CVE-2025-38533 (GCVE-0-2025-38533)
Vulnerability from cvelistv5
Published
2025-08-16 11:12
Modified
2025-08-16 11:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix the using of Rx buffer DMA The wx_rx_buffer structure contained two DMA address fields: 'dma' and 'page_dma'. However, only 'page_dma' was actually initialized and used to program the Rx descriptor. But 'dma' was uninitialized and used in some paths. This could lead to undefined behavior, including DMA errors or use-after-free, if the uninitialized 'dma' was used. Althrough such error has not yet occurred, it is worth fixing in the code.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3c47e8ae113a68da47987750d9896e325d0aeedd
Version: 3c47e8ae113a68da47987750d9896e325d0aeedd
Version: 3c47e8ae113a68da47987750d9896e325d0aeedd
Version: 3c47e8ae113a68da47987750d9896e325d0aeedd
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{
  "containers": {
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/wangxun/libwx/wx_lib.c",
            "drivers/net/ethernet/wangxun/libwx/wx_type.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/wangxun/libwx/wx_lib.c",
            "drivers/net/ethernet/wangxun/libwx/wx_type.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
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              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: libwx: fix the using of Rx buffer DMA\n\nThe wx_rx_buffer structure contained two DMA address fields: \u0027dma\u0027 and\n\u0027page_dma\u0027. However, only \u0027page_dma\u0027 was actually initialized and used\nto program the Rx descriptor. But \u0027dma\u0027 was uninitialized and used in\nsome paths.\n\nThis could lead to undefined behavior, including DMA errors or\nuse-after-free, if the uninitialized \u0027dma\u0027 was used. Althrough such\nerror has not yet occurred, it is worth fixing in the code."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-16T11:12:25.978Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5"
        },
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          "url": "https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9"
        },
        {
          "url": "https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367d"
        },
        {
          "url": "https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0"
        }
      ],
      "title": "net: libwx: fix the using of Rx buffer DMA",
      "x_generator": {
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      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38533",
    "datePublished": "2025-08-16T11:12:25.978Z",
    "dateReserved": "2025-04-16T04:51:24.023Z",
    "dateUpdated": "2025-08-16T11:12:25.978Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38533\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-16T12:15:28.957\",\"lastModified\":\"2025-08-16T12:15:28.957\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: libwx: fix the using of Rx buffer DMA\\n\\nThe wx_rx_buffer structure contained two DMA address fields: \u0027dma\u0027 and\\n\u0027page_dma\u0027. However, only \u0027page_dma\u0027 was actually initialized and used\\nto program the Rx descriptor. But \u0027dma\u0027 was uninitialized and used in\\nsome paths.\\n\\nThis could lead to undefined behavior, including DMA errors or\\nuse-after-free, if the uninitialized \u0027dma\u0027 was used. Althrough such\\nerror has not yet occurred, it is worth fixing in the code.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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