SB2025092473 - Buffer overflow in Linux kernel bluetooth
Published: September 24, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025092473
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2025-39889)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the l2cap_connect() function in net/bluetooth/l2cap_core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/24b2cdfc16e9bd6ab3d03b8e01c590755bd3141f
- https://git.kernel.org/stable/c/522e9ed157e3c21b4dd623c79967f72c21e45b78
- https://git.kernel.org/stable/c/9e3114958d87ea88383cbbf38c89e04b8ea1bce5
- https://git.kernel.org/stable/c/c6d527bbd3d3896375079f5dbc8b7f96734a3ba5
- https://git.kernel.org/stable/c/d49798ecd26e0ee7995a7fc1e90ca5cd9b4402d6
- https://git.kernel.org/stable/c/d4ca2fd218caafbf50e3343ba1260c6a23b5676a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.4