SB20260815176 - Out-of-bounds read in Linux kernel bluetooth

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Main Vulnerability Database SB20260815176

SB20260815176 - Out-of-bounds read in Linux kernel bluetooth

Published: August 15, 2026

Security Bulletin ID SB20260815176
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-74300)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in hci_read_codec_capabilities() when parsing a malformed controller response containing truncated codec capability elements. A remote attacker can send a specially crafted controller response to disclose sensitive information.

The issue occurs because the parser validates only the payload length and can record a two-byte capability after receiving only one payload byte.


Remediation

Install update from vendor's website.

References