CVE-2026-23020

MEDIUM
2026-01-31 416baaa9-dc9f-4396-8d5f-8c081fb06d67
5.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Patch Released
Mar 16, 2026 - 15:00 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 22:00 vuln.today
CVE Published
Jan 31, 2026 - 12:16 nvd
MEDIUM 5.5

Tags

Linux Null Pointer Dereference Denial Of Service Linux Kernel Redhat Suse

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.

Analysis

The 3com 3c59x driver in the Linux kernel is susceptible to a null pointer dereference in the vortex_probe1() function when pdev is null, potentially causing a denial of service through system crash or hang. A local attacker with unprivileged access can trigger this condition during driver initialization. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

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Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +28
POC: 0

Vendor Status

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CVE-2026-23020 vulnerability details – vuln.today
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