SB20260424213 - Resource exhaustion in Linux kernel bluetooth

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Main Vulnerability Database SB20260424213

SB20260424213 - Resource exhaustion in Linux kernel bluetooth

Published: April 24, 2026

Security Bulletin ID SB20260424213
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2026-31498)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper resource management in the Bluetooth L2CAP ERTM implementation when processing configuration requests and segmenting user-supplied protocol data. A remote attacker can send specially crafted L2CAP configuration data to cause a denial of service.

The issue can be triggered during channel reconfiguration in the connected state, and a zero remote_mps value can lead to an infinite loop that exhausts available memory.


Remediation

Install update from vendor's website.

References