Bluetooth: hci_sync: extend conn_hash lookup critical sections

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68393
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:32 UTC
Updated2026-08-10 13:20:32 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 6d0417e4e1cf66fd917f06f0454958362714ef7d 83b7e67698d0b93f685875ce82c8d335436834f7 git Not specified
CNA Linux Linux affected 6d0417e4e1cf66fd917f06f0454958362714ef7d 38326774df6198df0cc2744cc73bf77cb741c538 git Not specified
CNA Linux Linux affected 6d0417e4e1cf66fd917f06f0454958362714ef7d d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d git Not specified
CNA Linux Linux affected eb8b860e87b296bd1874c79a668081efd00f9754 git Not specified
CNA Linux Linux affected 94bf6380e936339a700c0b3171a49baf512aa70b git Not specified
CNA Linux Linux affected 6.12.28 6.13 semver Not specified
CNA Linux Linux affected 6.14.6 6.15 semver Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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