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GHSA-QQC3-34RP-574R

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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

vduse: return compat ioctl results directly

The compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but then calls the native handler. Their different command sizes make native dispatch return -ENOIOCTLCMD.

For GET_FD, this overwrites receive_fd()'s return value after the descriptor is installed, leaking one fd per call. Return handled compat results directly and use native dispatch only for other commands.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97983"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:26Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvduse: return compat ioctl results directly\n\nThe compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but\nthen calls the native handler. Their different command sizes make native\ndispatch return -ENOIOCTLCMD.\n\nFor GET_FD, this overwrites receive_fd()\u0027s return value after the\ndescriptor is installed, leaking one fd per call. Return handled compat\nresults directly and use native dispatch only for other commands.",
  "id": "GHSA-qqc3-34rp-574r",
  "modified": "2026-09-25T12:31:31Z",
  "published": "2026-09-25T12:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97983"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/135ac58097fa5fc707bf392c5cececf59e4080c0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48a4ee65e677559776349128e6a81a6041986c99"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97983 (GCVE-0-2026-97983)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-09-25 10:23

Title

vduse: return compat ioctl results directly

Summary

In the Linux kernel, the following vulnerability has been resolved: vduse: return compat ioctl results directly The compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but then calls the native handler. Their different command sizes make native dispatch return -ENOIOCTLCMD. For GET_FD, this overwrites receive_fd()'s return value after the descriptor is installed, leaking one fd per call. Return handled compat results directly and use native dispatch only for other commands.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/135ac58097fa5fc70…
https://git.kernel.org/stable/c/48a4ee65e67755977…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 455a2a1af92651764e9eb42cec0d95ac142afc28 , < 135ac58097fa5fc707bf392c5cececf59e4080c0 (git) Affected: 455a2a1af92651764e9eb42cec0d95ac142afc28 , < 48a4ee65e677559776349128e6a81a6041986c99 (git) Affected: 7dd28904c42ee3b0728c0692dd3332c2c83e8f33 (git) Affected: 7.1.5 , < 7.2 (semver)
Linux	Linux	Affected: 7.2 Unaffected: 0 , < 7.2 (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vdpa/vdpa_user/vduse_dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "135ac58097fa5fc707bf392c5cececf59e4080c0",
              "status": "affected",
              "version": "455a2a1af92651764e9eb42cec0d95ac142afc28",
              "versionType": "git"
            },
            {
              "lessThan": "48a4ee65e677559776349128e6a81a6041986c99",
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              "version": "455a2a1af92651764e9eb42cec0d95ac142afc28",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7dd28904c42ee3b0728c0692dd3332c2c83e8f33",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "7.1.5",
              "versionType": "semver"
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          "versions": [
            {
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              "version": "7.2"
            },
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              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
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                  "versionStartIncluding": "7.2",
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                {
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          "url": "https://git.kernel.org/stable/c/48a4ee65e677559776349128e6a81a6041986c99"
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    "datePublished": "2026-09-25T10:23:18.940Z",
    "dateReserved": "2026-09-25T10:18:58.208Z",
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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GHSA-QQC3-34RP-574R

CVE-2026-97983 (GCVE-0-2026-97983)

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