Vulnerability-Lookup

FKIE_CVE-2026-93082

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unwind P2A receiver mailbox setup failure mailbox_chan_setup() can request an additional P2A receiver channel after successfully acquiring the primary P2A channel. If that later request fails, the function returns immediately and leaves the primary channel allocated. Unwind the primary mailbox channel before returning the error so probe deferral or other setup failures do not leave the channel busy for later probe attempts.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/transports/mailbox.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4c2a5d72357e5c6743c23b59615da287140d9d31",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            },
            {
              "lessThan": "3b0b02134ab90202af80b102fa37196b9689e86f",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            },
            {
              "lessThan": "3515aed7fe424b79c49ff9cd51f7802a64a4ab7b",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            },
            {
              "lessThan": "f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/transports/mailbox.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind P2A receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional P2A receiver channel after\nsuccessfully acquiring the primary P2A channel. If that later request\nfails, the function returns immediately and leaves the primary channel\nallocated.\n\nUnwind the primary mailbox channel before returning the error so probe\ndeferral or other setup failures do not leave the channel busy for later\nprobe attempts."
    }
  ],
  "id": "CVE-2026-93082",
  "lastModified": "2026-09-17T17:18:02.193",
  "metrics": {},
  "published": "2026-09-17T17:18:02.193",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-93082 (GCVE-0-2026-93082)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11

Title

firmware: arm_scmi: Unwind P2A receiver mailbox setup failure

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/4c2a5d72357e5c674…
https://git.kernel.org/stable/c/3b0b02134ab90202a…
https://git.kernel.org/stable/c/3515aed7fe424b79c…
https://git.kernel.org/stable/c/f3e3773c4e5e96549…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 , < 4c2a5d72357e5c6743c23b59615da287140d9d31 (git) Affected: fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 , < 3b0b02134ab90202af80b102fa37196b9689e86f (git) Affected: fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 , < 3515aed7fe424b79c49ff9cd51f7802a64a4ab7b (git) Affected: fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 , < f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d (git)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/transports/mailbox.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4c2a5d72357e5c6743c23b59615da287140d9d31",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            },
            {
              "lessThan": "3b0b02134ab90202af80b102fa37196b9689e86f",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            },
            {
              "lessThan": "3515aed7fe424b79c49ff9cd51f7802a64a4ab7b",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            },
            {
              "lessThan": "f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d",
              "status": "affected",
              "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/transports/mailbox.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind P2A receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional P2A receiver channel after\nsuccessfully acquiring the primary P2A channel. If that later request\nfails, the function returns immediately and leaves the primary channel\nallocated.\n\nUnwind the primary mailbox channel before returning the error so probe\ndeferral or other setup failures do not leave the channel busy for later\nprobe attempts."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:11:02.339Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31"
        },
        {
          "url": "https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f"
        },
        {
          "url": "https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d"
        }
      ],
      "title": "firmware: arm_scmi: Unwind P2A receiver mailbox setup failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93082",
    "datePublished": "2026-09-17T16:11:02.339Z",
    "dateReserved": "2026-09-17T15:57:05.662Z",
    "dateUpdated": "2026-09-17T16:11:02.339Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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