Riskcovery

CVE-2021-47064

mt76: fix potential DMA mapping leak

State
Published
Severity
5.3 Medium
Published
Feb 29, 2024
Updated
May 11, 2026
Reserved
Feb 29, 2024

Read the record on cve.org

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

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LCISA-ADP

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 to before 9fa26701cd1fc4d932d431971efc5746325bdfceAffected
  • 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 to before 9b68ce2856dadc0e1cb6fd21fbeb850da49efd08Affected
  • 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 to before 91b9548d413fda488ea853cd1b9f59b572db3a0cAffected
  • 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 to before b4403cee6400c5f679e9c4a82b91d61aa961eccfAffected
LinuxLinux
  • 5.10Affected
  • before 5.10Not affected
  • 5.10.37 through 5.10.*Not affected
  • 5.11.21 through 5.11.*Not affected
  • 5.12.4 through 5.12.*Not affected
  • 5.13 and laterNot affected

References

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