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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00051.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
27d5c528a7ca08dcd44877fdd9fc08b76630bf77 affected < 9fa26701cd1fc4d932d431971efc5746325bdfce
27d5c528a7ca08dcd44877fdd9fc08b76630bf77 affected < 9b68ce2856dadc0e1cb6fd21fbeb850da49efd08
27d5c528a7ca08dcd44877fdd9fc08b76630bf77 affected < 91b9548d413fda488ea853cd1b9f59b572db3a0c
27d5c528a7ca08dcd44877fdd9fc08b76630bf77 affected < b4403cee6400c5f679e9c4a82b91d61aa961eccf
Linux Linux affected
Version Status Constraints
5.10 affected —
0 unaffected < 5.10
5.10.37 unaffected ≤ 5.10.*
5.11.21 unaffected ≤ 5.11.*
5.12.4 unaffected ≤ 5.12.*
5.13 unaffected ≤ *

Configuration 1 [-]

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

No data.

No data.

Project Subscriptions

Vendors Products
Linux Subscribe
Linux Kernel Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c cve-icon cve-icon
https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 cve-icon cve-icon
https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce cve-icon cve-icon
https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024022954-CVE-2021-47064-f220@gregkh/T/#u cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-47064 cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-47064 cve-icon
History

Tue, 08 Apr 2025 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-401
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Thu, 07 Nov 2024 21:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 2.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N'}

 cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Mon, 04 Nov 2024 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:03:27.593Z

Reserved: 2024-02-29T22:33:44.295Z

Link: CVE-2021-47064

cve-icon Vulnrichment

Updated: 2024-08-04T05:24:39.820Z

cve-icon NVD

Status : Analyzed

Published: 2024-02-29T23:15:07.947

Modified: 2025-04-08T15:10:02.877

Link: CVE-2021-47064

cve-icon Redhat

Severity : Low

Publid Date: 2024-02-29T00:00:00Z

Links: CVE-2021-47064 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses