CVE-2023-52511Network attack vector

SPI data corruption via wide DMA reads

Published Mar 2, 2024 · Updated May 11, 2026

Data corruption in the sun6i SPI driver in Linux allows attackers to corrupt data received through DMA-enabled SPI transfers. The sun6i_spi_prepare_dma function configured four-byte reads from the RX FIFO, which can lose one or more bytes while a transfer is active. The condition requires a sun6i SPI controller and DMA-enabled receive traffic; the demonstrated consequence is corrupted peripheral data in memory.

CVSS severity5.3
Medium
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Data corruption in the sun6i SPI driver in Linux allows attackers to corrupt data received through DMA-enabled SPI transfers. The sun6i_spi_prepare_dma function configured four-byte reads from the RX FIFO, which can lose one or more bytes while a transfer is active. The condition requires a sun6i SPI controller and DMA-enabled receive traffic; the demonstrated consequence is corrupted peripheral data in memory.

The record

CVE
CVE-2023-52511
Published
Mar 2, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <171f8a49f212e87a8b04087568e1b3d132e36a18
  2. Affected versionversion=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <b3c21c9c7289692f4019f163c3b06d8bdf78b355
  3. Affected versionversion=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <e15bb292b24630ee832bfc7fd616bd72c7682bbb
  4. Affected versionversion=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <ff05ed4ae214011464a0156f05cac1b0b46b5fbc
  5. Affected versionversion=5.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <171f8a49f212e87a8b04087568e1b3d132e36a18; version=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <b3c21c9c7289692f4019f163c3b06d8bdf78b355; version=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <e15bb292b24630ee832bfc7fd616bd72c7682bbb; version=345980a3a5e5e1c99fc621e2ce878fb150ad2287 <ff05ed4ae214011464a0156f05cac1b0b46b5fbc; version=5.11

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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