CVEvulnerability
CVE-2021-47064
5.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2024-02-29
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-401
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 configurations
• linux linux kernel (>= 5.10 < 5.10.37)
• linux linux kernel (>= 5.11 < 5.11.21)
• linux linux kernel (>= 5.12 < 5.12.4)
Related
Weakness · CWE (1)
- CWE-401 Missing Release of Memory after Effective Lifetime weakness
References
- 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 Patch