{
  "threat_severity" : "Low",
  "public_date" : "2025-12-30T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: dm: fix a race condition in retrieve_deps",
    "id" : "2426236",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2426236"
  },
  "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-413",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\ndm: fix a race condition in retrieve_deps\nThere's a race condition in the multipath target when retrieve_deps\nraces with multipath_message calling dm_get_device and dm_put_device.\nretrieve_deps walks the list of open devices without holding any lock\nbut multipath may add or remove devices to the list while it is\nrunning. The end result may be memory corruption or use-after-free\nmemory access.\nSee this description of a UAF with multipath_message():\nhttps://listman.redhat.com/archives/dm-devel/2022-October/052373.html\nFix this bug by introducing a new rw semaphore \"devices_lock\". We grab\ndevices_lock for read in retrieve_deps and we grab it for write in\ndm_get_device and dm_put_device.", "A use-after-free flaw was found in the Linux kernel's device-mapper multipath implementation. A race condition exists between retrieve_deps() and multipath_message() when devices are added or removed. The retrieve_deps() function walks the device list without holding a lock while multipath_message() can modify the list, leading to use-after-free or memory corruption." ],
  "statement" : "This affects systems using device-mapper multipath. The race requires concurrent multipath configuration changes while querying device dependencies. The use-after-free could potentially lead to kernel crashes or memory corruption, though exploitation for privilege escalation would be difficult.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-05-22T00:00:00Z",
    "advisory" : "RHSA-2024:3138",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-04-30T00:00:00Z",
    "advisory" : "RHSA-2024:2394",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-427.13.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-04-30T00:00:00Z",
    "advisory" : "RHSA-2024:2394",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-427.13.1.el9_4"
  } ],
  "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" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "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-2023-54324\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54324\nhttps://lore.kernel.org/linux-cve-announce/2025123015-CVE-2023-54324-7149@gregkh/T" ],
  "name" : "CVE-2023-54324",
  "csaw" : false
}