SB20261022139 - Race condition in Linux kernel nfp crypto driver

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Main Vulnerability Database SB20261022139

SB20261022139 - Race condition in Linux kernel nfp crypto driver

Published: October 22, 2026

Security Bulletin ID SB20261022139
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) Race condition (CVE-ID: CVE-2026-98561)

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

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to potentially cause a denial of service through a kernel crash.

The vulnerability exists due to a race condition in the nfp_net_ipsec_rx() function of the Linux kernel's Netronome NFP driver when receiving IPsec packets concurrently with state deletion. A local user can trigger overlapping receive processing and state deletion to cause reference acquisition on an xfrm_state whose reference count has already reached zero, potentially causing a kernel crash.


Remediation

Install update from vendor's website.

References