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CVE-2021-47064

MEDIUM
Published 2024-02-29T22:37:38.257Z
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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.178
Higher than 17.8% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
LOW

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

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

27d5c528a7ca08dcd44877fdd9fc08b76630bf77 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 27d5c528a7ca08dcd44877fdd9fc08b76630bf77
Linux

Linux

Affected Versions:

5.10 0 5.10.37 5.11.21 5.12.4 5.13

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-vv74-wh7g-52xw

Advisory Details

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

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47064
WEB https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c
WEB https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08
WEB https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce
WEB https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf

Advisory provided by GitHub Security Advisory Database. Published: March 1, 2024, Modified: November 8, 2024

References

https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce
https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08
https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c
https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf
Published: 2024-02-29T22:37:38.257Z
Last Modified: 2025-05-04T07:03:27.593Z
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