github - ghsa-q7v5-hrgw-5gjh

ghsa-q7v5-hrgw-5gjh

Vulnerability from github

Published

2025-09-05 18:31

Modified

2025-09-05 18:31

Details

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

io_uring/futex: ensure io_futex_wait() cleans up properly on failure

The io_futex_data is allocated upfront and assigned to the io_kiocb async_data field, but the request isn't marked with REQ_F_ASYNC_DATA at that point. Those two should always go together, as the flag tells io_uring whether the field is valid or not.

Additionally, on failure cleanup, the futex handler frees the data but does not clear ->async_data. Clear the data and the flag in the error path as well.

Thanks to Trend Micro Zero Day Initiative and particularly ReDress for reporting this.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-39698"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-05T18:15:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/futex: ensure io_futex_wait() cleans up properly on failure\n\nThe io_futex_data is allocated upfront and assigned to the io_kiocb\nasync_data field, but the request isn\u0027t marked with REQ_F_ASYNC_DATA\nat that point. Those two should always go together, as the flag tells\nio_uring whether the field is valid or not.\n\nAdditionally, on failure cleanup, the futex handler frees the data but\ndoes not clear -\u003easync_data. Clear the data and the flag in the error\npath as well.\n\nThanks to Trend Micro Zero Day Initiative and particularly ReDress for\nreporting this.",
  "id": "GHSA-q7v5-hrgw-5gjh",
  "modified": "2025-09-05T18:31:27Z",
  "published": "2025-09-05T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39698"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/508c1314b342b78591f51c4b5dadee31a88335df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d34c04152df517c59979b4bf2a47f491e06d3256"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9f93172820a53ab42c4b0e5e65291f4f9d00ad2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-39698 (GCVE-0-2025-39698)

Vulnerability from cvelistv5

Published

2025-09-05 17:21

Modified

2025-09-29 05:57

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/futex: ensure io_futex_wait() cleans up properly on failure The io_futex_data is allocated upfront and assigned to the io_kiocb async_data field, but the request isn't marked with REQ_F_ASYNC_DATA at that point. Those two should always go together, as the flag tells io_uring whether the field is valid or not. Additionally, on failure cleanup, the futex handler frees the data but does not clear ->async_data. Clear the data and the flag in the error path as well. Thanks to Trend Micro Zero Day Initiative and particularly ReDress for reporting this.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/d9f93172820a53ab42c4b0e5e65291f4f9d00ad2
	https://git.kernel.org/stable/c/d34c04152df517c59979b4bf2a47f491e06d3256
	https://git.kernel.org/stable/c/508c1314b342b78591f51c4b5dadee31a88335df

Impacted products

Vendor

Product

Version

▼

Linux

Version: 194bb58c6090e39bd7d9b9c888a079213628e1f6
Version: 194bb58c6090e39bd7d9b9c888a079213628e1f6
Version: 194bb58c6090e39bd7d9b9c888a079213628e1f6

Linux

Version: 6.7

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-39698",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-25T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-26T03:55:12.641Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/futex.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d9f93172820a53ab42c4b0e5e65291f4f9d00ad2",
              "status": "affected",
              "version": "194bb58c6090e39bd7d9b9c888a079213628e1f6",
              "versionType": "git"
            },
            {
              "lessThan": "d34c04152df517c59979b4bf2a47f491e06d3256",
              "status": "affected",
              "version": "194bb58c6090e39bd7d9b9c888a079213628e1f6",
              "versionType": "git"
            },
            {
              "lessThan": "508c1314b342b78591f51c4b5dadee31a88335df",
              "status": "affected",
              "version": "194bb58c6090e39bd7d9b9c888a079213628e1f6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/futex.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.44",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.4",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/futex: ensure io_futex_wait() cleans up properly on failure\n\nThe io_futex_data is allocated upfront and assigned to the io_kiocb\nasync_data field, but the request isn\u0027t marked with REQ_F_ASYNC_DATA\nat that point. Those two should always go together, as the flag tells\nio_uring whether the field is valid or not.\n\nAdditionally, on failure cleanup, the futex handler frees the data but\ndoes not clear -\u003easync_data. Clear the data and the flag in the error\npath as well.\n\nThanks to Trend Micro Zero Day Initiative and particularly ReDress for\nreporting this."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:57:38.943Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d9f93172820a53ab42c4b0e5e65291f4f9d00ad2"
        },
        {
          "url": "https://git.kernel.org/stable/c/d34c04152df517c59979b4bf2a47f491e06d3256"
        },
        {
          "url": "https://git.kernel.org/stable/c/508c1314b342b78591f51c4b5dadee31a88335df"
        }
      ],
      "title": "io_uring/futex: ensure io_futex_wait() cleans up properly on failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39698",
    "datePublished": "2025-09-05T17:21:04.360Z",
    "dateReserved": "2025-04-16T07:20:57.115Z",
    "dateUpdated": "2025-09-29T05:57:38.943Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted