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CVE-2026-74302 Bluetooth: hci_core: Fix UAF in hci_unregister_dev()

🗓️ 15 Aug 2026 05:58:04Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

Linux kernel Bluetooth HCI UAF in hci_unregister_dev() from unsynchronized cmd_timer and ncmd_timer freeing freed hdev structure.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bluetooth/hci_core.c"
    ],
    "versions": [
      {
        "version": "0d151a103775dd9645c78c97f77d6e2a5298d913",
        "lessThan": "48c7ad6afcc58c2cda11fed39791708103b6a644",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0d151a103775dd9645c78c97f77d6e2a5298d913",
        "lessThan": "a0fd1086a57b982f8c24ae4ab165c2af39fe1735",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0d151a103775dd9645c78c97f77d6e2a5298d913",
        "lessThan": "672d52d9412252e61b8de8d773ccdf5a277cf540",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0d151a103775dd9645c78c97f77d6e2a5298d913",
        "lessThan": "5edcc018fa6e80b2c478454a4a8229c23d67c181",
        "status": "affected",
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      },
      {
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      },
      {
        "version": "9cfc84b1d464cc024286f42a090718f9067b80ed",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ddeda6ca5f218b668b560d90fc31ae469adbfd92",
        "status": "affected",
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      },
      {
        "version": "d2ce562a5aff1dcd0c50d9808ea825ef90da909f",
        "status": "affected",
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      },
      {
        "version": "96600c2e5ee8213dbab5df1617293d8e847bb4fa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d6cbce18370641a21dd889e8613d8153df15eb39",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3f939bd73fed12dddc2a32a76116c19ca47c7678",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4.19.319",
        "lessThan": "4.20",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.4.281",
        "lessThan": "5.5",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.10.223",
        "lessThan": "5.11",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.15.164",
        "lessThan": "5.16",
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      },
      {
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      {
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      },
      {
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        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bluetooth/hci_core.c"
    ],
    "versions": [
      {
        "version": "6.10",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.10",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.40",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.5",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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17 Aug 2026 05:45Current
CVSS 3.17.8
EPSS0.0017
36