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usn-6396-2
Vulnerability from osv_ubuntu
Published
2023-10-05 12:39
Modified
2026-06-03 10:45
Summary
linux-kvm vulnerabilities
Details

It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. (CVE-2022-27672)

Daniel Moghimi discovered that some Intel(R) Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. (CVE-2022-40982)

Yang Lan discovered that the GFS2 file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious GFS2 image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-3212)

It was discovered that the NFC implementation in the Linux kernel contained a use-after-free vulnerability when performing peer-to-peer communication in certain conditions. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3863)

It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-40283)

It was discovered that some network classifier implementations in the Linux kernel contained use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4128)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-27672",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-40982",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-3212",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-3863",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-4128",
              "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-2023-40283",
              "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-4.15.0-1145-kvm",
            "binary_version": "4.15.0-1145.150"
          },
          {
            "binary_name": "linux-headers-4.15.0-1145-kvm",
            "binary_version": "4.15.0-1145.150"
          },
          {
            "binary_name": "linux-image-4.15.0-1145-kvm",
            "binary_version": "4.15.0-1145.150"
          },
          {
            "binary_name": "linux-kvm-headers-4.15.0-1145",
            "binary_version": "4.15.0-1145.150"
          },
          {
            "binary_name": "linux-kvm-tools-4.15.0-1145",
            "binary_version": "4.15.0-1145.150"
          },
          {
            "binary_name": "linux-modules-4.15.0-1145-kvm",
            "binary_version": "4.15.0-1145.150"
          },
          {
            "binary_name": "linux-tools-4.15.0-1145-kvm",
            "binary_version": "4.15.0-1145.150"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "linux-kvm",
        "purl": "pkg:deb/ubuntu/linux-kvm@4.15.0-1145.150?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.15.0-1145.150"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.15.0-1002.2",
        "4.15.0-1003.3",
        "4.15.0-1004.4",
        "4.15.0-1006.6",
        "4.15.0-1008.8",
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        "4.15.0-1035.35",
        "4.15.0-1036.36",
        "4.15.0-1038.38",
        "4.15.0-1039.39",
        "4.15.0-1042.42",
        "4.15.0-1043.43",
        "4.15.0-1044.44",
        "4.15.0-1046.46",
        "4.15.0-1047.47",
        "4.15.0-1048.48",
        "4.15.0-1050.50",
        "4.15.0-1051.51",
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        "4.15.0-1139.144",
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        "4.15.0-1141.146",
        "4.15.0-1142.147",
        "4.15.0-1143.148",
        "4.15.0-1144.149"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that some AMD x86-64 processors with SMT enabled could\nspeculatively execute instructions using a return address from a sibling\nthread. A local attacker could possibly use this to expose sensitive\ninformation. (CVE-2022-27672)\n\nDaniel Moghimi discovered that some Intel(R) Processors did not properly\nclear microarchitectural state after speculative execution of various\ninstructions. A local unprivileged user could use this to obtain to\nsensitive information. (CVE-2022-40982)\n\nYang Lan discovered that the GFS2 file system implementation in the Linux\nkernel could attempt to dereference a null pointer in some situations. An\nattacker could use this to construct a malicious GFS2 image that, when\nmounted and operated on, could cause a denial of service (system crash).\n(CVE-2023-3212)\n\nIt was discovered that the NFC implementation in the Linux kernel contained\na use-after-free vulnerability when performing peer-to-peer communication\nin certain conditions. A privileged attacker could use this to cause a\ndenial of service (system crash) or possibly expose sensitive information\n(kernel memory). (CVE-2023-3863)\n\nIt was discovered that the bluetooth subsystem in the Linux kernel did not\nproperly handle L2CAP socket release, leading to a use-after-free\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-40283)\n\nIt was discovered that some network classifier implementations in the Linux\nkernel contained use-after-free vulnerabilities. A local attacker could use\nthis to cause a denial of service (system crash) or possibly execute\narbitrary code. (CVE-2023-4128)\n",
  "id": "USN-6396-2",
  "modified": "2026-06-03T10:45:35Z",
  "published": "2023-10-05T12:39:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6396-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-27672"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-40982"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-3212"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-3863"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-4128"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-40283"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-kvm vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2022-27672",
    "UBUNTU-CVE-2022-40982",
    "UBUNTU-CVE-2023-3212",
    "UBUNTU-CVE-2023-3863",
    "UBUNTU-CVE-2023-4128",
    "UBUNTU-CVE-2023-40283"
  ]
}



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