SB20260816185 - Out-of-bounds read in Linux kernel bluetooth driver
Published: August 16, 2026
Security Bulletin ID
SB20260816185
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-74532)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in btintel_diagnostics() when parsing diagnostics TLV data from a received Bluetooth frame. A local user can send a specially crafted frame to disclose sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/6ec9c3dc52302b891513f608f5fb478349b15ab3
- https://git.kernel.org/stable/c/b640ff9af3c809ff5ea2077fbba17df1594ec1e4
- https://git.kernel.org/stable/c/c31be902ccbbb0b2c23159a1481dce80d1f9753d
- https://git.kernel.org/stable/c/c618a9a5b08ea2e17bddf4e948be9f75d408fca4
- https://git.kernel.org/stable/c/dd20e30bdbd707ea8ced581f3d7f9e9854634b17