Medium severity5.3NVD Advisory· Published Feb 29, 2024· Updated Jun 17, 2026

CVE-2021-47064

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

Affected products

Linux/Kernelcpe-rescue3 versions
5.10+ 2 more
- (no CPE)range: 5.10
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.10,<5.10.37
- (no CPE)

Patches

Vulnerability mechanics

References

git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0cnvdPatch
git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08nvdPatch
git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfcenvdPatch
git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccfnvdPatch

News mentions

No linked articles in our index yet.

cvss	0.345
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000