{"api_version":"1","generated_at":"2026-08-10T22:55:32+00:00","cve":"CVE-2026-68393","urls":{"html":"https://cve.report/CVE-2026-68393","api":"https://cve.report/api/cve/CVE-2026-68393.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68393","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68393"},"summary":{"title":"Bluetooth: hci_sync: extend conn_hash lookup critical sections","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:32","updated_at":"2026-08-10 13:20:32"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7","name":"https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538","name":"https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d","name":"https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68393","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68393","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6d0417e4e1cf66fd917f06f0454958362714ef7d 83b7e67698d0b93f685875ce82c8d335436834f7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6d0417e4e1cf66fd917f06f0454958362714ef7d 38326774df6198df0cc2744cc73bf77cb741c538 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6d0417e4e1cf66fd917f06f0454958362714ef7d d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb8b860e87b296bd1874c79a668081efd00f9754 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 94bf6380e936339a700c0b3171a49baf512aa70b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.28 6.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14.6 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"83b7e67698d0b93f685875ce82c8d335436834f7","status":"affected","version":"6d0417e4e1cf66fd917f06f0454958362714ef7d","versionType":"git"},{"lessThan":"38326774df6198df0cc2744cc73bf77cb741c538","status":"affected","version":"6d0417e4e1cf66fd917f06f0454958362714ef7d","versionType":"git"},{"lessThan":"d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d","status":"affected","version":"6d0417e4e1cf66fd917f06f0454958362714ef7d","versionType":"git"},{"status":"affected","version":"eb8b860e87b296bd1874c79a668081efd00f9754","versionType":"git"},{"status":"affected","version":"94bf6380e936339a700c0b3171a49baf512aa70b","versionType":"git"},{"lessThan":"6.13","status":"affected","version":"6.12.28","versionType":"semver"},{"lessThan":"6.15","status":"affected","version":"6.14.6","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","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-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc4","versionStartIncluding":"6.15","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","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-08-10T12:04:12.564Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68393","datePublished":"2026-08-10T12:04:12.564Z","dateReserved":"2026-07-30T09:28:09.388Z","dateUpdated":"2026-08-10T12:04:12.564Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:32","lastModifiedDate":"2026-08-10 13:20:32","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68393","Ordinal":"1","Title":"Bluetooth: hci_sync: extend conn_hash lookup critical sections","CVE":"CVE-2026-68393","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68393","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Bluetooth: hci_sync: extend conn_hash lookup critical sections"}]}}}