CVE-2022-50073

kernel: net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is null

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · June 18, 2025

Updated · June 30, 2026

Description

A flaw was found in the tap module in the Linux kernel. A NULL pointer dereference can be triggered due to a missing initialization, resulting in a denial of service.

Statement

This issue has been fixed in Red Hat Enterprise Linux 8.5 and 9.5 via RHSA-2021:4356 [1] and RHSA-2024:9315 [2], respectively.

[1]. https://access.redhat.com/errata/RHSA-2021:4356

[2]. https://access.redhat.com/errata/RHSA-2024:9315

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference