{
  "threat_severity" : "Moderate",
  "public_date" : "2025-12-30T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Revert \"Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work\"",
    "id" : "2426140",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2426140"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.7",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-476",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nRevert \"Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work\"\nThis reverts commit 1e9ac114c4428fdb7ff4635b45d4f46017e8916f.\nThis patch introduces a possible null-ptr-def problem. Revert it. And the\nfixed bug by this patch have resolved by commit 73f7b171b7c0 (\"Bluetooth:\nbtsdio: fix use after free bug in btsdio_remove due to race condition\").", "A regression was found in the Linux kernel's Bluetooth btsdio driver. A previous commit (1e9ac114c442) intended to fix a use-after-free bug introduced a potential NULL pointer dereference problem. This commit reverts that change since the original issue was properly fixed by a separate commit (73f7b171b7c0) that addressed the race condition correctly." ],
  "statement" : "This is a revert of a problematic fix that introduced a NULL pointer dereference. The underlying use-after-free issue was already resolved by a different, correct fix. Systems with Bluetooth SDIO devices could potentially experience a kernel crash from the NULL pointer dereference until this revert is applied.",
  "affected_release" : [ {
    "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" : "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-2023-54197\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54197\nhttps://lore.kernel.org/linux-cve-announce/2025123029-CVE-2023-54197-aeec@gregkh/T" ],
  "name" : "CVE-2023-54197",
  "mitigation" : {
    "value" : "To mitigate this issue, prevent the btsdio module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.",
    "lang" : "en:us"
  },
  "csaw" : false
}