In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also needs to hold refcount to avoid UAF. Take appropriate locks for hci_conn lookups, and take refcount for hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays valid. When accessing conn->state, ensure hdev->lock is held to avoid data race.

zetlyn/cve-nvd vulnerability cve CVE-2026-68391 known 2026-08-10

https://nvd.nist.gov/vuln/detail/CVE-2026-68391

Properties

cvss	7.8 receipt Source NVD Its words `7.8` Read by `field:cve.metrics.cvssMetricV31[].cvssData.baseScore` Said since 2026-10-03 12:09 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "84674dd1d3192ecb050827d3148642609c0c9dbb", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "b56f2ecafc08f372bf0529f9c4f3f429cb1702dc", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "f915e74b6f18293d1d69a2a3305ef321ff7c0172", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "d5b3b484b62bb0f4542e7622789d28871626cdf0", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "ecdcb55ea1c01dda074406f38058785a69526734", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "da55f570191d5d72f10c607a7043b947eb05ea46", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.0" }, { "lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.1.", "status": "unaffected", "version": "6.1.189", "versionType": "semver" }, { "lessThanOrEqual": "6.6.", "status": "unaffected", "version": "6.6.148", "versionType": "semver" }, { "lessThanOrEqual": "6.12.", "status": "unaffected", "version": "6.12.101", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.42", "versionType": "semver" }, { "lessThanOrEqual": "7.1.", "status": "unaffected", "version": "7.1.6", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds\n\nDereferencing RCU-protected pointers outside critical sections is\ninvalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also\nneeds to hold refcount to avoid UAF.\n\nTake appropriate locks for hci_conn lookups, and take refcount for\nhci_conn pointers stored in mgmt_pending_cmd so that the pointer stays\nvalid.\n\nWhen accessing conn->state, ensure hdev->lock is held to avoid data\nrace." } ], "id": "CVE-2026-68391", "lastModified": "2026-10-03T11:17:36.830", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary" } ] }, "published": "2026-08-10T13:20:32.433", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84674dd1d3192ecb050827d3148642609c0c9dbb" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received" } }
product	Linux receipt Source NVD Its words `Linux` Read by `field:cve.affected[].affectedData[].product` Said since 2026-10-03 12:09 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "84674dd1d3192ecb050827d3148642609c0c9dbb", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "b56f2ecafc08f372bf0529f9c4f3f429cb1702dc", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "f915e74b6f18293d1d69a2a3305ef321ff7c0172", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "d5b3b484b62bb0f4542e7622789d28871626cdf0", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "ecdcb55ea1c01dda074406f38058785a69526734", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "da55f570191d5d72f10c607a7043b947eb05ea46", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.0" }, { "lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.1.", "status": "unaffected", "version": "6.1.189", "versionType": "semver" }, { "lessThanOrEqual": "6.6.", "status": "unaffected", "version": "6.6.148", "versionType": "semver" }, { "lessThanOrEqual": "6.12.", "status": "unaffected", "version": "6.12.101", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.42", "versionType": "semver" }, { "lessThanOrEqual": "7.1.", "status": "unaffected", "version": "7.1.6", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds\n\nDereferencing RCU-protected pointers outside critical sections is\ninvalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also\nneeds to hold refcount to avoid UAF.\n\nTake appropriate locks for hci_conn lookups, and take refcount for\nhci_conn pointers stored in mgmt_pending_cmd so that the pointer stays\nvalid.\n\nWhen accessing conn->state, ensure hdev->lock is held to avoid data\nrace." } ], "id": "CVE-2026-68391", "lastModified": "2026-10-03T11:17:36.830", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary" } ] }, "published": "2026-08-10T13:20:32.433", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84674dd1d3192ecb050827d3148642609c0c9dbb" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received" } }
status	Received receipt Source NVD Its words `Received` Read by `field:cve.vulnStatus` Said since 2026-10-03 12:09 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "84674dd1d3192ecb050827d3148642609c0c9dbb", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "b56f2ecafc08f372bf0529f9c4f3f429cb1702dc", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "f915e74b6f18293d1d69a2a3305ef321ff7c0172", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "d5b3b484b62bb0f4542e7622789d28871626cdf0", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "ecdcb55ea1c01dda074406f38058785a69526734", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "da55f570191d5d72f10c607a7043b947eb05ea46", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.0" }, { "lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.1.", "status": "unaffected", "version": "6.1.189", "versionType": "semver" }, { "lessThanOrEqual": "6.6.", "status": "unaffected", "version": "6.6.148", "versionType": "semver" }, { "lessThanOrEqual": "6.12.", "status": "unaffected", "version": "6.12.101", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.42", "versionType": "semver" }, { "lessThanOrEqual": "7.1.", "status": "unaffected", "version": "7.1.6", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds\n\nDereferencing RCU-protected pointers outside critical sections is\ninvalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also\nneeds to hold refcount to avoid UAF.\n\nTake appropriate locks for hci_conn lookups, and take refcount for\nhci_conn pointers stored in mgmt_pending_cmd so that the pointer stays\nvalid.\n\nWhen accessing conn->state, ensure hdev->lock is held to avoid data\nrace." } ], "id": "CVE-2026-68391", "lastModified": "2026-10-03T11:17:36.830", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary" } ] }, "published": "2026-08-10T13:20:32.433", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84674dd1d3192ecb050827d3148642609c0c9dbb" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received" } }
vendor	Linux receipt Source NVD Its words `Linux` Read by `field:cve.affected[].affectedData[].vendor` Said since 2026-10-03 12:09 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "84674dd1d3192ecb050827d3148642609c0c9dbb", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "b56f2ecafc08f372bf0529f9c4f3f429cb1702dc", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "f915e74b6f18293d1d69a2a3305ef321ff7c0172", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "d5b3b484b62bb0f4542e7622789d28871626cdf0", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "ecdcb55ea1c01dda074406f38058785a69526734", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" }, { "lessThan": "da55f570191d5d72f10c607a7043b947eb05ea46", "status": "affected", "version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "net/bluetooth/mgmt.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.0" }, { "lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.1.", "status": "unaffected", "version": "6.1.189", "versionType": "semver" }, { "lessThanOrEqual": "6.6.", "status": "unaffected", "version": "6.6.148", "versionType": "semver" }, { "lessThanOrEqual": "6.12.", "status": "unaffected", "version": "6.12.101", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.42", "versionType": "semver" }, { "lessThanOrEqual": "7.1.", "status": "unaffected", "version": "7.1.6", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds\n\nDereferencing RCU-protected pointers outside critical sections is\ninvalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also\nneeds to hold refcount to avoid UAF.\n\nTake appropriate locks for hci_conn lookups, and take refcount for\nhci_conn pointers stored in mgmt_pending_cmd so that the pointer stays\nvalid.\n\nWhen accessing conn->state, ensure hdev->lock is held to avoid data\nrace." } ], "id": "CVE-2026-68391", "lastModified": "2026-10-03T11:17:36.830", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary" } ] }, "published": "2026-08-10T13:20:32.433", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84674dd1d3192ecb050827d3148642609c0c9dbb" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received" } }

Text

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also needs to hold refcount to avoid UAF. Take appropriate locks for hci_conn lookups, and take refcount for hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays valid. When accessing conn->state, ensure hdev->lock is held to avoid data race.