CVE-2025-40035 (GCVE-0-2025-40035)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2026-05-11 21:41
VLAI
Title
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak Struct ff_effect_compat is embedded twice inside uinput_ff_upload_compat, contains internal padding. In particular, there is a hole after struct ff_replay to satisfy alignment requirements for the following union member. Without clearing the structure, copy_to_user() may leak stack data to userspace. Initialize ff_up_compat to zero before filling valid fields.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < 1b317796013f666ae5040edbf0f230ec61496d42 (git)
Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < 877172b97786ed1678640dff0b2d35abb328844c (git)
Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < e63aade22a33e77b93c98c9f02db504d897a76b4 (git)
Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < 933b87c4590b42500299f00ff55f555903056803 (git)
Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < fd8a23ecbc602d00e47b27f20b07350867d0ebe5 (git)
Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < 48c96b7e9e03516936d6deba54b5553097eae817 (git)
Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < f5e1f3b85aadce74268c46676772c3e9fa79897e (git)
Affected: 2d56f3a32c0e62f99c043d2579840f9731fe5855 , < d3366a04770eea807f2826cbdb96934dd8c9bf79 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.29
Unaffected: 0 , < 2.6.29 (semver)
Unaffected: 5.4.301 , ≤ 5.4.* (semver)
Unaffected: 5.10.246 , ≤ 5.10.* (semver)
Unaffected: 5.15.195 , ≤ 5.15.* (semver)
Unaffected: 6.1.156 , ≤ 6.1.* (semver)
Unaffected: 6.6.112 , ≤ 6.6.* (semver)
Unaffected: 6.12.53 , ≤ 6.12.* (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak\n\nStruct ff_effect_compat is embedded twice inside\nuinput_ff_upload_compat, contains internal padding. In particular, there\nis a hole after struct ff_replay to satisfy alignment requirements for\nthe following union member. Without clearing the structure,\ncopy_to_user() may leak stack data to userspace.\n\nInitialize ff_up_compat to zero before filling valid fields."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:41:13.342Z",
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    "dateReserved": "2025-04-16T07:20:57.153Z",
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    "state": "PUBLISHED"
  },
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      "title": "Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak",
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          }
        ],
        "id": "CVE-2025-40035",
        "lastModified": "2026-10-19T21:10:00.160",
        "metrics": {},
        "published": "2025-10-28T12:15:37.363",
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        "vulnStatus": "Deferred"
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      "current_release_date": "2026-06-30T10:27:49+00:00",
      "cve": "CVE-2025-40035",
      "id": "CVE-2025-40035",
      "initial_release_date": "2025-10-28T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40035.json",
      "version": "3"
    }
  }
}



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