CVE-2026-64178
Published Jul 19, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: Fix UAF read of dev->name bnep_add_connection() needs to keep holding the bnep_session_sem while reading dev->name (just like bnep_get_connlist() does); otherwise the bnep_session() thread can concurrently free the net_device, which can for example be triggered by a concurrent bnep_del_connection(). (This UAF is fairly uninteresting from a security perspective; calling bnep_add_connection() requires passing a capable(CAP_NET_ADMIN) check. It also requires completely tearing down a netdev during a fairly tight race window.)
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References
Other References
https://git.kernel.org/stable/c/4907596f25b1720fa948371ac5f6c1f8da10a5bc
https://git.kernel.org/stable/c/5506aec795135cdd4cbf4e845929155663b25055
https://git.kernel.org/stable/c/59e932ded949fa6f0340bf7c6d7818f962fa4fd2
https://git.kernel.org/stable/c/915a92182e2cda9cd7d2479020a44c6eda986f7c
https://git.kernel.org/stable/c/a75bbcb10cb21acc169b785e9804f57d97873a9c
https://git.kernel.org/stable/c/b21805258d7e926adfd455fc820a447b90da3b82
https://git.kernel.org/stable/c/e7578529b97e5d4e439cf8f3e637c2303015338f
https://git.kernel.org/stable/c/fe69f634b076ae3ca81c5a5b845d9bba527036f7
Frequently Asked Questions
What is CVE-2026-64178? +
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: bnep: Fix UAF read of dev->name
bnep_add_connection() needs to keep holding the bnep_session_sem while
reading dev->name (just like bnep_get_connlist() does); otherwise the
bnep_session() thread can concurrently free the net_device, which can for
example be triggered by a concurrent bnep_del_connection().
(This UAF is fairly uninteresting from a security perspective;
calling bnep_add_connection() requires passing a capable(CAP_NET_ADMIN)
check. It also requires completely tearing down a netdev during a fairly
tight race window.)
How do I check if I'm vulnerable to CVE-2026-64178? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.