Vulnerability-Lookup

CVE-2026-93083 (GCVE-0-2026-93083)

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

Title

firmware: arm_scmi: Unwind TX receiver mailbox setup failure

Summary

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unwind TX receiver mailbox setup failure mailbox_chan_setup() can request an additional unidirectional TX receiver channel after successfully acquiring the primary channel. If that second 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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/babb017cf5e4600c9…
https://git.kernel.org/stable/c/717b8e972a667fc1b…
https://git.kernel.org/stable/c/9958f55eace8b4371…
https://git.kernel.org/stable/c/6f7c06744d53dc8e0…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 , < babb017cf5e4600c94c23ea87175a0380235a3ee (git) Affected: 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 , < 717b8e972a667fc1bebe63cbcf0d58e692cbb491 (git) Affected: 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 , < 9958f55eace8b43713c9fc54dcf90e7cdefee413 (git) Affected: 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 , < 6f7c06744d53dc8e047725d411d7f915d9ec35ae (git)	guessed
Linux	Linux	Affected: 6.4 Unaffected: 0 , < 6.4 (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)	guessed

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": "babb017cf5e4600c94c23ea87175a0380235a3ee",
              "status": "affected",
              "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
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              "versionType": "git"
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
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              "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": "6.4",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.4",
                  "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 TX receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional unidirectional TX\nreceiver channel after successfully acquiring the primary channel. If\nthat second request fails, the function returns immediately and leaves\nthe primary channel allocated.\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": "2026-09-17T16:11:02.997Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491"
        },
        {
          "url": "https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413"
        },
        {
          "url": "https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae"
        }
      ],
      "title": "firmware: arm_scmi: Unwind TX receiver mailbox setup failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93083",
    "datePublished": "2026-09-17T16:11:02.997Z",
    "dateReserved": "2026-09-17T15:57:05.662Z",
    "dateUpdated": "2026-09-17T16:11:02.997Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "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": "babb017cf5e4600c94c23ea87175a0380235a3ee",
                    "status": "affected",
                    "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "717b8e972a667fc1bebe63cbcf0d58e692cbb491",
                    "status": "affected",
                    "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
                    "versionType": "git"
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                  {
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                    "versionType": "git"
                  },
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                    "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/firmware/arm_scmi/transports/mailbox.c"
                ],
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                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.4"
                  },
                  {
                    "lessThan": "6.4",
                    "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 TX receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional unidirectional TX\nreceiver channel after successfully acquiring the primary channel. If\nthat second request fails, the function returns immediately and leaves\nthe primary channel allocated.\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-2026-93083",
        "lastModified": "2026-09-17T17:18:02.337",
        "metrics": {},
        "published": "2026-09-17T17:18:02.337",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}

FKIE_CVE-2026-93083

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

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee

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": "babb017cf5e4600c94c23ea87175a0380235a3ee",
              "status": "affected",
              "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
              "versionType": "git"
            },
            {
              "lessThan": "717b8e972a667fc1bebe63cbcf0d58e692cbb491",
              "status": "affected",
              "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
              "versionType": "git"
            },
            {
              "lessThan": "9958f55eace8b43713c9fc54dcf90e7cdefee413",
              "status": "affected",
              "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
              "versionType": "git"
            },
            {
              "lessThan": "6f7c06744d53dc8e047725d411d7f915d9ec35ae",
              "status": "affected",
              "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
              "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": "6.4"
            },
            {
              "lessThan": "6.4",
              "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 TX receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional unidirectional TX\nreceiver channel after successfully acquiring the primary channel. If\nthat second request fails, the function returns immediately and leaves\nthe primary channel allocated.\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-2026-93083",
  "lastModified": "2026-09-17T17:18:02.337",
  "metrics": {},
  "published": "2026-09-17T17:18:02.337",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-FP4R-FJ2Q-PJ98

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_scmi: Unwind TX receiver mailbox setup failure

mailbox_chan_setup() can request an additional unidirectional TX receiver channel after successfully acquiring the primary channel. If that second 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.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-93083"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:18:02Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind TX receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional unidirectional TX\nreceiver channel after successfully acquiring the primary channel. If\nthat second request fails, the function returns immediately and leaves\nthe primary channel allocated.\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": "GHSA-fp4r-fj2q-pj98",
  "modified": "2026-09-17T18:32:09Z",
  "published": "2026-09-17T18:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93083"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

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.

Action not permitted

CVE-2026-93083 (GCVE-0-2026-93083)

FKIE_CVE-2026-93083

GHSA-FP4R-FJ2Q-PJ98

Tags

Sightings

Nomenclature

Related by attack behaviour