{
  "threat_severity" : "Important",
  "public_date" : "2022-05-31T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root",
    "id" : "2092427",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2092427"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.", "A use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege escalation issue." ],
  "statement" : "The latest kernel in RHCOS is kernel-4.18.0-305.49.1.el8 which does not contain the vulnerable code and is not affected, also OCP v4.9 or earlier are not affected.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2022-06-28T00:00:00Z",
    "advisory" : "RHSA-2022:5236",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-1160.71.1.rt56.1212.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2022-06-28T00:00:00Z",
    "advisory" : "RHSA-2022:5216",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2022-06-28T00:00:00Z",
    "advisory" : "RHSA-2022:5232",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-1160.71.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Advanced Update Support",
    "release_date" : "2022-08-02T00:00:00Z",
    "advisory" : "RHSA-2022:5806",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.3",
    "package" : "kernel-0:3.10.0-514.104.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Advanced Update Support",
    "release_date" : "2022-08-02T00:00:00Z",
    "advisory" : "RHSA-2022:5805",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.4",
    "package" : "kernel-0:3.10.0-693.104.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)",
    "release_date" : "2022-08-02T00:00:00Z",
    "advisory" : "RHSA-2022:5802",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.6",
    "package" : "kernel-0:3.10.0-957.95.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Telco Extended Update Support",
    "release_date" : "2022-08-02T00:00:00Z",
    "advisory" : "RHSA-2022:5802",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.6",
    "package" : "kernel-0:3.10.0-957.95.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions",
    "release_date" : "2022-08-02T00:00:00Z",
    "advisory" : "RHSA-2022:5802",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.6",
    "package" : "kernel-0:3.10.0-957.95.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions",
    "release_date" : "2022-08-02T00:00:00Z",
    "advisory" : "RHSA-2022:5804",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.6",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Advanced Update Support",
    "release_date" : "2022-08-16T00:00:00Z",
    "advisory" : "RHSA-2022:6073",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.7",
    "package" : "kernel-0:3.10.0-1062.68.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Telco Extended Update Support",
    "release_date" : "2022-08-16T00:00:00Z",
    "advisory" : "RHSA-2022:6073",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.7",
    "package" : "kernel-0:3.10.0-1062.68.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions",
    "release_date" : "2022-08-16T00:00:00Z",
    "advisory" : "RHSA-2022:6073",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.7",
    "package" : "kernel-0:3.10.0-1062.68.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions",
    "release_date" : "2022-08-16T00:00:00Z",
    "advisory" : "RHSA-2022:6075",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.7",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-08-02T00:00:00Z",
    "advisory" : "RHSA-2022:5834",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-372.19.1.rt7.176.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-08-03T00:00:00Z",
    "advisory" : "RHSA-2022:5819",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-372.19.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-08-03T00:00:00Z",
    "advisory" : "RHSA-2022:5839",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions",
    "release_date" : "2022-07-19T00:00:00Z",
    "advisory" : "RHSA-2022:5636",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.1",
    "package" : "kernel-0:4.18.0-147.70.1.el8_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions",
    "release_date" : "2022-07-19T00:00:00Z",
    "advisory" : "RHSA-2022:5648",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.1",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2022-06-28T00:00:00Z",
    "advisory" : "RHSA-2022:5224",
    "cpe" : "cpe:/a:redhat:rhel_eus:8.2::nfv",
    "package" : "kernel-rt-0:4.18.0-193.87.1.rt13.137.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2022-06-28T00:00:00Z",
    "advisory" : "RHSA-2022:5220",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.2",
    "package" : "kernel-0:4.18.0-193.87.1.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2022-07-01T00:00:00Z",
    "advisory" : "RHSA-2022:5476",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.2",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2022-07-19T00:00:00Z",
    "advisory" : "RHSA-2022:5633",
    "cpe" : "cpe:/a:redhat:rhel_eus:8.4::nfv",
    "package" : "kernel-rt-0:4.18.0-305.57.1.rt7.129.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2022-07-19T00:00:00Z",
    "advisory" : "RHSA-2022:5626",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.4",
    "package" : "kernel-0:4.18.0-305.57.1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2022-07-19T00:00:00Z",
    "advisory" : "RHSA-2022:5641",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.4",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-07-01T00:00:00Z",
    "advisory" : "RHSA-2022:5249",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-70.17.1.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-06-28T00:00:00Z",
    "advisory" : "RHSA-2022:5267",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9::nfv",
    "package" : "kernel-rt-0:5.14.0-70.17.1.rt21.89.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-06-28T00:00:00Z",
    "advisory" : "RHSA-2022:5214",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-07-01T00:00:00Z",
    "advisory" : "RHSA-2022:5249",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-70.17.1.el9_0"
  }, {
    "product_name" : "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7",
    "release_date" : "2022-07-01T00:00:00Z",
    "advisory" : "RHSA-2022:5439",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7::hypervisor",
    "package" : "redhat-virtualization-host-0:4.3.23-20220622.0.el7_9"
  }, {
    "product_name" : "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
    "release_date" : "2022-08-03T00:00:00Z",
    "advisory" : "RHSA-2022:5819",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4.4::el8",
    "package" : "kernel-0:4.18.0-372.19.1.el8_6"
  }, {
    "product_name" : "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
    "release_date" : "2022-09-19T00:00:00Z",
    "advisory" : "RHSA-2022:6551",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4.4::el8",
    "package" : "redhat-virtualization-host-0:4.5.2-202209140405_8.6"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-32250\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-32250\nhttps://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd\nhttps://www.openwall.com/lists/oss-security/2022/05/31/1" ],
  "name" : "CVE-2022-32250",
  "mitigation" : {
    "value" : "In order to trigger the issue, it requires the ability to create user/net namespaces.\nOn non-containerized deployments of Red Hat Enterprise Linux 8, you can disable user namespaces by setting user.max_user_namespaces to 0:\n# echo \"user.max_user_namespaces=0\" > /etc/sysctl.d/userns.conf\n# sysctl -p /etc/sysctl.d/userns.conf\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.",
    "lang" : "en:us"
  },
  "csaw" : false
}