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platform/chrome: sensorhub: Bound the EC-reported sensor number

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: sensorhub: Bound the EC-reported sensor number Each EC FIFO event carries an 8-bit sensor number (in->sensor_num). cros_ec_sensorhub_ring_handler() validates the FIFO event count, the per-read count and the ring bound, but not the sensor number, which cros_ec_sensor_ring_process_event() then uses unchecked to index sensorhub->batch_state[] - allocated with only sensorhub->sensor_num entries. A sensor number of sensor_num or larger is an out-of-bounds read and write of batch_state[]. Validate the sensor number in the ring handler, where each event is read from the EC, and drop a malformed event before it is used.

Announced Source revision 1
Original source ↗

CVE-2026-81017

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-81017

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "3a76b87e1d065183e2e7ae5b800cb1f6e84f543d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "2b602ecf6193ecb9720c78b6728d7e09370b1ff1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "324880f94ba3c6269a607e04f78a4dd4a66b3f53",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "d1b4add68dabfdd6481a4fa198bf3b473d2634d7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "3d2636dce0a8fe9eecad29010699847be425dc80",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "5eaf7faa99578ae090030d1e2e6ea3b37a615496",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "4d9bf63ed74f859c6698bc01d8fb216ef9253867",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "145d59baff5944b71551ac518d7fd7d377a9c820",
        "lessThan": "833740a2333c2e4db4e02e3d0ffba04e8718a5f3",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/platform/chrome/cros_ec_sensorhub_ring.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.7",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/platform/chrome/cros_ec_sensorhub_ring.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-81017

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#34971 · Revision 1
Added to Heist Feed
Publisher date
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