{
  "threat_severity" : "Moderate",
  "public_date" : "2026-05-06T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: eventpoll: defer struct eventpoll free to RCU grace period",
    "id" : "2467019",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2467019"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-825",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\neventpoll: defer struct eventpoll free to RCU grace period\nIn certain situations, ep_free() in eventpoll.c will kfree the epi->ep\neventpoll struct while it still being used by another concurrent thread.\nDefer the kfree() to an RCU callback to prevent UAF.", "A flaw was found in the Linux kernel's `eventpoll` component. In certain situations, the `ep_free()` function in `eventpoll.c` can prematurely free the `eventpoll` data structure while it is still being used by another concurrent thread. This use-after-free (UAF) vulnerability could allow a local attacker to cause a denial of service or potentially escalate privileges." ],
  "affected_release" : [ {
    "product_name" : "NVIDIA for RHEL 10",
    "release_date" : "2026-07-07T00:00:00Z",
    "advisory" : "RHSA-2026:36186",
    "cpe" : "cpe:/a:redhat:enterprise_linux_nvidia:10::el10",
    "package" : "kernel-0:6.12.0-231.15.el10nv"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-07-08T00:00:00Z",
    "advisory" : "RHSA-2026:36541",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "kernel-0:6.12.0-211.31.1.el10_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10.0 Extended Update Support",
    "release_date" : "2026-07-14T00:00:00Z",
    "advisory" : "RHSA-2026:39371",
    "cpe" : "cpe:/o:redhat:enterprise_linux_eus:10.0",
    "package" : "kernel-0:6.12.0-55.88.1.el10_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-07-08T00:00:00Z",
    "advisory" : "RHSA-2026:36645",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-687.23.1.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-07-08T00:00:00Z",
    "advisory" : "RHSA-2026:36645",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-687.23.1.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
    "release_date" : "2026-07-10T00:00:00Z",
    "advisory" : "RHSA-2026:37729",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.4",
    "package" : "kernel-0:5.14.0-427.137.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.6 Extended Update Support",
    "release_date" : "2026-07-13T00:00:00Z",
    "advisory" : "RHSA-2026:38902",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.6",
    "package" : "kernel-0:5.14.0-570.127.1.el9_6"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Under investigation",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-43074\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43074\nhttps://lore.kernel.org/linux-cve-announce/2026050601-CVE-2026-43074-ac01@gregkh/T" ],
  "csaw" : true,
  "name" : "CVE-2026-43074"
}