github - ghsa-qmw3-6h2f-2gvh

GHSA-QMW3-6H2F-2GVH

Vulnerability from github – Published: 2025-08-16 12:30 – Updated: 2025-11-18 18:32

Details

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.

Severity ?

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38533"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-16T12:15:28Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-qmw3-6h2f-2gvh",
  "modified": "2025-11-18T18:32:48Z",
  "published": "2025-08-16T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38533"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38533 (GCVE-0-2025-38533)

Vulnerability from cvelistv5 – Published: 2025-08-16 11:12 – Updated: 2025-08-16 11:12

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.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/027701180a7bcb64c…
	https://git.kernel.org/stable/c/ba7c793f96c1c2b94…
	https://git.kernel.org/stable/c/05c37b574997892a4…
	https://git.kernel.org/stable/c/5fd77cc6bd9b36843…

Impacted products

Vendor

Product

Version

Linux

Affected: 3c47e8ae113a68da47987750d9896e325d0aeedd , < 027701180a7bcb64c42eab291133ef0c87b5b6c5 (git)
Affected: 3c47e8ae113a68da47987750d9896e325d0aeedd , < ba7c793f96c1c2b944bb6f423d7243f3afc30fe9 (git)
Affected: 3c47e8ae113a68da47987750d9896e325d0aeedd , < 05c37b574997892a40a0e9b9b88a481566b2367d (git)
Affected: 3c47e8ae113a68da47987750d9896e325d0aeedd , < 5fd77cc6bd9b368431a815a780e407b7781bcca0 (git)

Linux

Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.6.100 , ≤ 6.6.* (semver)
Unaffected: 6.12.40 , ≤ 6.12.* (semver)
Unaffected: 6.15.8 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "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": [
            {
              "lessThan": "027701180a7bcb64c42eab291133ef0c87b5b6c5",
              "status": "affected",
              "version": "3c47e8ae113a68da47987750d9896e325d0aeedd",
              "versionType": "git"
            },
            {
              "lessThan": "ba7c793f96c1c2b944bb6f423d7243f3afc30fe9",
              "status": "affected",
              "version": "3c47e8ae113a68da47987750d9896e325d0aeedd",
              "versionType": "git"
            },
            {
              "lessThan": "05c37b574997892a40a0e9b9b88a481566b2367d",
              "status": "affected",
              "version": "3c47e8ae113a68da47987750d9896e325d0aeedd",
              "versionType": "git"
            },
            {
              "lessThan": "5fd77cc6bd9b368431a815a780e407b7781bcca0",
              "status": "affected",
              "version": "3c47e8ae113a68da47987750d9896e325d0aeedd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "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"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.100",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.100",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.40",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.8",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                }
              ],
              "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"
        },
        {
          "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": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "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"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-QMW3-6H2F-2GVH

CVE-2025-38533 (GCVE-0-2025-38533)

Tags

Sightings

Nomenclature