CVE-2026-46142 (GCVE-0-2026-46142)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:35 – Updated: 2026-06-14 17:57
VLAI
Title
net: libwx: fix VF illegal register access
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).
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: d4187ec2641061748480cdc944fd07653fad50d5 , < d3bd8040497968f6f5470018724ef7b0df92f707 (git)
Affected: f0b3ecdbb5bbee8ca6b2892aba3988c8a3ce858e , < f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0 (git)
Affected: a04ea57aae375bdda1cb57034d8bcbb351e1f973 , < 33c5bb50b9c40e8451e6aec4487a31d794b98d92 (git)
Affected: a04ea57aae375bdda1cb57034d8bcbb351e1f973 , < 68a007a701bc06fa426507c551ef12514f2e721d (git)
Affected: a04ea57aae375bdda1cb57034d8bcbb351e1f973 , < 694de316f607fe2473d52ca0707e3918e72c1562 (git)
Affected: 93e52b75f11a8f39b22993ae315b5b9a6b2668a3 (git)
Affected: 6.6.117 , < 6.6.140 (semver)
Affected: 6.12.58 , < 6.12.88 (semver)
Affected: 6.17.8 , < 6.18 (semver)
Create a notification for this product.
Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website

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          "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)."
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    "dateReserved": "2026-05-13T15:03:33.100Z",
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      "title": "net: libwx: fix VF illegal register access",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46142.json",
      "version": "3"
    },
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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 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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T11:51:34+00:00",
      "cve": "CVE-2026-46142",
      "id": "CVE-2026-46142",
      "initial_release_date": "2026-05-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: libwx: fix VF illegal register access",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46142.json",
      "version": "3"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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