{
  "threat_severity" : "Important",
  "public_date" : "2026-05-15T03:06:30Z",
  "bugzilla" : {
    "description" : "kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation",
    "id" : "2477784",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2477784"
  },
  "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-1220",
  "details" : [ "Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker to corrupt instructions executed at a different privilege level, potentially resulting in privilege escalation.", "A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result in privilege escalation, granting an attacker higher system access than intended." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-08-06T00:00:00Z",
    "advisory" : "RHSA-2026:50979",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-553.153.1.rt7.494.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-08-06T00:00:00Z",
    "advisory" : "RHSA-2026:50978",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.153.1.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "release_date" : "2026-08-24T00:00:00Z",
    "advisory" : "RHSA-2026:59091",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.4",
    "package" : "kernel-0:4.18.0-305.201.1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
    "release_date" : "2026-08-24T00:00:00Z",
    "advisory" : "RHSA-2026:59091",
    "cpe" : "cpe:/o:redhat:rhel_eus_long_life:8.4",
    "package" : "kernel-0:4.18.0-305.201.1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
    "release_date" : "2026-08-12T00:00:00Z",
    "advisory" : "RHSA-2026:53989",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.6",
    "package" : "kernel-0:4.18.0-372.206.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
    "release_date" : "2026-08-12T00:00:00Z",
    "advisory" : "RHSA-2026:53989",
    "cpe" : "cpe:/o:redhat:rhel_eus_long_life:8.6",
    "package" : "kernel-0:4.18.0-372.206.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
    "release_date" : "2026-08-17T00:00:00Z",
    "advisory" : "RHSA-2026:55444",
    "cpe" : "cpe:/o:redhat:rhel_tus:8.8",
    "package" : "kernel-0:4.18.0-477.159.1.el8_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
    "release_date" : "2026-08-17T00:00:00Z",
    "advisory" : "RHSA-2026:55444",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.8",
    "package" : "kernel-0:4.18.0-477.159.1.el8_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-08-11T00:00:00Z",
    "advisory" : "RHSA-2026:53329",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-687.38.1.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-08-11T00:00:00Z",
    "advisory" : "RHSA-2026:53329",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-687.38.1.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
    "release_date" : "2026-08-19T00:00:00Z",
    "advisory" : "RHSA-2026:56573",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.4",
    "package" : "kernel-0:5.14.0-427.145.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.6 Extended Update Support",
    "release_date" : "2026-08-12T00:00:00Z",
    "advisory" : "RHSA-2026:53990",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.6",
    "package" : "kernel-0:5.14.0-570.134.1.el9_6"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.12",
    "release_date" : "2026-09-03T00:00:00Z",
    "advisory" : "RHSA-2026:59831",
    "cpe" : "cpe:/a:redhat:openshift:4.12::el8",
    "package" : "rhcos-412.86.202608241157-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.17",
    "release_date" : "2026-09-03T00:00:00Z",
    "advisory" : "RHSA-2026:60019",
    "cpe" : "cpe:/a:redhat:openshift:4.17::el9",
    "package" : "rhcos-417.94.202608250221-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.19",
    "release_date" : "2026-08-26T00:00:00Z",
    "advisory" : "RHSA-2026:57402",
    "cpe" : "cpe:/a:redhat:openshift:4.19::el9",
    "package" : "rhcos-4.19.9.6.202608182320-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.20",
    "release_date" : "2026-08-25T00:00:00Z",
    "advisory" : "RHSA-2026:57543",
    "cpe" : "cpe:/a:redhat:openshift:4.20::el9",
    "package" : "rhcos-4.20.9.6.202608181658-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.21",
    "release_date" : "2026-08-25T00:00:00Z",
    "advisory" : "RHSA-2026:57457",
    "cpe" : "cpe:/a:redhat:openshift:4.21::el9",
    "package" : "rhcos-4.21.9.6.202608180431-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.22",
    "release_date" : "2026-08-18T00:00:00Z",
    "advisory" : "RHSA-2026:54769",
    "cpe" : "cpe:/a:redhat:openshift:4.22::el9",
    "package" : "rhcos-4.22.9.8.202608130832-0"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "libkrun",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "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" : "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 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux for NVIDIA 26",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/a:redhat:enterprise_linux_nvidia:"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift/ose-rhel-coreos-8",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift/ose-rhel-coreos-9",
    "cpe" : "cpe:/a:redhat:openshift:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-54518\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-54518\nhttp://www.openwall.com/lists/oss-security/2026/05/12/15\nhttp://xenbits.xen.org/xsa/advisory-490.html\nhttps://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html" ],
  "name" : "CVE-2025-54518",
  "csaw" : false
}