CVE-2026-63966 (GCVE-0-2026-63966)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-07-19 14:55
VLAI
Title
iio: imu: adis16550: fix stack leak in trigger handler
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: imu: adis16550: fix stack leak in trigger handler adis16550_trigger_handler() declares the scan data array on the stack without initializing it. The memcpy() at the bottom fills only the first 28 bytes (TEMP + 6 channels of GYRO/ACCEL data), and iio_push_to_buffers_with_timestamp() writes the s64 timestamp at the 8-byte-aligned offset 32. Bytes 28-31 remain uninitialized stack data which leaks to userspace on ever trigger. Fix this all by just zero-initializing the structure on the stack.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e4570f4bb231f01e32d44fd38841665f340d6914 , < ce582b22dd2ff15ac99101c22ec1559d1febe2ff (git)
Affected: e4570f4bb231f01e32d44fd38841665f340d6914 , < c2c255444392872cbbf46d640cb3a938e8000309 (git)
Affected: e4570f4bb231f01e32d44fd38841665f340d6914 , < 474f8928d50b09f7dcf507049f08732640b88b49 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.35 , ≤ 6.18.* (semver)
Unaffected: 7.0.12 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: imu: adis16550: fix stack leak in trigger handler\n\nadis16550_trigger_handler() declares the scan data array on the stack\nwithout initializing it.  The memcpy() at the bottom fills only the\nfirst 28 bytes (TEMP + 6 channels of GYRO/ACCEL data), and\niio_push_to_buffers_with_timestamp() writes the s64 timestamp at the\n8-byte-aligned offset 32.  Bytes 28-31 remain uninitialized stack data\nwhich leaks to userspace on ever trigger.\n\nFix this all by just zero-initializing the structure on the stack."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:55:54.391Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/c2c255444392872cbbf46d640cb3a938e8000309"
        },
        {
          "url": "https://git.kernel.org/stable/c/474f8928d50b09f7dcf507049f08732640b88b49"
        }
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      "title": "iio: imu: adis16550: fix stack leak in trigger handler",
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    "datePublished": "2026-07-19T14:55:54.391Z",
    "dateReserved": "2026-07-19T07:54:57.024Z",
    "dateUpdated": "2026-07-19T14:55:54.391Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-21T11:46:30+00:00",
      "cve": "CVE-2026-63966",
      "id": "CVE-2026-63966",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iio: imu: adis16550: fix stack leak in trigger handler",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63966.json",
      "version": "3"
    }
  }
}



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