CVE-2026-98834 (GCVE-0-2026-98834)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:49 – Updated: 2026-10-19 09:26
VLAI
Title
mtd: core: avoid double-free of OTP NVMEM device
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: core: avoid double-free of OTP NVMEM device If factory OTP setup fails after the user OTP NVMEM device has been registered, mtd_otp_nvmem_add() unregisters the user device but leaves mtd->otp_user_nvmem set. On an error, the caller unregisters it again. For -EOPNOTSUPP, registration continues and normal teardown unregisters it again. Clear mtd->otp_user_nvmem after unregistering it.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9 , < cecf007418b93a2cbc94269e07fe2fb28f54d8fb (git)
Affected: e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9 , < 26300879cd8e4612dce66bb8f6ff7cd35fcf3e59 (git)
Affected: 6d1af517817a760d7af3dee0fc4603645485495c (git)
Affected: f1b4affca1e13706ca2eb075bf6775421236d7d1 (git)
Affected: 949476b8601bde5459048eebdf457c9db20addd8 (git)
Affected: dd6c85f98ff33b009b819090268cbf679dc208b9 (git)
Affected: 5.15.111 , < 5.16 (semver)
Affected: 6.1.28 , < 6.2 (semver)
Affected: 6.2.15 , < 6.3 (semver)
Affected: 6.3.2 , < 6.4 (semver)
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Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 7.2.10 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/mtd/mtdcore.c"
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            {
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              "version": "6d1af517817a760d7af3dee0fc4603645485495c",
              "versionType": "git"
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              "versionType": "semver"
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      "cpeApplicability": [
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          "nodes": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: core: avoid double-free of OTP NVMEM device\n\nIf factory OTP setup fails after the user OTP NVMEM device has been\nregistered, mtd_otp_nvmem_add() unregisters the user device but leaves\nmtd-\u003eotp_user_nvmem set. On an error, the caller unregisters it again.\nFor -EOPNOTSUPP, registration continues and normal teardown unregisters\nit again.\n\nClear mtd-\u003eotp_user_nvmem after unregistering it."
        }
      ],
      "providerMetadata": {
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        "shortName": "Linux"
      },
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        },
        {
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    "cveId": "CVE-2026-98834",
    "datePublished": "2026-10-18T15:49:46.003Z",
    "dateReserved": "2026-09-25T10:25:14.372Z",
    "dateUpdated": "2026-10-19T09:26:26.676Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "percentile": "0.04634"
    },
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      "cve": "CVE-2026-98834",
      "id": "msrc_CVE-2026-98834",
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      "product_status:known_affected": "2",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "mtd: core: avoid double-free of OTP NVMEM device",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98834.json",
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    "nvd": {
      "cve": {
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          }
        ],
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        "lastModified": "2026-10-19T10:19:47.420",
        "metrics": {},
        "published": "2026-10-18T16:17:37.633",
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      "title": "kernel: mtd: core: avoid double-free of OTP NVMEM device",
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  }
}



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