{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68391", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.388Z", "datePublished": "2026-08-10T12:04:10.564Z", "dateUpdated": "2026-08-17T05:04:39.043Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:04:39.043Z"}, "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."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Both sides of the race are local: the vulnerable path is entered only by writing MGMT_OP_GET_CONN_INFO/MGMT_OP_GET_CLOCK_INFO to an AF_BLUETOOTH/BTPROTO_HCI socket bound to HCI_CHANNEL_CONTROL, and the free is driven by a local disconnect/device-teardown. A remote or adjacent Bluetooth peer cannot inject mgmt commands, so the vector is local even though the subsystem is Bluetooth.\nAC:L - The attacker owns both sides of the race: one thread loops GET_CONN_INFO/GET_CLOCK_INFO, whose sync callback blocks in __hci_cmd_sync waiting on the controller for up to HCI_CMD_TIMEOUT, while another issues MGMT_OP_DISCONNECT or HCIDEVDOWN to free the hci_conn inside that wide window; with an emulated controller the response timing is fully controlled, and the sequence can be retried indefinitely.\nPR:L - The opcodes lack HCI_MGMT_UNTRUSTED so they need a trusted mgmt socket (CAP_NET_ADMIN), which kernel CNA practice for the Bluetooth mgmt interface treats as low privilege: it is a delegable capability held by the non-root bluetoothd service account and Android's sandboxed Bluetooth process rather than full init-namespace root.\nUI:N - The attacker performs every step itself \u2014 queueing the mgmt command and tearing down the connection or the HCI index \u2014 with no victim action, pairing, or user-initiated Bluetooth operation required.\nS:U - The use-after-free and the resulting heap corruption stay entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - get_conn_info_complete()/get_clock_info_complete() read rssi, tx_power, max_tx_power, clock and clock_accuracy from a freed hci_conn and return them to userspace over the mgmt socket; hci_conn comes from a general-purpose kmalloc cache, so grooming the reclaimed slab turns this into a repeatable kernel-memory disclosure oracle.\nI:H - The dangling cmd->user_data points at a freed, sprayable struct-device-embedded object that can be reclaimed with attacker-shaped data and is later put/released, and the unlocked lookup also propagates a stale conn->handle into hci_read_rssi_sync/hci_read_clock_sync so the host acts on a handle that may have been reused by another link \u2014 sufficient for controlled corruption after heap grooming.\nA:H - Dereferencing the freed hci_conn in the hci_cmd_sync completion callback is a slab use-after-free that produces a KASAN splat and can oops or panic the kernel when the slab has been returned to the page allocator, and it can be re-triggered in a loop for sustained denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/mgmt.c"], "versions": [{"version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "lessThan": "b56f2ecafc08f372bf0529f9c4f3f429cb1702dc", "status": "affected", "versionType": "git"}, {"version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "lessThan": "f915e74b6f18293d1d69a2a3305ef321ff7c0172", "status": "affected", "versionType": "git"}, {"version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "lessThan": "d5b3b484b62bb0f4542e7622789d28871626cdf0", "status": "affected", "versionType": "git"}, {"version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "lessThan": "ecdcb55ea1c01dda074406f38058785a69526734", "status": "affected", "versionType": "git"}, {"version": "7b445e220db9a2c58be5d09bbbd322abf1b1452a", "lessThan": "da55f570191d5d72f10c607a7043b947eb05ea46", "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/mgmt.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc"}, {"url": "https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172"}, {"url": "https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0"}, {"url": "https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734"}, {"url": "https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46"}], "title": "Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"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": "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": "6.6.*", "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": "2026-08-17T06:17:47.743", "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/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"}

{"bugzilla": {"description": "kernel: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds", "id": "2513453", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513453"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds\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.\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.\nWhen accessing conn->state, ensure hdev->lock is held to avoid data\nrace.", "A flaw was found in the Linux kernel's Bluetooth management component. This vulnerability involves a Use-After-Free (UAF) condition, a type of memory corruption where the system attempts to use memory after it has been freed. This can occur due to improper handling of `hci_conn` pointers, potentially leading to arbitrary code execution or a denial of service."], "name": "CVE-2026-68391", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68391\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68391\nhttps://lore.kernel.org/linux-cve-announce/2026081046-CVE-2026-68391-b055@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7b445e220db9a2c58be5d09bbbd322abf1b1452a,b56f2ecafc08f372bf0529f9c4f3f429cb1702dc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7b445e220db9a2c58be5d09bbbd322abf1b1452a,f915e74b6f18293d1d69a2a3305ef321ff7c0172)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7b445e220db9a2c58be5d09bbbd322abf1b1452a,d5b3b484b62bb0f4542e7622789d28871626cdf0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7b445e220db9a2c58be5d09bbbd322abf1b1452a,ecdcb55ea1c01dda074406f38058785a69526734)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7b445e220db9a2c58be5d09bbbd322abf1b1452a,da55f570191d5d72f10c607a7043b947eb05ea46)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T16:15:04.434927+00:00", "updated": "2026-08-14T01:45:08.189503+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}