Out-of-bounds read in Linux kernel - CVE-2026-74532
Published: August 16, 2026
Vulnerability identifier: #VU143249
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-74532
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-74532
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External 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