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416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2021-47064

HistoryFeb 29, 2024 - 11:15 p.m.

CVE-2021-47064

2024-02-2923:15:07

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

vulnerability

dma mapping

AI Score

6.4

Confidence

Low

EPSS

Percentile

15.5%

JSON

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

References

git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c

git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08

git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce

git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf