Vulnerability-Lookup

GHSA-CWWQ-5GFF-9X59

Vulnerability from github – Published: 2026-04-22 15:31 – Updated: 2026-04-28 18:30

Details

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

cxl/region: Fix leakage in __construct_region()

Failing the first sysfs_update_group() needs to explicitly kfree the resource as it is too early for cxl_region_iomem_release() to do so.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31529"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T14:16:53Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/region: Fix leakage in __construct_region()\n\nFailing the first sysfs_update_group() needs to explicitly\nkfree the resource as it is too early for cxl_region_iomem_release()\nto do so.",
  "id": "GHSA-cwwq-5gff-9x59",
  "modified": "2026-04-28T18:30:30Z",
  "published": "2026-04-22T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31529"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77b310bb7b5ff8c017524df83292e0242ba89791"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1b4741adf08b0063291ec1b0dfa9c3d55644933"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-31529 (GCVE-0-2026-31529)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-05-11 22:10

Title

cxl/region: Fix leakage in __construct_region()

Summary

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix leakage in __construct_region() Failing the first sysfs_update_group() needs to explicitly kfree the resource as it is too early for cxl_region_iomem_release() to do so.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/f1b4741adf08b0063…
https://git.kernel.org/stable/c/77b310bb7b5ff8c01…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d6602e25819dea2c239972e98e09ba5db4aebd22 , < f1b4741adf08b0063291ec1b0dfa9c3d55644933 (git) Affected: d6602e25819dea2c239972e98e09ba5db4aebd22 , < 77b310bb7b5ff8c017524df83292e0242ba89791 (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 6.19.11 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/region.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f1b4741adf08b0063291ec1b0dfa9c3d55644933",
              "status": "affected",
              "version": "d6602e25819dea2c239972e98e09ba5db4aebd22",
              "versionType": "git"
            },
            {
              "lessThan": "77b310bb7b5ff8c017524df83292e0242ba89791",
              "status": "affected",
              "version": "d6602e25819dea2c239972e98e09ba5db4aebd22",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/region.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "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": "6.19.11",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/region: Fix leakage in __construct_region()\n\nFailing the first sysfs_update_group() needs to explicitly\nkfree the resource as it is too early for cxl_region_iomem_release()\nto do so."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:10:33.610Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f1b4741adf08b0063291ec1b0dfa9c3d55644933"
        },
        {
          "url": "https://git.kernel.org/stable/c/77b310bb7b5ff8c017524df83292e0242ba89791"
        }
      ],
      "title": "cxl/region: Fix leakage in __construct_region()",
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        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31529",
    "datePublished": "2026-04-22T13:54:41.853Z",
    "dateReserved": "2026-03-09T15:48:24.111Z",
    "dateUpdated": "2026-05-11T22:10:33.610Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

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Nomenclature

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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.

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GHSA-CWWQ-5GFF-9X59

CVE-2026-31529 (GCVE-0-2026-31529)

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