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

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce patch
https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08 patch
https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c patch
https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf patch

Frequently Asked Questions

What is the severity of CVE-2021-47064?
CVE-2021-47064 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47064?
To fix CVE-2021-47064, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47064 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47064 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47064?
CVE-2021-47064 affects Linux Linux, Linux Linux.
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