SB20261007124 - Allocation of Resources Without Limits or Throttling in Linux kernel sched

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Main Vulnerability Database SB20261007124

SB20261007124 - Allocation of Resources Without Limits or Throttling in Linux kernel sched

Published: October 7, 2026

Security Bulletin ID SB20261007124
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-2026-98234)

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

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to allocation of resources without limits in the heavy-hitter filter (HHF) queuing discipline when processing heavy-hitter flows with an excessively large configured flow limit. A local user can configure an oversized hh_limit and generate spoofed traffic to cause a denial of service.

Exploitation requires CAP_NET_ADMIN in a user namespace.


Remediation

Install update from vendor's website.

References