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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43020 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0f37d1e65c6d71ad94ccfb5c602163c525db789d kernel.org Patch 
https://git.kernel.org/stable/c/257cdb960d8ff6d60bb6461b03c814b6cf0c9e64 kernel.org Patch 
https://git.kernel.org/stable/c/40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009 kernel.org Patch 
https://git.kernel.org/stable/c/50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257 kernel.org Patch 
https://git.kernel.org/stable/c/82f342b3b006ca1d65f4890c05f2ec32fcb808b6 kernel.org Patch 
https://git.kernel.org/stable/c/b8dbe9648d69059cfe3a28917bfbf7e61efd7f15 kernel.org Patch 
https://git.kernel.org/stable/c/c34577f517b556fb6ca173d45bf7e766ae2564ce kernel.org Patch 
https://git.kernel.org/stable/c/f71695e81f4cb428f3c7e2138eae88199005b52c kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43020
NVD Published Date:
05/01/2026
NVD Last Modified:
05/08/2026
Source:
kernel.org