CVE-2021-47064

low-risk
Published 2024-02-29

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

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (8)

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 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
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal