Vulnerability-Lookup

GHSA-CQW6-FRJH-G7F6

Vulnerability from github – Published: 2026-10-18 18:32 – Updated: 2026-10-18 18:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98834"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:37Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-cqw6-frjh-g7f6",
  "modified": "2026-10-18T18:32:05Z",
  "published": "2026-10-18T18:32:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98834"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26300879cd8e4612dce66bb8f6ff7cd35fcf3e59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cecf007418b93a2cbc94269e07fe2fb28f54d8fb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-10-18 15:49 – Updated: 2026-10-19 09:26

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

2 references

URL	Tags
https://git.kernel.org/stable/c/cecf007418b93a2cb…
https://git.kernel.org/stable/c/26300879cd8e4612d…

Impacted products

2 products

Vendor	Product	Version
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)
Linux	Linux	Affected: 6.4 Unaffected: 0 , < 6.4 (semver) Unaffected: 7.2.10 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
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        {
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          "programFiles": [
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    "dateReserved": "2026-09-25T10:25:14.372Z",
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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.

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