FKIE_CVE-2026-46142

Vulnerability from fkie_nvd - Published: 2026-05-28 10:16 - Updated: 2026-06-17 10:53
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix VF illegal register access Register WX_CFG_PORT_ST is a PF restricted register. When a VF is initialized, attempting to read this register triggers an illegal register access, which lead to a system hang. When the device is VF, the bus function ID can be obtained directly from the PCI_FUNC(pdev->devfn).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/33c5bb50b9c40e8451e6aec4487a31d794b98d92
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/68a007a701bc06fa426507c551ef12514f2e721d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/694de316f607fe2473d52ca0707e3918e72c1562
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3bd8040497968f6f5470018724ef7b0df92f707
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/wangxun/libwx/wx_hw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d3bd8040497968f6f5470018724ef7b0df92f707",
              "status": "affected",
              "version": "d4187ec2641061748480cdc944fd07653fad50d5",
              "versionType": "git"
            },
            {
              "lessThan": "f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0",
              "status": "affected",
              "version": "f0b3ecdbb5bbee8ca6b2892aba3988c8a3ce858e",
              "versionType": "git"
            },
            {
              "lessThan": "33c5bb50b9c40e8451e6aec4487a31d794b98d92",
              "status": "affected",
              "version": "a04ea57aae375bdda1cb57034d8bcbb351e1f973",
              "versionType": "git"
            },
            {
              "lessThan": "68a007a701bc06fa426507c551ef12514f2e721d",
              "status": "affected",
              "version": "a04ea57aae375bdda1cb57034d8bcbb351e1f973",
              "versionType": "git"
            },
            {
              "lessThan": "694de316f607fe2473d52ca0707e3918e72c1562",
              "status": "affected",
              "version": "a04ea57aae375bdda1cb57034d8bcbb351e1f973",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "93e52b75f11a8f39b22993ae315b5b9a6b2668a3",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.140",
              "status": "affected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.88",
              "status": "affected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18",
              "status": "affected",
              "version": "6.17.8",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/wangxun/libwx/wx_hw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: libwx: fix VF illegal register access\n\nRegister WX_CFG_PORT_ST is a PF restricted register. When a VF is\ninitialized, attempting to read this register triggers an illegal\nregister access, which lead to a system hang.\n\nWhen the device is VF, the bus function ID can be obtained directly from\nthe PCI_FUNC(pdev-\u003edevfn)."
    }
  ],
  "id": "CVE-2026-46142",
  "lastModified": "2026-06-17T10:53:08.457",
  "metrics": {},
  "published": "2026-05-28T10:16:29.790",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/33c5bb50b9c40e8451e6aec4487a31d794b98d92"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/68a007a701bc06fa426507c551ef12514f2e721d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/694de316f607fe2473d52ca0707e3918e72c1562"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3bd8040497968f6f5470018724ef7b0df92f707"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.