CVE-2021-47064
mt76: fix potential DMA mapping leak
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
INFO
Published Date :
Feb. 29, 2024, 11:15 p.m.
Last Modified :
April 8, 2025, 3:10 p.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- n/a
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47064.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47064 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47064
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47064 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47064 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 08, 2025
Action Type Old Value New Value Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.11.21 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.37 Added Reference Type CVE: https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c Added Reference https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 Added Reference https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce Added Reference https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 07, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 29, 2024
Action Type Old Value New Value Added 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 Added Reference Linux https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf [No types assigned]