CVE-2026-72223 (GCVE-0-2026-72223)
Vulnerability from cvelistv5
Published
2026-08-15 05:54
Modified
2026-08-17 05:10
Severity ?
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 ]
Impacted products
Vendor Product Version
Linux Linux Version: 5212e11fde4d40fa627668b4f2222d20db488f71
Version: 5212e11fde4d40fa627668b4f2222d20db488f71
Version: 5212e11fde4d40fa627668b4f2222d20db488f71
Version: 5212e11fde4d40fa627668b4f2222d20db488f71
Version: 5212e11fde4d40fa627668b4f2222d20db488f71
Version: 5212e11fde4d40fa627668b4f2222d20db488f71
Version: 5212e11fde4d40fa627668b4f2222d20db488f71
Version: 5212e11fde4d40fa627668b4f2222d20db488f71
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvdimm/btt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
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            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.261",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
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                  "versionEndExcluding": "7.2",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "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 ]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:10:38.658Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2d0364937550a7b3e2592629c2a68753ac020b28"
        },
        {
          "url": "https://git.kernel.org/stable/c/eeb95774bc79268e2b78ebf01d8781560b5bd671"
        },
        {
          "url": "https://git.kernel.org/stable/c/7563f69caa9143a491d5f26e563255c734751545"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b0d9404951aacc9717aa61e77af4a6e9e8f8249"
        },
        {
          "url": "https://git.kernel.org/stable/c/873ced7f345e99f7ee16f9ff226515580332ecc4"
        },
        {
          "url": "https://git.kernel.org/stable/c/30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba59b96d8d21dc8729fca44a022ca5919c1848c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/13fe4cd9ddd0aacb7777812328be525a11ea3fea"
        }
      ],
      "title": "nvdimm/btt: Free arena sub-allocations on discover_arenas() error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72223",
    "datePublished": "2026-08-15T05:54:16.019Z",
    "dateReserved": "2026-08-09T03:40:39.913Z",
    "dateUpdated": "2026-08-17T05:10:38.658Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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