CVE-2021-47064

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

29/02/2024

Last modified:

08/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved: mt76: fix potential DMA mapping leak With buf uninitialized in mt76_dma_tx_queue_skb_raw, its field skip_unmap could potentially inherit a non-zero value from stack garbage. If this happens, it will cause DMA mappings for MCU command frames to not be unmapped after completion

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x

5.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.10 (including)	5.10.37 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.11.21 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.12 (including)	5.12.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-47064

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools