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CVE-2026-74509 Bluetooth: hci_sync: Fix advertising data UAFs

🗓️ 15 Aug 2026 12:27:31Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 40 Views

Linux kernel Bluetooth hci_sync has use-after-free in advertising data paths via unlocked adv_info pointer access.

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_sync.c"
    ],
    "versions": [
      {
        "version": "cba6b758711cab946c787f7c15be92cc749b8e1f",
        "lessThan": "565971488191bf54a87a417abafab6ad0de72201",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cba6b758711cab946c787f7c15be92cc749b8e1f",
        "lessThan": "c4cec575a6d6f7c36808a3a0017b0675968bb06b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cba6b758711cab946c787f7c15be92cc749b8e1f",
        "lessThan": "95cdcd8c82a501931fd3ae9b3811b0b6da167e94",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cba6b758711cab946c787f7c15be92cc749b8e1f",
        "lessThan": "eb1d8318764de7216e6dbba29a24d69f7ce51348",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cba6b758711cab946c787f7c15be92cc749b8e1f",
        "lessThan": "b16ebdbebd2d37f4cdc590bc3e9db71fe90350a3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cba6b758711cab946c787f7c15be92cc749b8e1f",
        "lessThan": "cdc36db204ffd97b947d64374cf23a210dc74777",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "42fe380baaaccbe635c34ca07b29d19b9ec2498d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.15.210",
        "lessThan": "5.16",
        "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_sync.c"
    ],
    "versions": [
      {
        "version": "5.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.17",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.184",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.154",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.103",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.44",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.8",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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27 Aug 2026 12:39Current
CVSS 3.18.8
EPSS0.00391
40