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MediumFix available

spi: sun6i: reduce DMA RX transfer width to single byte

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: spi: sun6i: reduce DMA RX transfer width to single byte Through empirical testing it has been determined that sometimes RX SPI transfers with DMA enabled return corrupted data. This is down to single or even multiple bytes lost during DMA transfer from SPI peripheral to memory. It seems the RX FIFO within the SPI peripheral can become confused when performing bus read accesses wider than a single byte to it during an active SPI transfer. This patch reduces the width of individual DMA read accesses to the RX FIFO to a single byte to mitigate that issue.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.15.134, 6.1.56, 6.5.6
CVEs
CVE-2023-52511
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 10:37 UTC · Revision 1

Source evidence

spi: sun6i: reduce DMA RX transfer width to single byte

core-osv · Original source

Published 2 Mar 2024, 21:52 UTC

In the Linux kernel, the following vulnerability has been resolved: spi: sun6i: reduce DMA RX transfer width to single byte Through empirical testing it has been determined that sometimes RX SPI transfers with DMA enabled return corrupted data. This is down to single or even multiple bytes lost during DMA transfer from SPI peripheral to memory. It seems the RX FIFO within the SPI peripheral can become confused when performing bus read accesses wider than a single byte to it during an active SPI transfer. This patch reduces the width of individual DMA read accesses to the RX FIFO to a single byte to mitigate that issue.

osv:CVE-2023-52511

Kernel

Fixed versions: 5.15.134, 6.1.56, 6.5.6

Complete source record
{
  "id": "d5579ca059abb29654b207e1a2d4c785df721a03265e3f3f13ef9025abb5d73a",
  "url": "https://osv.dev/vulnerability/CVE-2023-52511",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "spi: sun6i: reduce DMA RX transfer width to single byte",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: spi: sun6i: reduce DMA RX transfer width to single byte Through empirical testing it has been determined that sometimes RX SPI transfers with DMA enabled return corrupted data. This is down to single or even multiple bytes lost during DMA transfer from SPI peripheral to memory. It seems the RX FIFO within the SPI peripheral can become confused when performing bus read accesses wider than a single byte to it during an active SPI transfer. This patch reduces the width of individual DMA read accesses to the RX FIFO to a single byte to mitigate that issue.",
    "evidence": "osv:CVE-2023-52511",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.134",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.56",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-52511",
      "aliases": [
        "CVE-2023-52511"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "345980a3a5e5e1c99fc621e2ce878fb150ad2287"
                },
                {
                  "fixed": "ff05ed4ae214011464a0156f05cac1b0b46b5fbc"
                },
                {
                  "fixed": "e15bb292b24630ee832bfc7fd616bd72c7682bbb"
                },
                {
                  "fixed": "b3c21c9c7289692f4019f163c3b06d8bdf78b355"
                },
                {
                  "fixed": "171f8a49f212e87a8b04087568e1b3d132e36a18"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52511.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.134"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.56"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.5.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52511.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.117786388Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/171f8a49f212e87a8b04087568e1b3d132e36a18",
        "https://git.kernel.org/stable/c/b3c21c9c7289692f4019f163c3b06d8bdf78b355",
        "https://git.kernel.org/stable/c/e15bb292b24630ee832bfc7fd616bd72c7682bbb",
        "https://git.kernel.org/stable/c/ff05ed4ae214011464a0156f05cac1b0b46b5fbc",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52511.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-52511",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52511.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-52511",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494594,
  "published_at": "2024-03-02T21:52:23.277+00:00"
}