CVE-2026-43019

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/66d432e9b45bae7881ffcdb12cd8fd0bf254ef02	Patch
https://git.kernel.org/stable/c/7502c1cf303b69f71d085f5ff7251b0e1b0f09df
https://git.kernel.org/stable/c/7d568fede8eac91161a60b710aa920abe9b0fb9f	Patch
https://git.kernel.org/stable/c/a2639a7f0f5bf7d73f337f8f077c19415c62ed2c	Patch
https://git.kernel.org/stable/c/bad65b4b0a96139f023eadc28a33125963208449	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.4.16:::::::*
	cpe:2.3:o:linux:linux_kernel:6.5.3:::::::*
	cpe:2.3:o:linux:linux_kernel:7.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc4::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc5::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc6::::::

History

No history.

Information

Published : 2026-05-01 15:16

Updated : 2026-06-19 13:16

NVD link : CVE-2026-43019

Mitre link : CVE-2026-43019

CVE.ORG link : CVE-2026-43019

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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