{
  "Definition": [
    {
      "ID": "oval:org.altlinux.errata:def:20211873",
      "Version": "oval:org.altlinux.errata:def:20211873",
      "Class": "patch",
      "Metadata": {
        "Title": "ALT-PU-2021-1873: package `kernel-image-mp` update to version 5.12.8-alt1",
        "AffectedList": [
          {
            "Family": "unix",
            "Platforms": [
              "ALT Linux branch p10"
            ],
            "Products": [
              "ALT Server",
              "ALT Virtualization Server",
              "ALT Workstation",
              "ALT Workstation K",
              "ALT Education",
              "Simply Linux",
              "Starterkit"
            ]
          }
        ],
        "References": [
          {
            "RefID": "ALT-PU-2021-1873",
            "RefURL": "https://errata.altlinux.org/ALT-PU-2021-1873",
            "Source": "ALTPU"
          },
          {
            "RefID": "BDU:2021-04827",
            "RefURL": "https://bdu.fstec.ru/vul/2021-04827",
            "Source": "BDU"
          },
          {
            "RefID": "BDU:2022-04604",
            "RefURL": "https://bdu.fstec.ru/vul/2022-04604",
            "Source": "BDU"
          },
          {
            "RefID": "CVE-2021-33200",
            "RefURL": "https://nvd.nist.gov/vuln/detail/CVE-2021-33200",
            "Source": "CVE"
          },
          {
            "RefID": "CVE-2021-4157",
            "RefURL": "https://nvd.nist.gov/vuln/detail/CVE-2021-4157",
            "Source": "CVE"
          }
        ],
        "Description": "This update upgrades kernel-image-mp to version 5.12.8-alt1. \nSecurity Fix(es):\n\n * BDU:2021-04827: Уязвимость компонент kernel/bpf/verifier.c ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии до уровня root\n\n * BDU:2022-04604: Уязвимость функции decode_nfs_fh() ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии и вызвать аварийное завершение системы\n\n * CVE-2021-33200: kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux-\u003ealu_limit.\n\n * CVE-2021-4157: An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.",
        "Advisory": {
          "From": "errata.altlinux.org",
          "Severity": "High",
          "Rights": "Copyright 2024 BaseALT Ltd.",
          "Issued": {
            "Date": "2021-05-28"
          },
          "Updated": {
            "Date": "2021-05-28"
          },
          "BDUs": [
            {
              "ID": "BDU:2021-04827",
              "CVSS": "AV:L/AC:L/Au:S/C:C/I:C/A:C",
              "CVSS3": "AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "CWE": "CWE-787",
              "Href": "https://bdu.fstec.ru/vul/2021-04827",
              "Impact": "High",
              "Public": "20210525"
            },
            {
              "ID": "BDU:2022-04604",
              "CVSS": "AV:A/AC:M/Au:S/C:C/I:C/A:C",
              "CVSS3": "AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "CWE": "CWE-119",
              "Href": "https://bdu.fstec.ru/vul/2022-04604",
              "Impact": "High",
              "Public": "20210414"
            }
          ],
          "CVEs": [
            {
              "ID": "CVE-2021-33200",
              "CVSS": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
              "CVSS3": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "CWE": "CWE-787",
              "Href": "https://nvd.nist.gov/vuln/detail/CVE-2021-33200",
              "Impact": "High",
              "Public": "20210527"
            },
            {
              "ID": "CVE-2021-4157",
              "CVSS": "AV:A/AC:M/Au:S/C:C/I:C/A:C",
              "CVSS3": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "CWE": "CWE-119",
              "Href": "https://nvd.nist.gov/vuln/detail/CVE-2021-4157",
              "Impact": "High",
              "Public": "20220325"
            }
          ],
          "AffectedCPEs": {
            "CPEs": [
              "cpe:/o:alt:kworkstation:10",
              "cpe:/o:alt:workstation:10",
              "cpe:/o:alt:server:10",
              "cpe:/o:alt:server-v:10",
              "cpe:/o:alt:education:10",
              "cpe:/o:alt:slinux:10",
              "cpe:/o:alt:starterkit:p10",
              "cpe:/o:alt:kworkstation:10.1",
              "cpe:/o:alt:workstation:10.1",
              "cpe:/o:alt:server:10.1",
              "cpe:/o:alt:server-v:10.1",
              "cpe:/o:alt:education:10.1",
              "cpe:/o:alt:slinux:10.1",
              "cpe:/o:alt:starterkit:10.1",
              "cpe:/o:alt:kworkstation:10.2",
              "cpe:/o:alt:workstation:10.2",
              "cpe:/o:alt:server:10.2",
              "cpe:/o:alt:server-v:10.2",
              "cpe:/o:alt:education:10.2",
              "cpe:/o:alt:slinux:10.2",
              "cpe:/o:alt:starterkit:10.2"
            ]
          }
        }
      },
      "Criteria": {
        "Operator": "AND",
        "Criterions": [
          {
            "TestRef": "oval:org.altlinux.errata:tst:2001",
            "Comment": "ALT Linux must be installed"
          }
        ],
        "Criterias": [
          {
            "Operator": "OR",
            "Criterions": [
              {
                "TestRef": "oval:org.altlinux.errata:tst:20211873001",
                "Comment": "kernel-headers-modules-mp is earlier than 0:5.12.8-alt1"
              },
              {
                "TestRef": "oval:org.altlinux.errata:tst:20211873002",
                "Comment": "kernel-headers-mp is earlier than 0:5.12.8-alt1"
              },
              {
                "TestRef": "oval:org.altlinux.errata:tst:20211873003",
                "Comment": "kernel-image-mp is earlier than 0:5.12.8-alt1"
              }
            ]
          }
        ]
      }
    }
  ]
}