Vulnerability-Lookup

GHSA-CRF5-4J2Q-5XRQ

Vulnerability from github – Published: 2026-04-24 15:32 – Updated: 2026-04-24 15:32

Details

In the Linux kernel, the following vulnerability has been resolved:

x86/platform/uv: Handle deconfigured sockets

When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes a panic while allocating UV hub info structures.

Fix this by using NUMA_NO_NODE, allowing UV hub info structures to be allocated on valid nodes.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31542"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/platform/uv: Handle deconfigured sockets\n\nWhen a socket is deconfigured, it\u0027s mapped to SOCK_EMPTY (0xffff). This causes\na panic while allocating UV hub info structures.\n\nFix this by using NUMA_NO_NODE, allowing UV hub info structures to be\nallocated on valid nodes.",
  "id": "GHSA-crf5-4j2q-5xrq",
  "modified": "2026-04-24T15:32:33Z",
  "published": "2026-04-24T15:32:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31542"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9956d4892e78812246336c7ea51f5aa62018049e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31542 (GCVE-0-2026-31542)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:33 – Updated: 2026-04-24 14:33

Title

x86/platform/uv: Handle deconfigured sockets

Summary

In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Handle deconfigured sockets When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes a panic while allocating UV hub info structures. Fix this by using NUMA_NO_NODE, allowing UV hub info structures to be allocated on valid nodes.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/c51957601d32c0d19…
	https://git.kernel.org/stable/c/9956d4892e7881224…
	https://git.kernel.org/stable/c/79f0faf81d3bbbe5f…
	https://git.kernel.org/stable/c/c1cf2218d2fa40a49…
	https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8…

Impacted products

Vendor

Product

Version

Linux

Affected: 8a50c58519271dd24ba760bb282875f6ad66ee71 , < c51957601d32c0d195bce0b9345dfe93ef5728cc (git)
Affected: 8a50c58519271dd24ba760bb282875f6ad66ee71 , < 9956d4892e78812246336c7ea51f5aa62018049e (git)
Affected: 8a50c58519271dd24ba760bb282875f6ad66ee71 , < 79f0faf81d3bbbe5f07bf6892450d3740a1b290d (git)
Affected: 8a50c58519271dd24ba760bb282875f6ad66ee71 , < c1cf2218d2fa40a49921a7460981e5faab26f04e (git)
Affected: 8a50c58519271dd24ba760bb282875f6ad66ee71 , < 1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3 (git)

Linux

Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.20 , ≤ 6.18.* (semver)
Unaffected: 6.19.10 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kernel/apic/x2apic_uv_x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c51957601d32c0d195bce0b9345dfe93ef5728cc",
              "status": "affected",
              "version": "8a50c58519271dd24ba760bb282875f6ad66ee71",
              "versionType": "git"
            },
            {
              "lessThan": "9956d4892e78812246336c7ea51f5aa62018049e",
              "status": "affected",
              "version": "8a50c58519271dd24ba760bb282875f6ad66ee71",
              "versionType": "git"
            },
            {
              "lessThan": "79f0faf81d3bbbe5f07bf6892450d3740a1b290d",
              "status": "affected",
              "version": "8a50c58519271dd24ba760bb282875f6ad66ee71",
              "versionType": "git"
            },
            {
              "lessThan": "c1cf2218d2fa40a49921a7460981e5faab26f04e",
              "status": "affected",
              "version": "8a50c58519271dd24ba760bb282875f6ad66ee71",
              "versionType": "git"
            },
            {
              "lessThan": "1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3",
              "status": "affected",
              "version": "8a50c58519271dd24ba760bb282875f6ad66ee71",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kernel/apic/x2apic_uv_x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.78",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.130",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.78",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
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        {
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-24T14:33:11.205Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc"
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        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d"
        },
        {
          "url": "https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e"
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        {
          "url": "https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3"
        }
      ],
      "title": "x86/platform/uv: Handle deconfigured sockets",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31542",
    "datePublished": "2026-04-24T14:33:11.205Z",
    "dateReserved": "2026-03-09T15:48:24.114Z",
    "dateUpdated": "2026-04-24T14:33:11.205Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-CRF5-4J2Q-5XRQ

CVE-2026-31542 (GCVE-0-2026-31542)

Tags

Sightings

Nomenclature