{
  "threat_severity" : "Important",
  "public_date" : "2021-01-28T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Use after free via PI futex state",
    "id" : "1922249",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1922249"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.0",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.", "A flaw was found in the Linux kernel. A use-after-free memory flaw in the Fast Userspace Mutexes functionality allowing a local user to crash the system or escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6 Extended Lifecycle Support",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2735",
    "cpe" : "cpe:/o:redhat:rhel_els:6",
    "package" : "kernel-0:2.6.32-754.41.2.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2021-06-08T00:00:00Z",
    "advisory" : "RHSA-2021:2316",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-1160.31.1.rt56.1169.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2021-04-27T00:00:00Z",
    "advisory" : "RHSA-2021:1379",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-alt-0:4.14.0-115.36.1.el7a"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2021-06-08T00:00:00Z",
    "advisory" : "RHSA-2021:2285",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2021-06-08T00:00:00Z",
    "advisory" : "RHSA-2021:2314",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-1160.31.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.2 Advanced Update Support",
    "release_date" : "2021-08-31T00:00:00Z",
    "advisory" : "RHSA-2021:3399",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.2",
    "package" : "kernel-0:3.10.0-327.100.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Advanced Update Support",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2733",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.3",
    "package" : "kernel-0:3.10.0-514.90.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Advanced Update Support",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2732",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.4",
    "package" : "kernel-0:3.10.0-693.90.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Telco Extended Update Support",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2732",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.4",
    "package" : "kernel-0:3.10.0-693.90.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2732",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.4",
    "package" : "kernel-0:3.10.0-693.90.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2730",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.6",
    "package" : "kernel-0:3.10.0-957.78.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Telco Extended Update Support",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2730",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.6",
    "package" : "kernel-0:3.10.0-957.78.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions",
    "release_date" : "2021-07-20T00:00:00Z",
    "advisory" : "RHSA-2021:2730",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.6",
    "package" : "kernel-0:3.10.0-957.78.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions",
    "release_date" : "2021-07-21T00:00:00Z",
    "advisory" : "RHSA-2021:2731",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.6",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Advanced Update Support",
    "release_date" : "2021-09-14T00:00:00Z",
    "advisory" : "RHSA-2021:3522",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.7",
    "package" : "kernel-0:3.10.0-1062.56.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Telco Extended Update Support",
    "release_date" : "2021-09-14T00:00:00Z",
    "advisory" : "RHSA-2021:3522",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.7",
    "package" : "kernel-0:3.10.0-1062.56.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions",
    "release_date" : "2021-09-14T00:00:00Z",
    "advisory" : "RHSA-2021:3522",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.7",
    "package" : "kernel-0:3.10.0-1062.56.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions",
    "release_date" : "2021-09-14T00:00:00Z",
    "advisory" : "RHSA-2021:3523",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.7",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-04-06T00:00:00Z",
    "advisory" : "RHSA-2021:1081",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-240.22.1.rt7.77.el8_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-04-06T00:00:00Z",
    "advisory" : "RHSA-2021:1093",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-240.22.1.el8_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Extended Update Support",
    "release_date" : "2021-05-25T00:00:00Z",
    "advisory" : "RHSA-2021:2099",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.1",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Extended Update Support",
    "release_date" : "2021-05-25T00:00:00Z",
    "advisory" : "RHSA-2021:2106",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.1",
    "package" : "kernel-0:4.18.0-147.48.1.el8_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2021-04-20T00:00:00Z",
    "advisory" : "RHSA-2021:1279",
    "cpe" : "cpe:/a:redhat:rhel_eus:8.2::nfv",
    "package" : "kernel-rt-0:4.18.0-193.51.1.rt13.101.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2021-04-20T00:00:00Z",
    "advisory" : "RHSA-2021:1272",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.2",
    "package" : "kernel-0:4.18.0-193.51.1.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2021-04-20T00:00:00Z",
    "advisory" : "RHSA-2021:1295",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.2",
    "package" : "kpatch-patch"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-3347\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3347" ],
  "name" : "CVE-2021-3347",
  "csaw" : false
}