CVE-2026-68393High· 8.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: extend conn_hash lookup critical sections Using RCU-protected pointers outside the critical sections without refcount is incorrect and may result …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
Last analysed / modified upstream
0.2% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: extend conn_hash lookup critical sections
Using RCU-protected pointers outside the critical sections without refcount is incorrect and may result to UAF.
Extend critical section to cover both hci_conn_hash lookup and use of the returned conn.
Add surrounding rcu_read_lock() also when return value is not used, in preparation for RCU lockdep requirement to hci_lookup_le_connect().
This avoids concurrent deletion of the conn before we are done dereferencing it.
Also, make sure to hold hdev->lock when accessing hdev->accept_list.
Linux >= eb8b860e87b296bd1874c79a668081efd00f9754 < 3f98e7f38e1bb761a9964a8851f9c08e9c23b3ddLinux >= 6d0417e4e1cf66fd917f06f0454958362714ef7d < 83b7e67698d0b93f685875ce82c8d335436834f7Linux >= 6d0417e4e1cf66fd917f06f0454958362714ef7d < 38326774df6198df0cc2744cc73bf77cb741c538Linux >= 6d0417e4e1cf66fd917f06f0454958362714ef7d < d5efd6e4b8b0634af6843178fe1a7dd2b2178a3dLinux 94bf6380e936339a700c0b3171a49baf512aa70bLinux >= 6.12.28 < 6.12.114Linux >= 6.14.6 < 6.15Linux 6.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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