EUVD-2026-26619CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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7DescriptionNVD
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.
AnalysisAI
Stack buffer overflow in Linux kernel Bluetooth MGMT subsystem allows local authenticated attackers to execute arbitrary code with elevated privileges. The vulnerability stems from insufficient validation of the encryption key size (enc_size) parameter when loading Long Term Keys (LTKs) via the Bluetooth management interface. …
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RemediationAI
Within 24 hours: Identify all Linux systems with Bluetooth MGMT subsystem enabled using asset inventory and configuration management tools. Within 7 days: Apply vendor-released kernel patches across all affected systems, prioritizing systems with untrusted local user access or multi-tenant deployments; test patches in non-production environments first. …
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