Vulnerability-Lookup

CVE-2026-64260 (GCVE-0-2026-64260)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-25 08:49

Title

fuse-uring: Avoid queue->stopped races and set/read that value under lock

Summary

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue->stopped races and set/read that value under lock There are several readers of queue->stopped that check the value under lock, but fuse_uring_commit_fetch() did not and actually the value was not set under the lock in fuse_uring_abort_end_requests() either. Especially in fuse_uring_commit_fetch it is important to check under a lock, because due to races 'struct fuse_req' might be freed with fuse_request_end, but another thread/cpu might already do teardown work.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/39c8e925b207afcef…
https://git.kernel.org/stable/c/4021a3a79eee551d9…
https://git.kernel.org/stable/c/b70a3aca16934c196…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4a9bfb9b6850fec0685447aed280533cf980de70 , < 39c8e925b207afceffaa5382416ed405e0223a03 (git) Affected: 4a9bfb9b6850fec0685447aed280533cf980de70 , < 4021a3a79eee551d95fe1e1e7c1b195d34ba8c08 (git) Affected: 4a9bfb9b6850fec0685447aed280533cf980de70 , < b70a3aca16934c196f92abb17b01c1647b9bb63c (git)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/fuse/dev_uring.c"
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          "versions": [
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              "status": "affected",
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              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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            }
          ]
        },
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          "versions": [
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              "version": "6.14"
            },
            {
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              "version": "0",
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              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                },
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                },
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                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse-uring: Avoid queue-\u003estopped races and set/read that value under lock\n\nThere are several readers of queue-\u003estopped that check the value\nunder lock, but fuse_uring_commit_fetch() did not and actually\nthe value was not set under the lock in fuse_uring_abort_end_requests()\neither. Especially in fuse_uring_commit_fetch it is important\nto check under a lock, because due to races \u0027struct fuse_req\u0027\nmight be freed with fuse_request_end, but another thread/cpu\nmight already do teardown work."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:49:11.395Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
          "url": "https://git.kernel.org/stable/c/b70a3aca16934c196f92abb17b01c1647b9bb63c"
        }
      ],
      "title": "fuse-uring: Avoid queue-\u003estopped races and set/read that value under lock",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64260",
    "datePublished": "2026-07-25T08:49:11.395Z",
    "dateReserved": "2026-07-19T15:36:31.774Z",
    "dateUpdated": "2026-07-25T08:49:11.395Z",
    "state": "PUBLISHED"
  },
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    },
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:47:07Z",
      "cve": "CVE-2026-64260",
      "id": "CVE-2026-64260",
      "initial_release_date": "2026-07-25T16:47:07Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64260",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64260.json",
      "version": "2"
    }
  }
}

GHSA-985W-MQGJ-6GFR

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

fuse-uring: Avoid queue->stopped races and set/read that value under lock

There are several readers of queue->stopped that check the value under lock, but fuse_uring_commit_fetch() did not and actually the value was not set under the lock in fuse_uring_abort_end_requests() either. Especially in fuse_uring_commit_fetch it is important to check under a lock, because due to races 'struct fuse_req' might be freed with fuse_request_end, but another thread/cpu might already do teardown work.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64260"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:06Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse-uring: Avoid queue-\u003estopped races and set/read that value under lock\n\nThere are several readers of queue-\u003estopped that check the value\nunder lock, but fuse_uring_commit_fetch() did not and actually\nthe value was not set under the lock in fuse_uring_abort_end_requests()\neither. Especially in fuse_uring_commit_fetch it is important\nto check under a lock, because due to races \u0027struct fuse_req\u0027\nmight be freed with fuse_request_end, but another thread/cpu\nmight already do teardown work.",
  "id": "GHSA-985w-mqgj-6gfr",
  "modified": "2026-07-25T12:31:27Z",
  "published": "2026-07-25T12:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64260"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39c8e925b207afceffaa5382416ed405e0223a03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4021a3a79eee551d95fe1e1e7c1b195d34ba8c08"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b70a3aca16934c196f92abb17b01c1647b9bb63c"
    }
  ],
  "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.

Action not permitted

CVE-2026-64260 (GCVE-0-2026-64260)

GHSA-985W-MQGJ-6GFR

Tags

Sightings

Nomenclature