Vulnerability-Lookup

GHSA-WXQW-C972-64F8

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-23 15:32

Details

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

fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list

A pseudo-locked group's RMID is freed when it is created. On unmount rmdir_all_sub() unconditionally frees all RMID of all groups, resulting in a double-free of the pseudo-locked group's RMID. The consequence of this is that the original free results in the pseudo-locked group's RMID being added to the rmid_free_lru linked list and the second free then attempts to add the same RMID entry to the rmid_free_lru again.

Do not double-free a pseudo-locked group's RMID.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72015"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:00Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/resctrl: Fix double-add of pseudo-locked region\u0027s RMID to free list\n\nA pseudo-locked group\u0027s RMID is freed when it is created. On unmount\nrmdir_all_sub() unconditionally frees all RMID of all groups, resulting\nin a double-free of the pseudo-locked group\u0027s RMID. The consequence of this\nis that the original free results in the pseudo-locked group\u0027s RMID being\nadded to the rmid_free_lru linked list and the second free then attempts\nto add the same RMID entry to the rmid_free_lru again.\n\nDo not double-free a pseudo-locked group\u0027s RMID.",
  "id": "GHSA-wxqw-c972-64f8",
  "modified": "2026-08-23T15:32:58Z",
  "published": "2026-08-15T06:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72015"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52007bfdce5310e8c8a29849bfbfb188a1e50ca0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52b769165f20b38092f28ce064b4b143471540a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9168176894332312c12ef052e784735dbf4ffe3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad12e70d7dc3c94a05efc61d1e4861078e0e162b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2fe9e140aa94b2816aab7ebc692b543e418f5e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9f089723aee892efc77c349ae47a6b452b293c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bab7dbba38ed3011972c3d9be2dcdca7575cbe32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7628eea9212e185a09df3aea603ca8580b8678d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72015 (GCVE-0-2026-72015)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:51 – Updated: 2026-08-23 12:46

Title

fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list

Summary

In the Linux kernel, the following vulnerability has been resolved: fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list A pseudo-locked group's RMID is freed when it is created. On unmount rmdir_all_sub() unconditionally frees all RMID of all groups, resulting in a double-free of the pseudo-locked group's RMID. The consequence of this is that the original free results in the pseudo-locked group's RMID being added to the rmid_free_lru linked list and the second free then attempts to add the same RMID entry to the rmid_free_lru again. Do not double-free a pseudo-locked group's RMID.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/bab7dbba38ed30119…
https://git.kernel.org/stable/c/ad12e70d7dc3c94a0…
https://git.kernel.org/stable/c/52b769165f20b3809…
https://git.kernel.org/stable/c/9168176894332312c…
https://git.kernel.org/stable/c/b2fe9e140aa94b281…
https://git.kernel.org/stable/c/52007bfdce5310e8c…
https://git.kernel.org/stable/c/f7628eea9212e185a…
https://git.kernel.org/stable/c/b9f089723aee892ef…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < bab7dbba38ed3011972c3d9be2dcdca7575cbe32 (git) Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < ad12e70d7dc3c94a05efc61d1e4861078e0e162b (git) Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < 52b769165f20b38092f28ce064b4b143471540a7 (git) Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < 9168176894332312c12ef052e784735dbf4ffe3f (git) Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < b2fe9e140aa94b2816aab7ebc692b543e418f5e3 (git) Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < 52007bfdce5310e8c8a29849bfbfb188a1e50ca0 (git) Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < f7628eea9212e185a09df3aea603ca8580b8678d (git) Affected: e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 , < b9f089723aee892efc77c349ae47a6b452b293c4 (git)
Linux	Linux	Affected: 4.19 Unaffected: 0 , < 4.19 (semver) Unaffected: 5.10.266 , ≤ 5.10.* (semver) Unaffected: 5.15.217 , ≤ 5.15.* (semver) Unaffected: 6.1.184 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/resctrl/rdtgroup.c"
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          "vendor": "Linux",
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              "status": "affected",
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            },
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              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.10.266",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.217",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
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            },
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              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
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              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/resctrl: Fix double-add of pseudo-locked region\u0027s RMID to free list\n\nA pseudo-locked group\u0027s RMID is freed when it is created. On unmount\nrmdir_all_sub() unconditionally frees all RMID of all groups, resulting\nin a double-free of the pseudo-locked group\u0027s RMID. The consequence of this\nis that the original free results in the pseudo-locked group\u0027s RMID being\nadded to the rmid_free_lru linked list and the second free then attempts\nto add the same RMID entry to the rmid_free_lru again.\n\nDo not double-free a pseudo-locked group\u0027s RMID."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-23T12:46:25.496Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/52b769165f20b38092f28ce064b4b143471540a7"
        },
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        {
          "url": "https://git.kernel.org/stable/c/f7628eea9212e185a09df3aea603ca8580b8678d"
        },
        {
          "url": "https://git.kernel.org/stable/c/b9f089723aee892efc77c349ae47a6b452b293c4"
        }
      ],
      "title": "fs/resctrl: Fix double-add of pseudo-locked region\u0027s RMID to free list",
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        "engine": "bippy-1.2.0"
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    "cveId": "CVE-2026-72015",
    "datePublished": "2026-08-15T05:51:43.390Z",
    "dateReserved": "2026-08-09T03:40:39.900Z",
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    "state": "PUBLISHED"
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-WXQW-C972-64F8

CVE-2026-72015 (GCVE-0-2026-72015)

Tags

Sightings

Nomenclature