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GHSA-G7GF-5V23-7WC5

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-18 18:31

Details

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

nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()

Unlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls nvme_cmd_allowed(). Unprivileged callers can thus issue I/O on a partition device or write through a read-only file descriptor.

Pass flags and open_for_write through and reject disallowed commands with -EACCES.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90227"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:18Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()\n\nUnlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls\nnvme_cmd_allowed(). Unprivileged callers can thus issue I/O on a\npartition device or write through a read-only file descriptor.\n\nPass flags and open_for_write through and reject disallowed commands\nwith -EACCES.",
  "id": "GHSA-g7gf-5v23-7wc5",
  "modified": "2026-09-18T18:31:28Z",
  "published": "2026-09-17T18:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90227"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/736b7c6adc7a65c4411beff197b6a634f7a6ca27"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95b0591d51dbf9e618d7845883d535e88ad7c8af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b116e9dae433ff631f94c36c61a7a78fe400ed1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b53d495c7f0db46b6748b5ade48371a10dd5d3bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c35cd98eed1a863e8dd51073953563cd8c907f68"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-90227 (GCVE-0-2026-90227)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:07 – Updated: 2026-09-18 17:53

Title

nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()

Summary

In the Linux kernel, the following vulnerability has been resolved: nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed() Unlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls nvme_cmd_allowed(). Unprivileged callers can thus issue I/O on a partition device or write through a read-only file descriptor. Pass flags and open_for_write through and reject disallowed commands with -EACCES.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/c35cd98eed1a863e8…
https://git.kernel.org/stable/c/95b0591d51dbf9e61…
https://git.kernel.org/stable/c/736b7c6adc7a65c44…
https://git.kernel.org/stable/c/b116e9dae433ff631…
https://git.kernel.org/stable/c/b53d495c7f0db46b6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a53295b6998f62d961c29e54051c1cf1d738c2b3 , < c35cd98eed1a863e8dd51073953563cd8c907f68 (git) Affected: a53295b6998f62d961c29e54051c1cf1d738c2b3 , < 95b0591d51dbf9e618d7845883d535e88ad7c8af (git) Affected: a53295b6998f62d961c29e54051c1cf1d738c2b3 , < 736b7c6adc7a65c4411beff197b6a634f7a6ca27 (git) Affected: a53295b6998f62d961c29e54051c1cf1d738c2b3 , < b116e9dae433ff631f94c36c61a7a78fe400ed1e (git) Affected: a53295b6998f62d961c29e54051c1cf1d738c2b3 , < b53d495c7f0db46b6748b5ade48371a10dd5d3bc (git)
Linux	Linux	Affected: 3.3 Unaffected: 0 , < 3.3 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (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

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/ioctl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c35cd98eed1a863e8dd51073953563cd8c907f68",
              "status": "affected",
              "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3",
              "versionType": "git"
            },
            {
              "lessThan": "95b0591d51dbf9e618d7845883d535e88ad7c8af",
              "status": "affected",
              "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3",
              "versionType": "git"
            },
            {
              "lessThan": "736b7c6adc7a65c4411beff197b6a634f7a6ca27",
              "status": "affected",
              "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3",
              "versionType": "git"
            },
            {
              "lessThan": "b116e9dae433ff631f94c36c61a7a78fe400ed1e",
              "status": "affected",
              "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3",
              "versionType": "git"
            },
            {
              "lessThan": "b53d495c7f0db46b6748b5ade48371a10dd5d3bc",
              "status": "affected",
              "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/ioctl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.3"
            },
            {
              "lessThan": "3.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "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": "6.6.157",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()\n\nUnlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls\nnvme_cmd_allowed(). Unprivileged callers can thus issue I/O on a\npartition device or write through a read-only file descriptor.\n\nPass flags and open_for_write through and reject disallowed commands\nwith -EACCES."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Attacker-controlled opcode/slba/nblocks enter via copy_from_user of struct nvme_user_io in nvme_submit_io(), reached only through ioctl(NVME_IOCTL_SUBMIT_IO) on an NVMe block or ng* char node (blkdev_ioctl \u2192 nvme_ioctl / nvme_ns_chr_ioctl \u2192 nvme_ns_ioctl). No remote protocol carries that payload.\nAC:L - nvme_submit_io() copies the user nvme_user_io, accepts nvme_cmd_read/write/compare, and submits with the caller-chosen io.slba; there is no race or layout dependency, so the same ioctl reliably performs the I/O.\nPR:L - nvme_open()/nvme_ns_chr_open() impose no capability check, and the vulnerable nvme_submit_io() path never called nvme_cmd_allowed(), the only CAP_SYS_ADMIN gate for partition and read-only-fd I/O. An unprivileged user who can open a partition or O_RDONLY NVMe node can issue the ioctl.\nUI:N - The attacker opens the NVMe node they already control and issues NVME_IOCTL_SUBMIT_IO themselves; no other user must mount media, pass a file, or otherwise act.\nS:U - Skipping nvme_cmd_allowed() lets the caller read and write other LBAs of the same NVMe namespace in the host kernel. That is intra-OS partition/fd-mode bypass, not a VM, IOMMU, or guest-to-host boundary crossing.\nC:H - On a partition bdev, nvme_ioctl() still uses bdev-\u003ebd_disk-\u003eprivate_data (the whole namespace) and nvme_submit_io() programs c.rw.slba from attacker io.slba without adding bd_start_sect, so nvme_cmd_read returns arbitrary namespace LBAs including other partitions.\nI:H - The same path accepts io.opcode=nvme_cmd_write and, because nvme_cmd_allowed() is not called, ignores NVME_IOCTL_PARTITION and !open_for_write, so the attacker can persist writes to any namespace LBA from a partition fd or an O_RDONLY descriptor.\nA:H - Those unscoped nvme_cmd_write commands can overwrite other partitions\u0027 metadata, swap, or the OS image on the same namespace, persistently denying use of the host or co-tenant volumes (the failure mode nvme_cmd_allowed() exists to prevent)."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-18T17:53:53.677Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c35cd98eed1a863e8dd51073953563cd8c907f68"
        },
        {
          "url": "https://git.kernel.org/stable/c/95b0591d51dbf9e618d7845883d535e88ad7c8af"
        },
        {
          "url": "https://git.kernel.org/stable/c/736b7c6adc7a65c4411beff197b6a634f7a6ca27"
        },
        {
          "url": "https://git.kernel.org/stable/c/b116e9dae433ff631f94c36c61a7a78fe400ed1e"
        },
        {
          "url": "https://git.kernel.org/stable/c/b53d495c7f0db46b6748b5ade48371a10dd5d3bc"
        }
      ],
      "title": "nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90227",
    "datePublished": "2026-09-17T16:07:35.989Z",
    "dateReserved": "2026-09-11T19:38:34.794Z",
    "dateUpdated": "2026-09-18T17:53:53.677Z",
    "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.

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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GHSA-G7GF-5V23-7WC5

CVE-2026-90227 (GCVE-0-2026-90227)

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