SB20260325172 - Resource exhaustion in Linux kernel irqchip driver

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Main Vulnerability Database SB20260325172

SB20260325172 - Resource exhaustion in Linux kernel irqchip driver

Published: March 25, 2026

Security Bulletin ID SB20260325172
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 security vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2026-23287)

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

The vulnerability exists due to improper handling of interrupt completion in the irqchip/sifive-plic component when changing interrupt affinity settings. A local user can trigger a scenario where interrupt completion is silently ignored, leading to a frozen interrupt state and resulting in a denial of service.

The issue arises specifically when interrupt affinity is modified concurrently with interrupt handling, causing the UART port or other interrupt-driven devices to become unresponsive.


Remediation

Install update from vendor's website.

References