CVE Database›Document archive›CVE-2021-47415

CVE-2021-47415

kernel: iwlwifi: mvm: Fix possible NULL dereference

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · October 30, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

iwlwifi: mvm: Fix possible NULL dereference

In __iwl_mvm_remove_time_event() check that 'te_data->vif' is NULL before dereferencing it.

Statement

Red Hat rates this issue as Moderate because exploitation is limited to a local denial of service and requires systems equipped with Intel wireless hardware utilizing the iwlmvm driver. Enterprise server and cloud environments rarely deploy physical Wi-Fi adapters, which substantially restricts real-world exposure. Furthermore, triggering this null pointer dereference can cause a kernel crash but does not compromise system confidentiality or data integrity.

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