SB2026042550 - Allocation of Resources Without Limits or Throttling in Linux kernel rfkill

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Main Vulnerability Database SB2026042550

SB2026042550 - Allocation of Resources Without Limits or Throttling in Linux kernel rfkill

Published: April 25, 2026

Security Bulletin ID SB2026042550
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-31670)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

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


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource management in the rfkill event handling logic when userspace creates rfkill events without consuming them from the rfkill file descriptor. A local user can create an unlimited number of pending rfkill events to cause a denial of service.

The issue can lead to an out-of-memory condition on systems configured to allow userspace to create such events.


Remediation

Install update from vendor's website.

References