlan-modules-4.4.0-268-generic-di",
            "binary_version": "4.4.0-268.302~14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "linux-lts-xenial",
        "purl": "pkg:deb/ubuntu/linux-lts-xenial@4.4.0-268.302~14.04.1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.4.0-268.302~14.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.0-13.29~14.04.1",
        "4.4.0-14.30~14.04.2",
        "4.4.0-15.31~14.04.1",
        "4.4.0-18.34~14.04.1",
        "4.4.0-21.37~14.04.1",
        "4.4.0-22.39~14.04.1",
        "4.4.0-22.40~14.04.1",
        "4.4.0-24.43~14.04.1",
        "4.4.0-28.47~14.04.1",
        "4.4.0-31.50~14.04.1",
        "4.4.0-34.53~14.04.1",
        "4.4.0-36.55~14.04.1",
        "4.4.0-38.57~14.04.1",
        "4.4.0-42.62~14.04.1",
        "4.4.0-45.66~14.04.1",
        "4.4.0-47.68~14.04.1",
        "4.4.0-51.72~14.04.1",
        "4.4.0-53.74~14.04.1",
        "4.4.0-57.78~14.04.1",
        "4.4.0-59.80~14.04.1",
        "4.4.0-62.83~14.04.1",
        "4.4.0-63.84~14.04.2",
        "4.4.0-64.85~14.04.1",
        "4.4.0-66.87~14.04.1",
        "4.4.0-67.88~14.04.1",
        "4.4.0-70.91~14.04.1",
        "4.4.0-71.92~14.04.1",
        "4.4.0-72.93~14.04.1",
        "4.4.0-75.96~14.04.1",
        "4.4.0-78.99~14.04.2",
        "4.4.0-79.100~14.04.1",
        "4.4.0-81.104~14.04.1",
        "4.4.0-83.106~14.04.1",
        "4.4.0-87.110~14.04.1",
        "4.4.0-89.112~14.04.1",
        "4.4.0-91.114~14.04.1",
        "4.4.0-92.115~14.04.1",
        "4.4.0-93.116~14.04.1",
        "4.4.0-96.119~14.04.1",
        "4.4.0-97.120~14.04.1",
        "4.4.0-98.121~14.04.1",
        "4.4.0-101.124~14.04.1",
        "4.4.0-103.126~14.04.1",
        "4.4.0-104.127~14.04.1",
        "4.4.0-108.131~14.04.1",
        "4.4.0-109.132~14.04.1",
        "4.4.0-111.134~14.04.1",
        "4.4.0-112.135~14.04.1",
        "4.4.0-116.140~14.04.1",
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        "4.4.0-121.145~14.04.1",
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        "4.4.0-127.153~14.04.1",
        "4.4.0-128.154~14.04.1",
        "4.4.0-130.156~14.04.1",
        "4.4.0-131.157~14.04.1",
        "4.4.0-133.159~14.04.1",
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        "4.4.0-135.161~14.04.1",
        "4.4.0-137.163~14.04.1",
        "4.4.0-138.164~14.04.1",
        "4.4.0-139.165~14.04.1",
        "4.4.0-140.166~14.04.1",
        "4.4.0-141.167~14.04.1",
        "4.4.0-142.168~14.04.1",
        "4.4.0-143.169~14.04.2",
        "4.4.0-144.170~14.04.1",
        "4.4.0-146.172~14.04.1",
        "4.4.0-148.174~14.04.1",
        "4.4.0-150.176~14.04.1",
        "4.4.0-151.178~14.04.1",
        "4.4.0-154.181~14.04.1",
        "4.4.0-157.185~14.04.1",
        "4.4.0-159.187~14.04.1",
        "4.4.0-161.189~14.04.1",
        "4.4.0-164.192~14.04.1",
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        "4.4.0-166.195~14.04.1",
        "4.4.0-168.197~14.04.1",
        "4.4.0-169.198~14.04.1",
        "4.4.0-170.199~14.04.1",
        "4.4.0-171.200~14.04.1",
        "4.4.0-173.203~14.04.1",
        "4.4.0-174.204~14.04.1",
        "4.4.0-176.206~14.04.1",
        "4.4.0-177.207~14.04.1",
        "4.4.0-178.208~14.04.1",
        "4.4.0-179.209~14.04.1",
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        "4.4.0-185.215~14.04.1",
        "4.4.0-186.216~14.04.1",
        "4.4.0-187.217~14.04.1",
        "4.4.0-189.219~14.04.1",
        "4.4.0-190.220~14.04.1",
        "4.4.0-193.224~14.04.1",
        "4.4.0-194.226~14.04.1",
        "4.4.0-197.229~14.04.1",
        "4.4.0-198.230~14.04.1",
        "4.4.0-200.232~14.04.1",
        "4.4.0-201.233~14.04.1",
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        "4.4.0-210.242~14.04.1",
        "4.4.0-211.243~14.04.1",
        "4.4.0-212.244~14.04.1",
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        "4.4.0-214.246~14.04.1",
        "4.4.0-215.247~14.04.1",
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        "4.4.0-219.252~14.04.1",
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        "4.4.0-224.257~14.04.1",
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        "4.4.0-240.274~14.04.1",
        "4.4.0-241.275~14.04.1",
        "4.4.0-242.276~14.04.1",
        "4.4.0-243.277~14.04.1",
        "4.4.0-244.278~14.04.1",
        "4.4.0-245.279~14.04.1",
        "4.4.0-246.280~14.04.1",
        "4.4.0-248.282~14.04.1",
        "4.4.0-250.284~14.04.1",
        "4.4.0-251.285~14.04.1",
        "4.4.0-252.286~14.04.1",
        "4.4.0-253.287~14.04.1",
        "4.4.0-254.288~14.04.1",
        "4.4.0-256.290~14.04.1",
        "4.4.0-257.291~14.04.1",
        "4.4.0-258.292~14.04.2",
        "4.4.0-259.293~14.04.1",
        "4.4.0-260.294~14.04.1",
        "4.4.0-261.295~14.04.1",
        "4.4.0-262.296~14.04.1",
        "4.4.0-263.297~14.04.1",
        "4.4.0-264.298~14.04.1",
        "4.4.0-266.300~14.04.1",
        "4.4.0-267.301~14.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Demi Marie Obenour and Simon Gaiser discovered that several Xen para-\nvirtualization device frontends did not properly restrict the access rights\nof device backends. An attacker could possibly use a malicious Xen backend\nto gain access to memory pages of a guest VM or cause a denial of service\nin the guest. (CVE-2022-23041)\n\nSeveral security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Hardware crypto device drivers;\n  - GPU drivers;\n  - IIO subsystem;\n  - Media drivers;\n  - Network drivers;\n  - SCSI subsystem;\n  - SPI subsystem;\n  - USB Gadget drivers;\n  - Ceph distributed file system;\n  - File systems infrastructure;\n  - JFS file system;\n  - Network file system (NFS) client;\n  - Network file system (NFS) server daemon;\n  - NILFS2 file system;\n  - SMB network file system;\n  - CAN network layer;\n  - IPv6 networking;\n  - MAC80211 subsystem;\n  - Netfilter;\n  - Netlink;\n  - Network traffic control;\n  - SCTP protocol;\n  - TIPC protocol;\n(CVE-2024-46771, CVE-2021-47500, CVE-2024-56631, CVE-2021-47219,\nCVE-2021-47163, CVE-2024-50256, CVE-2024-56650, CVE-2024-46780,\nCVE-2021-47506, CVE-2024-26996, CVE-2025-21971, CVE-2021-47587,\nCVE-2021-47245, CVE-2024-56598, CVE-2021-46959, CVE-2024-26974,\nCVE-2024-56642, CVE-2023-52741, CVE-2021-47150, CVE-2024-53173,\nCVE-2024-26915, CVE-2024-36934, CVE-2024-56770, CVE-2024-53063,\nCVE-2021-47191, CVE-2024-26689, CVE-2024-53066, CVE-2024-35864,\nCVE-2024-50237, CVE-2024-53140, CVE-2024-49944)\n",
  "id": "USN-7506-4",
  "modified": "2026-06-03T10:46:03Z",
  "published": "2025-05-13T07:32:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7506-4"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-46959"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47150"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47163"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47191"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47219"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47245"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47500"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47506"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47587"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-23041"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-52741"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-26689"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-26915"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-26974"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-26996"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-35864"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-36934"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-46771"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-46780"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-49944"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-50237"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-50256"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-53063"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-53066"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-53140"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-53173"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-56598"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-56631"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-56642"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-56650"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-56770"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-21971"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-lts-xenial vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-46959",
    "UBUNTU-CVE-2021-47150",
    "UBUNTU-CVE-2021-47163",
    "UBUNTU-CVE-2021-47191",
    "UBUNTU-CVE-2021-47219",
    "UBUNTU-CVE-2021-47245",
    "UBUNTU-CVE-2021-47500",
    "UBUNTU-CVE-2021-47506",
    "UBUNTU-CVE-2021-47587",
    "UBUNTU-CVE-2022-23041",
    "UBUNTU-CVE-2023-52741",
    "UBUNTU-CVE-2024-26689",
    "UBUNTU-CVE-2024-26915",
    "UBUNTU-CVE-2024-26974",
    "UBUNTU-CVE-2024-26996",
    "UBUNTU-CVE-2024-35864",
    "UBUNTU-CVE-2024-36934",
    "UBUNTU-CVE-2024-46771",
    "UBUNTU-CVE-2024-46780",
    "UBUNTU-CVE-2024-49944",
    "UBUNTU-CVE-2024-50237",
    "UBUNTU-CVE-2024-50256",
    "UBUNTU-CVE-2024-53063",
    "UBUNTU-CVE-2024-53066",
    "UBUNTU-CVE-2024-53140",
    "UBUNTU-CVE-2024-53173",
    "UBUNTU-CVE-2024-56598",
    "UBUNTU-CVE-2024-56631",
    "UBUNTU-CVE-2024-56642",
    "UBUNTU-CVE-2024-56650",
    "UBUNTU-CVE-2024-56770",
    "UBUNTU-CVE-2025-21971"
  ]
}



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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.

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Detection rules are retrieved from Rulezet.

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