{
  "threat_severity" : "Important",
  "public_date" : "2024-06-10T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: net: kernel: UAF in network route management",
    "id" : "2292331",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2292331"
  },
  "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"
  },
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nnet: fix __dst_negative_advice() race\n__dst_negative_advice() does not enforce proper RCU rules when\nsk->dst_cache must be cleared, leading to possible UAF.\nRCU rules are that we must first clear sk->sk_dst_cache,\nthen call dst_release(old_dst).\nNote that sk_dst_reset(sk) is implementing this protocol correctly,\nwhile __dst_negative_advice() uses the wrong order.\nGiven that ip6_negative_advice() has special logic\nagainst RTF_CACHE, this means each of the three ->negative_advice()\nexisting methods must perform the sk_dst_reset() themselves.\nNote the check against NULL dst is centralized in\n__dst_negative_advice(), there is no need to duplicate\nit in various callbacks.\nMany thanks to Clement Lecigne for tracking this issue.\nThis old bug became visible after the blamed commit, using UDP sockets.", "A use-after-free flaw was found in the Linux kernel's network route management. This flaw allows an attacker to alter the behavior of certain network connections." ],
  "statement" : "Environments which use third-party KABI modules may experience kernel crashes after applying errata for CVE-2024-36971. Contact your module vendor about an update. Until these third party modules can be fixed, you can prevent crashes by disabling them. This problem stems from modules which use the `negative_advice()` function.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7.7 Advanced Update Support",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5261",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.7",
    "package" : "kernel-0:3.10.0-1062.90.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5259",
    "cpe" : "cpe:/o:redhat:rhel_els:7",
    "package" : "kernel-0:3.10.0-1160.123.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-08-08T00:00:00Z",
    "advisory" : "RHSA-2024:5102",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-08-08T00:00:00Z",
    "advisory" : "RHSA-2024:5101",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.16.1.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-08-20T00:00:00Z",
    "advisory" : "RHSA-2024:5522",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Advanced Update Support",
    "release_date" : "2024-08-14T00:00:00Z",
    "advisory" : "RHSA-2024:5388",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.2",
    "package" : "kernel-0:4.18.0-193.138.1.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5266",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.4",
    "package" : "kernel-0:4.18.0-305.138.1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Telecommunications Update Service",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5282",
    "cpe" : "cpe:/a:redhat:rhel_tus:8.4::nfv",
    "package" : "kernel-rt-0:4.18.0-305.138.1.rt7.214.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Telecommunications Update Service",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5266",
    "cpe" : "cpe:/o:redhat:rhel_tus:8.4",
    "package" : "kernel-0:4.18.0-305.138.1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5266",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.4",
    "package" : "kernel-0:4.18.0-305.138.1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
    "release_date" : "2024-08-19T00:00:00Z",
    "advisory" : "RHSA-2024:5519",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.4",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5281",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.6",
    "package" : "kernel-0:4.18.0-372.118.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Telecommunications Update Service",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5281",
    "cpe" : "cpe:/o:redhat:rhel_tus:8.6",
    "package" : "kernel-0:4.18.0-372.118.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5281",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.6",
    "package" : "kernel-0:4.18.0-372.118.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
    "release_date" : "2024-08-19T00:00:00Z",
    "advisory" : "RHSA-2024:5582",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.6",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5255",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.8",
    "package" : "kernel-0:4.18.0-477.67.1.el8_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "release_date" : "2024-08-19T00:00:00Z",
    "advisory" : "RHSA-2024:5520",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.8",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-08-15T00:00:00Z",
    "advisory" : "RHSA-2024:5363",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-427.31.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-08-15T00:00:00Z",
    "advisory" : "RHSA-2024:5363",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-427.31.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-08-19T00:00:00Z",
    "advisory" : "RHSA-2024:5523",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5257",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.0",
    "package" : "kernel-0:5.14.0-70.112.1.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
    "release_date" : "2024-08-13T00:00:00Z",
    "advisory" : "RHSA-2024:5256",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.0::nfv",
    "package" : "kernel-rt-0:5.14.0-70.112.1.rt21.184.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
    "release_date" : "2024-08-26T00:00:00Z",
    "advisory" : "RHSA-2024:5858",
    "cpe" : "cpe:/o:redhat:rhel_e4s:9.0",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "release_date" : "2024-08-14T00:00:00Z",
    "advisory" : "RHSA-2024:5364",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.2",
    "package" : "kernel-0:5.14.0-284.79.1.el9_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "release_date" : "2024-08-14T00:00:00Z",
    "advisory" : "RHSA-2024:5365",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.2::nfv",
    "package" : "kernel-rt-0:5.14.0-284.79.1.rt14.364.el9_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "release_date" : "2024-08-19T00:00:00Z",
    "advisory" : "RHSA-2024:5521",
    "cpe" : "cpe:/o:redhat:rhel_eus:9.2",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.12",
    "release_date" : "2024-08-19T00:00:00Z",
    "advisory" : "RHSA-2024:5200",
    "cpe" : "cpe:/a:redhat:openshift:4.12::el8",
    "package" : "rhcos-412.86.202408091913-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.13",
    "release_date" : "2024-08-22T00:00:00Z",
    "advisory" : "RHSA-2024:5444",
    "cpe" : "cpe:/a:redhat:openshift:4.13::el9",
    "package" : "rhcos-413.92.202408122222-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.14",
    "release_date" : "2024-08-22T00:00:00Z",
    "advisory" : "RHSA-2024:5433",
    "cpe" : "cpe:/a:redhat:openshift:4.14::el9",
    "package" : "rhcos-414.92.202408100542-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.15",
    "release_date" : "2024-08-22T00:00:00Z",
    "advisory" : "RHSA-2024:5439",
    "cpe" : "cpe:/a:redhat:openshift:4.15::el9",
    "package" : "rhcos-415.92.202408100433-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.16",
    "release_date" : "2024-08-20T00:00:00Z",
    "advisory" : "RHSA-2024:5422",
    "cpe" : "cpe:/a:redhat:openshift:4.16::el9",
    "package" : "rhcos-416.94.202408132101-0"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2024-36971\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-36971\nhttps://lore.kernel.org/linux-cve-announce/20240610090330.1347021-2-lee@kernel.org/T\nhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog" ],
  "csaw" : true,
  "name" : "CVE-2024-36971",
  "mitigation" : {
    "value" : "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.",
    "lang" : "en:us"
  }
}