CVE-2025-38128: Bluetooth: MGMT: reject malformed HCI_CMD_SYNC commands
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: MGMT: reject malformed HCICMDSYNC commands
In 'mgmthcicmdsync()', check whether the size of parameters passed in 'struct mgmtcphcicmdsync' matches the total size of the data (i.e. 'sizeof(struct mgmtcphcicmdsync)' plus trailing bytes). Otherwise, large invalid 'paramslen' will cause 'hcicmdsyncalloc()' to do 'skbputdata()' from an area beyond the one actually passed to 'mgmthcicmdsync()'.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
linux/Kernelto a version that resolves this vulnerability.Fixed in 6.15.3
Event History
Frequently Asked Questions
What is the severity of CVE-2025-38128?
CVE-2025-38128 is considered a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2025-38128?
To fix CVE-2025-38128, update the Linux kernel to the latest patched version provided by your distribution.
What type of vulnerability is CVE-2025-38128?
CVE-2025-38128 is a vulnerability related to malformed commands in the Bluetooth management subsystem of the Linux kernel.
Which versions of the Linux kernel are affected by CVE-2025-38128?
CVE-2025-38128 affects multiple versions of the Linux kernel prior to the remediation that addresses the malformed command issue.
What can be exploited in CVE-2025-38128?
CVE-2025-38128 can be exploited to cause unexpected behavior or system instability in systems utilizing Bluetooth functionality.