CVE-2026-93081 (GCVE-0-2026-93081)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-10-30 12:35
VLAI
Title
firmware: arm_scmi: Fix SCMI device destroy lifetimes
Summary
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix SCMI device destroy lifetimes scmi_child_dev_find() drops the reference returned by device_find_child() before returning the scmi_device pointer. A concurrent unregister can then release the device while the destroy path is still using the returned pointer. Make the lookup helper return the device_find_child() reference and keep it until scmi_device_destroy() has finished unregistering the child. Also split device_unregister() in __scmi_device_destroy() so the SCMI bus ID is not made reusable until after device_del() has removed the old scmi_dev.N name from sysfs. This avoids a new SCMI device reusing the same ID while the old device is still registered. The final device release callback is also a possible cleanup path when SCMI children are deleted by driver core recursion rather than __scmi_device_destroy(). Release the SCMI bus ID from a common helper used by destroy, register-failure and final-release paths, and clear scmi_dev->id after freeing it so the final release cannot free the same ID again.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6773 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ff4273d47da81b95ed9396110bcbd1b7b7470fe8 , < afe5c022a180e0ade394d3fffbafc1a701f50993 (git)
Affected: 2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3 , < d8ecdceeb90cd2c265b222a7b65487faf68fea73 (git)
Affected: 969d8beaa2e374387bf9aa5602ef84fc50bb48d8 , < 916e27f71a80f6d77c48d1a1a5782d6d5ef9017c (git)
Affected: 9ca67840c0ddf3f39407339624cef824a4f27599 , < a60bc2df2d323cc1342f0cf95563cae266801e20 (git)
Affected: 9ca67840c0ddf3f39407339624cef824a4f27599 , < c59b3393df1348a12308aaabd5fbc58ed6b21cf5 (git)
Affected: 9ca67840c0ddf3f39407339624cef824a4f27599 , < 6abe8fe36b29ff51d1a42c2f338972883f4751a5 (git)
Affected: 91ff1e9652fb9beb0174267d6bb38243dff211bb (git)
Affected: 8a8a3547d5c4960da053df49c75bf623827a25da (git)
Affected: 6.1.138 , < 6.1.191 (semver)
Affected: 6.6.90 , < 6.6.160 (semver)
Affected: 6.12.28 , < 6.12.114 (semver)
Affected: 5.15.182 , < 5.16 (semver)
Affected: 6.14.6 , < 6.15 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.114 , ≤ 6.12.* (semver)
Unaffected: 6.18.57 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "cve": "CVE-2026-93081",
      "id": "CVE-2026-93081",
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      "product_status:known_not_affected": "277",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: firmware: arm_scmi: Fix SCMI device destroy lifetimes",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93081.json",
      "version": "3"
    },
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      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-20T00:28:24Z",
      "cve": "CVE-2026-93081",
      "id": "CVE-2026-93081",
      "initial_release_date": "2026-09-18T00:12:29Z",
      "product_status:known_affected": "109",
      "product_status:known_not_affected": "239",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93081",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-93081.json",
      "version": "8"
    }
  }
}



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Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.