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CVE-2026-43019

Bluetooth: hci_conn: fix potential UAF in set_cig_params_sync PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fix potential UAF in set_cig_params_sync hci_conn lookup and field access must be covered by hdev lock in set_cig_params_sync, otherwise it's possible it is freed concurrently. Take hdev lock to prevent hci_conn from being deleted or modified concurrently. Just RCU lock is not suitable here, as we also want to avoid "tearing" in the configuration.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected a091289218202bc09d9b9caa8afcde1018584aec before 7502c1cf303b69f71d085f5ff7251b0e1b0f09df; affected a091289218202bc09d9b9caa8afcde1018584aec before 66d432e9b45bae7881ffcdb12cd8fd0bf254ef02; affected a091289218202bc09d9b9caa8afcde1018584aec before 7d568fede8eac91161a60b710aa920abe9b0fb9f; affected a091289218202bc09d9b9caa8afcde1018584aec before bad65b4b0a96139f023eadc28a33125963208449; affected a091289218202bc09d9b9caa8afcde1018584aec before a2639a7f0f5bf7d73f337f8f077c19415c62ed2c; affected 3a273cd0f47dd672d37736e623849374f9ab9ce9; affected d8570c4c3f2a3e51b3c8b5e6ec898364c5c03062; affected 6.4.16 before 6.5; affected 6.5.3 before 6.6
Linux / Linuxaffected 6.6; unaffected 0 before 6.6; unaffected 6.6.143 through 6.6.*; unaffected 6.12.81 through 6.12.*; unaffected 6.18.22 through 6.18.*; unaffected 6.19.12 through 6.19.*; unaffected 7.0 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.