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CVE-2026-43020

HIGH CVSS: 7.8 Published: 2026-05-01 Modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer. Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.

Affected Platforms

Linux Linux Kernel

Weakness Type

CWE-787

References