CVE-2026-72223 (GCVE-0-2026-72223)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-17 05:10
VLAI
Title
nvdimm/btt: Free arena sub-allocations on discover_arenas() error path
Summary
In the Linux kernel, the following vulnerability has been resolved: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path Memory allocated by btt_freelist_init(), btt_rtt_init(), and btt_maplocks_init() is not freed on some discover_arenas() error paths. This leaks memory when arena discovery fails. Add the missing kfree() calls to release the allocations before returning an error. [ as: commit message and log edits ]
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < 2d0364937550a7b3e2592629c2a68753ac020b28 (git)
Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < eeb95774bc79268e2b78ebf01d8781560b5bd671 (git)
Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < 7563f69caa9143a491d5f26e563255c734751545 (git)
Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < 0b0d9404951aacc9717aa61e77af4a6e9e8f8249 (git)
Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < 873ced7f345e99f7ee16f9ff226515580332ecc4 (git)
Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < 30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5 (git)
Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < ba59b96d8d21dc8729fca44a022ca5919c1848c9 (git)
Affected: 5212e11fde4d40fa627668b4f2222d20db488f71 , < 13fe4cd9ddd0aacb7777812328be525a11ea3fea (git)
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Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 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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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm/btt: Free arena sub-allocations on discover_arenas() error path\n\nMemory allocated by btt_freelist_init(), btt_rtt_init(), and\nbtt_maplocks_init() is not freed on some discover_arenas() error\npaths. This leaks memory when arena discovery fails.\n\nAdd the missing kfree() calls to release the allocations before\nreturning an error.\n\n[ as: commit message and log edits ]"
        }
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T05:26:08+00:00",
      "cve": "CVE-2026-72223",
      "id": "CVE-2026-72223",
      "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: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72223.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.