BaseFortify

Publication date: 2026-01-31

Last updated on: 2026-03-25

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: net: 3com: 3c59x: fix possible null dereference in vortex_probe1() pdev can be null and free_ring: can be called in 1297 with a null pdev.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-01-31

Last Modified

2026-03-25

Generated

2026-07-07

AI Q&A

2026-01-31

EPSS Evaluated

2026-07-05

NVD

CVE-2026-23020

EUVD

EUVD-2026-5074

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	4.17
linux	linux_kernel	From 5.11 (inc) to 5.15.198 (exc)
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	From 6.13 (inc) to 6.18.6 (exc)
linux	linux_kernel	From 6.2 (inc) to 6.6.121 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.66 (exc)
linux	linux_kernel	From 5.16 (inc) to 6.1.161 (exc)
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	From 4.17.1 (inc) to 5.10.248 (exc)
linux	linux_kernel	From 4.16.12 (inc) to 4.17 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

Executive Summary

This vulnerability is a possible null pointer dereference in the Linux kernel's 3com 3c59x network driver, specifically in the function vortex_probe1(). The issue arises because the pdev (platform device) pointer can be null, and the function free_ring can be called with this null pdev, potentially causing a crash or undefined behavior.

Impact Analysis

If exploited or triggered, this vulnerability can cause the affected system to crash or behave unpredictably due to a null pointer dereference in the network driver. This could lead to denial of service or system instability.

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