CVE-2021-47064

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47064
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

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c Patch
https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 Patch
https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce Patch
https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf Patch
https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c Patch
https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 Patch
https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce Patch
https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

08 Apr 2025, 15:10

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c - () https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c - Patch
References () https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 - () https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 - Patch
References () https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce - () https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce - Patch
References () https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf - () https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf - Patch
CWE CWE-401
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c - () https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c -
References () https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 - () https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 -
References () https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce - () https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce -
References () https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf - () https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf -

07 Nov 2024, 21:35

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.3

01 Mar 2024, 14:04

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: mt76: corrige una posible fuga de mapeo DMA Con buf no inicializado en mt76_dma_tx_queue_skb_raw, su campo skip_unmap podría potencialmente heredar un valor distinto de cero de la basura de la pila. Si esto sucede, las asignaciones DMA para las tramas de comando MCU no se desasignarán una vez finalizadas.

29 Feb 2024, 23:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-29 23:15

Updated : 2025-04-08 15:10

NVD link : CVE-2021-47064

Mitre link : CVE-2021-47064

CVE.ORG link : CVE-2021-47064

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime