PT-2025-42257 · Linux+5 · Linux Kernel+5
Published
2025-10-15
·
Updated
2026-05-07
·
CVE-2025-39982
CVSS v2.0
7.7
High
| Vector | AV:A/AC:L/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.16.0-rc7
Description
The Linux kernel contains a use-after-free issue within the Bluetooth stack, specifically in the
hci acl create conn sync function. This flaw occurs when a connection is pending command submission and is freed prematurely. The issue is related to handling Bluetooth connections and can lead to system instability or potential code execution. The vulnerability is triggered during the handling of HCI ACL (Asynchronous Connection-Less) packets. The root cause is a race condition where a connection object is freed while still being used. The vulnerability is present in the handling of HCI events and can be triggered through the hci connect acl function.Recommendations
Update the Linux kernel to version 6.16.0-rc7 or later.
Exploit
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Hat
Suse
Ubuntu