SB2026102235 - Race condition in Linux kernel riscv kvm

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Main Vulnerability Database SB2026102235

SB2026102235 - Race condition in Linux kernel riscv kvm

Published: October 22, 2026

Security Bulletin ID SB2026102235
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-98465)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to read or modify another vCPU's interrupt file without authorization.

The vulnerability exists due to a race condition in the RISC-V KVM IMSIC attribute handling code when device ioctl operations run concurrently with vCPU migration. A local user can race a GET or SET attribute operation against migration to access another vCPU's interrupt file through stale physical CPU and HGEI values.


Remediation

Install update from vendor's website.

References