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CVE-2026-93080 (GCVE-0-2026-93080)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11
VLAI
Title
firmware: arm_scmi: Fix transport device teardown lookup
Summary
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix transport device teardown lookup SCMI transport devices are deliberately excluded from normal SCMI bus matching so protocol drivers cannot bind to the internal transport children. However, scmi_device_destroy() uses the same protocol/name lookup to find devices that must be unregistered during channel teardown. Split the match helper so driver matching still skips transport devices, while explicit child lookup can find them for teardown. Use a shared transport-device name prefix macro for both matching and name generation. Since transport-device names are derived from direction and protocol ID, reject duplicate protocol channel setup before creating or finding a transport device. This prevents malformed firmware with duplicate protocol child nodes from reusing an existing transport device and then destroying it when the duplicate IDR insertion fails.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9593804c44c24545e1b0496786dcb765d7b0e193 , < c656427440ea627166394d00c4b72147d5d79c60 (git)
Affected: 9593804c44c24545e1b0496786dcb765d7b0e193 , < 4635953b4c1af477e166073521a77de6279f6929 (git)
Affected: 9593804c44c24545e1b0496786dcb765d7b0e193 , < a14dd8fe0a95db638c550ed984cfe2a7428c783d (git)
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Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/bus.c",
            "drivers/firmware/arm_scmi/common.h",
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          "vendor": "Linux",
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix transport device teardown lookup\n\nSCMI transport devices are deliberately excluded from normal SCMI bus\nmatching so protocol drivers cannot bind to the internal transport\nchildren. However, scmi_device_destroy() uses the same protocol/name\nlookup to find devices that must be unregistered during channel teardown.\n\nSplit the match helper so driver matching still skips transport devices,\nwhile explicit child lookup can find them for teardown. Use a shared\ntransport-device name prefix macro for both matching and name generation.\n\nSince transport-device names are derived from direction and protocol ID,\nreject duplicate protocol channel setup before creating or finding a\ntransport device. This prevents malformed firmware with duplicate\nprotocol child nodes from reusing an existing transport device and then\ndestroying it when the duplicate IDR insertion fails."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:11:01.005Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/c656427440ea627166394d00c4b72147d5d79c60"
        },
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          "url": "https://git.kernel.org/stable/c/4635953b4c1af477e166073521a77de6279f6929"
        },
        {
          "url": "https://git.kernel.org/stable/c/a14dd8fe0a95db638c550ed984cfe2a7428c783d"
        }
      ],
      "title": "firmware: arm_scmi: Fix transport device teardown lookup",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93080",
    "datePublished": "2026-09-17T16:11:01.005Z",
    "dateReserved": "2026-09-17T15:57:05.662Z",
    "dateUpdated": "2026-09-17T16:11:01.005Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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                "product": "Linux",
                "programFiles": [
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                  "drivers/firmware/arm_scmi/common.h",
                  "drivers/firmware/arm_scmi/driver.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                "versions": [
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                    "versionType": "semver"
                  },
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                    "versionType": "semver"
                  },
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                    "status": "unaffected",
                    "version": "7.2.6",
                    "versionType": "semver"
                  },
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                    "status": "unaffected",
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                  }
                ]
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            ],
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix transport device teardown lookup\n\nSCMI transport devices are deliberately excluded from normal SCMI bus\nmatching so protocol drivers cannot bind to the internal transport\nchildren. However, scmi_device_destroy() uses the same protocol/name\nlookup to find devices that must be unregistered during channel teardown.\n\nSplit the match helper so driver matching still skips transport devices,\nwhile explicit child lookup can find them for teardown. Use a shared\ntransport-device name prefix macro for both matching and name generation.\n\nSince transport-device names are derived from direction and protocol ID,\nreject duplicate protocol channel setup before creating or finding a\ntransport device. This prevents malformed firmware with duplicate\nprotocol child nodes from reusing an existing transport device and then\ndestroying it when the duplicate IDR insertion fails."
          }
        ],
        "id": "CVE-2026-93080",
        "lastModified": "2026-09-17T17:18:01.950",
        "metrics": {},
        "published": "2026-09-17T17:18:01.950",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-18T00:12:31Z",
      "cve": "CVE-2026-93080",
      "id": "CVE-2026-93080",
      "initial_release_date": "2026-09-18T00:12:31Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93080",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93080.json",
      "version": "2"
    }
  }
}



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