{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68393", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.388Z", "datePublished": "2026-08-10T12:04:12.564Z", "dateUpdated": "2026-08-10T12:04:12.564Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-10T12:04:12.564Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: extend conn_hash lookup critical sections\n\nUsing RCU-protected pointers outside the critical sections without\nrefcount is incorrect and may result to UAF.\n\nExtend critical section to cover both hci_conn_hash lookup and use of\nthe returned conn.\n\nAdd surrounding rcu_read_lock() also when return value is not used, in\npreparation for RCU lockdep requirement to hci_lookup_le_connect().\n\nThis avoids concurrent deletion of the conn before we are done\ndereferencing it.\n\nAlso, make sure to hold hdev->lock when accessing hdev->accept_list."}], "affected": [{"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": "6d0417e4e1cf66fd917f06f0454958362714ef7d", "lessThan": "83b7e67698d0b93f685875ce82c8d335436834f7", "status": "affected", "versionType": "git"}, {"version": "6d0417e4e1cf66fd917f06f0454958362714ef7d", "lessThan": "38326774df6198df0cc2744cc73bf77cb741c538", "status": "affected", "versionType": "git"}, {"version": "6d0417e4e1cf66fd917f06f0454958362714ef7d", "lessThan": "d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d", "status": "affected", "versionType": "git"}, {"version": "eb8b860e87b296bd1874c79a668081efd00f9754", "status": "affected", "versionType": "git"}, {"version": "94bf6380e936339a700c0b3171a49baf512aa70b", "status": "affected", "versionType": "git"}, {"version": "6.12.28", "lessThan": "6.13", "status": "affected", "versionType": "semver"}, {"version": "6.14.6", "lessThan": "6.15", "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": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "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-rc4", "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": "6.15", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.2-rc4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.28"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7"}, {"url": "https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538"}, {"url": "https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d"}], "title": "Bluetooth: hci_sync: extend conn_hash lookup critical sections", "x_generator": {"engine": "bippy-1.2.0"}}}}

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