What’s Vulnerable › Vulnerabilities

CVE-2026-74532: Bluetooth: btintel: Validate length before parsing diagnostics TLV

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Validate length before parsing diagnostics TLV btintel_diagnostics() accesses tlv->val[0] without first validating that the diagnostics VSE is long enough to contain that field, so may cause reading data beyond the received frame. Fix by validating the length before access.

Affected products

• Linux kernel: 6.4 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

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

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