{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0d151a103775dd9645c78c97f77d6e2a5298d913"
            },
            {
              "fixed": "48c7ad6afcc58c2cda11fed39791708103b6a644"
            },
            {
              "fixed": "a0fd1086a57b982f8c24ae4ab165c2af39fe1735"
            },
            {
              "fixed": "672d52d9412252e61b8de8d773ccdf5a277cf540"
            },
            {
              "fixed": "5edcc018fa6e80b2c478454a4a8229c23d67c181"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "48542881997e17b49dc16b93fe910e0cfcf7a9f9"
            },
            {
              "last_affected": "9cfc84b1d464cc024286f42a090718f9067b80ed"
            },
            {
              "last_affected": "ddeda6ca5f218b668b560d90fc31ae469adbfd92"
            },
            {
              "last_affected": "d2ce562a5aff1dcd0c50d9808ea825ef90da909f"
            },
            {
              "last_affected": "96600c2e5ee8213dbab5df1617293d8e847bb4fa"
            },
            {
              "last_affected": "d6cbce18370641a21dd889e8613d8153df15eb39"
            },
            {
              "last_affected": "3f939bd73fed12dddc2a32a76116c19ca47c7678"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.19.319"
            },
            {
              "fixed": "4.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.281"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.10.223"
            },
            {
              "fixed": "5.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.164"
            },
            {
              "fixed": "5.16"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.1.101"
            },
            {
              "fixed": "6.2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.42"
            },
            {
              "fixed": "6.7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.9.11"
            },
            {
              "fixed": "6.10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.10.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74302.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_core: Fix UAF in hci_unregister_dev()\n\nhci_unregister_dev() does not disable cmd_timer and ncmd_timer\nbefore the hci_dev structure is freed. If a timeout fires\nduring device teardown, the callback dereferences freed memory\n(including the hdev-\u003ereset function pointer), leading to a\nuse-after-free.\n\nAdd disable_delayed_work_sync() calls alongside the existing\ndisable_work_sync() calls to ensure both timers are fully\nquiesced before teardown proceeds.",
  "id": "CVE-2026-74302",
  "modified": "2026-08-18T03:31:19.189089046Z",
  "published": "2026-08-15T05:58:04.638Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48c7ad6afcc58c2cda11fed39791708103b6a644"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5edcc018fa6e80b2c478454a4a8229c23d67c181"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/672d52d9412252e61b8de8d773ccdf5a277cf540"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0fd1086a57b982f8c24ae4ab165c2af39fe1735"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74302.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74302"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bluetooth: hci_core: Fix UAF in hci_unregister_dev()"
}