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CVE-2026-63944 Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync

🗓️ 19 Jul 2026 14:55:39Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 30 Views

Linux Bluetooth hci_sync fixes use-after-free in hci_le_create_cis_sync by saving conn_timeout before unlock.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-63944
19 Jul 202614:55
cve
EUVD
EUVD-2026-45717
19 Jul 202614:55
euvd
NVD
CVE-2026-63944
19 Jul 202616:17
nvd
OSV
CVE-2026-63944 Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync
19 Jul 202614:55
osv
OSV
DEBIAN-CVE-2026-63944
19 Jul 202616:17
osv
OSV
UBUNTU-CVE-2026-63944
20 Jul 202600:00
osv
Positive Technologies
PT-2026-61261
19 Jul 202600:00
ptsecurity
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-63944
20 Jul 202600:00
nessus
[
  {
    "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": "c09b80be6ffc338634b2f5f8cfa12b6843410834",
        "lessThan": "a55618c0f4cead9e59c63f5ee030d393fd70d861",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c09b80be6ffc338634b2f5f8cfa12b6843410834",
        "lessThan": "a921957d39290143629eb38c4f74b9bef8035d0a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c09b80be6ffc338634b2f5f8cfa12b6843410834",
        "lessThan": "d9019210c8c30d40eb20094274cc647e352f48f7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c09b80be6ffc338634b2f5f8cfa12b6843410834",
        "lessThan": "380e67b1794a9a281a0cb592b4e62077fbd0c8ca",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c09b80be6ffc338634b2f5f8cfa12b6843410834",
        "lessThan": "bfea6091e0fffb270c20e74384b660910277eb6c",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "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": "6.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.4",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.143",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.93",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.35",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.12",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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