VULNERABILITY INTELLIGENCE

CVE-2026-43020

CVSS score7.8 HIGH
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-05-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-787

Primary references