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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
6d0417e4e1cf66fd917f06f0454958362714ef7d affected < 83b7e67698d0b93f685875ce82c8d335436834f7
6d0417e4e1cf66fd917f06f0454958362714ef7d affected < 38326774df6198df0cc2744cc73bf77cb741c538
6d0417e4e1cf66fd917f06f0454958362714ef7d affected < d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d
eb8b860e87b296bd1874c79a668081efd00f9754 affected —
94bf6380e936339a700c0b3171a49baf512aa70b affected —
6.12.28 affected < 6.13
6.14.6 affected < 6.15
Linux Linux affected
Version Status Constraints
6.15 affected —
0 unaffected < 6.15
6.18.42 unaffected ≤ 6.18.*
7.1.6 unaffected ≤ 7.1.*
7.2-rc4 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538 cve-icon
https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7 cve-icon
https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d cve-icon
History

Mon, 10 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Bluetooth: hci_sync: extend conn_hash lookup critical sections
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-10T12:04:12.564Z

Reserved: 2026-07-30T09:28:09.388Z

Link: CVE-2026-68393

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-08-10T16:15:04Z

Weaknesses