CVE-2026-64178: Bluetooth: bnep: Fix UAF read of dev->name
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: bnep: Fix UAF read of dev->name
bnepaddconnection() needs to keep holding the bnepsessionsem while reading dev->name (just like bnepgetconnlist() does); otherwise the bnepsession() thread can concurrently free the netdevice, which can for example be triggered by a concurrent bnepdelconnection().
(This UAF is fairly uninteresting from a security perspective; calling bnepaddconnection() requires passing a capable(CAPNETADMIN) check. It also requires completely tearing down a netdev during a fairly tight race window.)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64178?
CVE-2026-64178 has a risk rating of 12, indicating it poses a significant threat to system integrity.
How do I fix CVE-2026-64178?
To mitigate CVE-2026-64178, ensure you update your Linux kernel to the latest version where this vulnerability has been patched.
What systems are affected by CVE-2026-64178?
CVE-2026-64178 affects the Linux kernel, specifically in the Bluetooth subsystem handling BNEP connections.
What kind of vulnerability is CVE-2026-64178?
CVE-2026-64178 is a use-after-free vulnerability related to improper handling of device names in Bluetooth connections.
When was CVE-2026-64178 published?
CVE-2026-64178 was published on July 19, 2026.