CVE-2021-47064
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.
Does this matter?
Lower severity and a low EPSS score (0.77%). Track it; it rarely justifies an emergency change on its own.
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
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 0.77% probability · 54th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0cPatch
- https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08Patch
- https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfcePatch
- https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccfPatch
- https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0cPatch
- https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08Patch
- https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfcePatch
- https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccfPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.