{
  "threat_severity" : "Low",
  "public_date" : "2025-12-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: iommufd: Do not add the same hwpt to the ioas->hwpt_list twice",
    "id" : "2425077",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2425077"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-694",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\niommufd: Do not add the same hwpt to the ioas->hwpt_list twice\nThe hwpt is added to the hwpt_list only during its creation, it is never\nadded again. This hunk is some missed leftover from rework. Adding it\ntwice will corrupt the linked list in some cases.\nIt effects HWPT specific attachment, which is something the test suite\ncannot cover until we can create a legitimate struct device with a\nnon-system iommu \"driver\" (ie we need the bus removed from the iommu code)", "A linked list corruption flaw was found in the Linux kernel's iommufd subsystem. During HWPT (Hardware Page Table) specific attachment, the same hwpt can be added to the ioas->hwpt_list twice due to leftover code from a previous rework. This duplicate insertion corrupts the linked list structure, potentially causing crashes or undefined behavior." ],
  "statement" : "This flaw affects systems using iommufd for IOMMU management, typically in virtualization environments with device passthrough. The list corruption occurs during specific HWPT attachment scenarios and requires the ability to interact with the iommufd interface, which typically needs elevated privileges.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  } ],
  "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 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 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" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-54043\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54043\nhttps://lore.kernel.org/linux-cve-announce/2025122422-CVE-2023-54043-16c8@gregkh/T" ],
  "name" : "CVE-2023-54043",
  "csaw" : false
}