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FKIE_CVE-2026-93165

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: platform/chrome: sensorhub: Fix memory overread in ring handler `max_response` and `sensor_num` are read from different EC commands: - `max_response` is from cros_ec_get_proto_info(). ec_dev->max_response = info->max_response_packet_size - sizeof(struct ec_host_response); - `sensor_num` is from cros_ec_get_sensor_count(). sensor_num = cros_ec_get_sensor_count(ec); With a malfunctioning EC firmware, it is possible that the `msg->insize` (i.e., `fifo_info_length` in the context) could be clamped in cros_ec_cmd_xfer() because `msg->insize` is greater than `max_response`. int fifo_info_length = sizeof(struct ec_response_motion_sense_fifo_info) + sizeof(u16) * sensorhub->sensor_num; This means the number of read bytes could be less than expected. As a result, the subsequent memcpy() in cros_ec_sensorhub_ring_handler() overreads the `resp->fifo_info` buffer. Check the return value of cros_ec_cmd_xfer_status() and abort if the number of bytes read does not match the expected length.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6268f46d83875d294d75b68b97a5b79953744598
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7780d93ae28f31fe517417c9451255315d1ad584
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e901aaf95828364b05a2120a1bea1a1669bdc9a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/847a5ba0ac75f609e3f88da905251f7a76179145
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/86bcfab7dff6f0a61cbe0660e5176e907353141b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/98604cc8fd2578442f49cd113481e8fc83bc0ad3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1ceb2b2324717fa30b44d56ef0c52813e239569
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee0403520cdbcf87e853df9aaa9b518a0684ed38
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/chrome/cros_ec_sensorhub_ring.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "98604cc8fd2578442f49cd113481e8fc83bc0ad3",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            },
            {
              "lessThan": "86bcfab7dff6f0a61cbe0660e5176e907353141b",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            },
            {
              "lessThan": "7e901aaf95828364b05a2120a1bea1a1669bdc9a",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            },
            {
              "lessThan": "7780d93ae28f31fe517417c9451255315d1ad584",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            },
            {
              "lessThan": "ee0403520cdbcf87e853df9aaa9b518a0684ed38",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            },
            {
              "lessThan": "847a5ba0ac75f609e3f88da905251f7a76179145",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            },
            {
              "lessThan": "6268f46d83875d294d75b68b97a5b79953744598",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            },
            {
              "lessThan": "d1ceb2b2324717fa30b44d56ef0c52813e239569",
              "status": "affected",
              "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/chrome/cros_ec_sensorhub_ring.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/chrome: sensorhub: Fix memory overread in ring handler\n\n`max_response` and `sensor_num` are read from different EC commands:\n\n- `max_response` is from cros_ec_get_proto_info().\n    ec_dev-\u003emax_response = info-\u003emax_response_packet_size -\n                                    sizeof(struct ec_host_response);\n\n- `sensor_num` is from cros_ec_get_sensor_count().\n    sensor_num = cros_ec_get_sensor_count(ec);\n\nWith a malfunctioning EC firmware, it is possible that the `msg-\u003einsize`\n(i.e., `fifo_info_length` in the context) could be clamped in\ncros_ec_cmd_xfer() because `msg-\u003einsize` is greater than `max_response`.\n\n    int fifo_info_length =\n            sizeof(struct ec_response_motion_sense_fifo_info) +\n            sizeof(u16) * sensorhub-\u003esensor_num;\n\nThis means the number of read bytes could be less than expected.  As a\nresult, the subsequent memcpy() in cros_ec_sensorhub_ring_handler()\noverreads the `resp-\u003efifo_info` buffer.\n\nCheck the return value of cros_ec_cmd_xfer_status() and abort if the\nnumber of bytes read does not match the expected length."
    }
  ],
  "id": "CVE-2026-93165",
  "lastModified": "2026-09-17T17:18:12.017",
  "metrics": {},
  "published": "2026-09-17T17:18:12.017",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6268f46d83875d294d75b68b97a5b79953744598"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7780d93ae28f31fe517417c9451255315d1ad584"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7e901aaf95828364b05a2120a1bea1a1669bdc9a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/847a5ba0ac75f609e3f88da905251f7a76179145"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/86bcfab7dff6f0a61cbe0660e5176e907353141b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/98604cc8fd2578442f49cd113481e8fc83bc0ad3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d1ceb2b2324717fa30b44d56ef0c52813e239569"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ee0403520cdbcf87e853df9aaa9b518a0684ed38"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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