Vulnerability-Lookup

GHSA-9686-WRHG-JJG6

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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

md/raid1: fix memory leak in raid1_run()

raid1_run() calls setup_conf() which registers a thread via md_register_thread(). If raid1_set_limits() fails, the previously registered thread is not unregistered, resulting in a memory leak of the md_thread structure and the thread resource itself.

Add md_unregister_thread() to the error path to properly cleanup the thread, which aligns with the error handling logic of other paths in this function.

Compile tested only. Issue found using a prototype static analysis tool and code review.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-45888"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:02Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: fix memory leak in raid1_run()\n\nraid1_run() calls setup_conf() which registers a thread via\nmd_register_thread(). If raid1_set_limits() fails, the previously\nregistered thread is not unregistered, resulting in a memory leak\nof the md_thread structure and the thread resource itself.\n\nAdd md_unregister_thread() to the error path to properly cleanup\nthe thread, which aligns with the error handling logic of other paths\nin this function.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review.",
  "id": "GHSA-9686-wrhg-jjg6",
  "modified": "2026-05-27T15:33:15Z",
  "published": "2026-05-27T15:33:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45888"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-45888 (GCVE-0-2026-45888)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:16 – Updated: 2026-05-27 12:16

Title

md/raid1: fix memory leak in raid1_run()

Summary

In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in raid1_run() raid1_run() calls setup_conf() which registers a thread via md_register_thread(). If raid1_set_limits() fails, the previously registered thread is not unregistered, resulting in a memory leak of the md_thread structure and the thread resource itself. Add md_unregister_thread() to the error path to properly cleanup the thread, which aligns with the error handling logic of other paths in this function. Compile tested only. Issue found using a prototype static analysis tool and code review.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/c94fd6e8a71efd047…
https://git.kernel.org/stable/c/ec10e3dc93994b87a…
https://git.kernel.org/stable/c/b37588b0282a2b3cd…
https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 97894f7d3c2966164516a8a5109674763d3a55e1 , < c94fd6e8a71efd047ff36930e840f3c25679e136 (git) Affected: 97894f7d3c2966164516a8a5109674763d3a55e1 , < ec10e3dc93994b87adf7c759a4639fe34013989a (git) Affected: 97894f7d3c2966164516a8a5109674763d3a55e1 , < b37588b0282a2b3cdda9db1d53712745ce66dea0 (git) Affected: 97894f7d3c2966164516a8a5109674763d3a55e1 , < 6abc7d5dcf0ee0f85e16e41c87fbd06231f28753 (git)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid1.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c94fd6e8a71efd047ff36930e840f3c25679e136",
              "status": "affected",
              "version": "97894f7d3c2966164516a8a5109674763d3a55e1",
              "versionType": "git"
            },
            {
              "lessThan": "ec10e3dc93994b87adf7c759a4639fe34013989a",
              "status": "affected",
              "version": "97894f7d3c2966164516a8a5109674763d3a55e1",
              "versionType": "git"
            },
            {
              "lessThan": "b37588b0282a2b3cdda9db1d53712745ce66dea0",
              "status": "affected",
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              "versionType": "git"
            },
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              "status": "affected",
              "version": "97894f7d3c2966164516a8a5109674763d3a55e1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
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                }
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              "negate": false,
              "operator": "OR"
            }
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: fix memory leak in raid1_run()\n\nraid1_run() calls setup_conf() which registers a thread via\nmd_register_thread(). If raid1_set_limits() fails, the previously\nregistered thread is not unregistered, resulting in a memory leak\nof the md_thread structure and the thread resource itself.\n\nAdd md_unregister_thread() to the error path to properly cleanup\nthe thread, which aligns with the error handling logic of other paths\nin this function.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:16:59.751Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753"
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      ],
      "title": "md/raid1: fix memory leak in raid1_run()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45888",
    "datePublished": "2026-05-27T12:16:59.751Z",
    "dateReserved": "2026-05-13T15:03:33.082Z",
    "dateUpdated": "2026-05-27T12:16:59.751Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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-9686-WRHG-JJG6

CVE-2026-45888 (GCVE-0-2026-45888)

Tags

Sightings

Nomenclature