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

Vulnerability from cvelistv5 – Published: 2026-08-15 05:51 – Updated: 2026-08-23 12:46
VLAI
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
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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{
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          "programFiles": [
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              "version": "0",
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              "versionType": "semver"
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              "versionType": "semver"
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      "cpeApplicability": [
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          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-23T12:46:25.496Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/bab7dbba38ed3011972c3d9be2dcdca7575cbe32"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad12e70d7dc3c94a05efc61d1e4861078e0e162b"
        },
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          "url": "https://git.kernel.org/stable/c/52b769165f20b38092f28ce064b4b143471540a7"
        },
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        {
          "url": "https://git.kernel.org/stable/c/b9f089723aee892efc77c349ae47a6b452b293c4"
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      ],
      "title": "fs/resctrl: Fix double-add of pseudo-locked region\u0027s RMID to free list",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72015",
    "datePublished": "2026-08-15T05:51:43.390Z",
    "dateReserved": "2026-08-09T03:40:39.900Z",
    "dateUpdated": "2026-08-23T12:46:25.496Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "date": "2026-08-24",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-17T16:06:01+00:00",
      "cve": "CVE-2026-72015",
      "id": "CVE-2026-72015",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fs/resctrl: Fix double-add of pseudo-locked region\u0027s RMID to free list",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72015.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.