Skip to content
Heist/ feed
Unrated

HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler() joycon_ctlr_read_handler() casts an incoming HID input report to struct joycon_input_report and parses it, guarding the cast only with a 12-byte length check: if (size >= 12) /* make sure it contains the input report */ joycon_parse_report(ctlr, (struct joycon_input_report *)data); struct joycon_input_report is 49 bytes: a 13-byte header followed by a union whose IMU arm is 36 bytes. For an IMU report joycon_parse_report() -> joycon_parse_imu_report() walks that union (struct offsets 13..48), so a report of exactly 12 bytes with data[0] == JC_INPUT_IMU_DATA passes the guard yet is read up to 37 bytes past its declared length. The over-read bytes are decoded into accelerometer/gyroscope values and forwarded to userspace through the "(IMU)" input device, leaking driver-internal memory. data[0] and size are fully controlled by a malicious or spoofed Joy-Con/Pro Controller. Receive buffers are sized to the maximum report length, so this is an over-read within the allocation rather than a slab OOB, but the decoded bytes still reach userspace. The sibling subcmd path in joycon_ctlr_handle_event() already bounds the same cast correctly: if (size < sizeof(struct joycon_input_report) || data[0] != JC_INPUT_SUBCMD_REPLY) break; Use the same sizeof(struct joycon_input_report) bound here.

Announced Source revision 1
Original source ↗

CVE-2026-80772

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-2026-80772

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": "2af16c1f846bd60240745bbd3afa13d5f040c61a",
        "lessThan": "33ea29f8b6141f2d265de807e110a6435b355cb0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2af16c1f846bd60240745bbd3afa13d5f040c61a",
        "lessThan": "bd397c4123a4bc084913d8c7fdb40ef94e9f8172",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2af16c1f846bd60240745bbd3afa13d5f040c61a",
        "lessThan": "addca61f9a23c0d20a387c2040e70479f54518e1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2af16c1f846bd60240745bbd3afa13d5f040c61a",
        "lessThan": "51cfd1adbe7a46bb08af162abb3ab3b6820e2d15",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2af16c1f846bd60240745bbd3afa13d5f040c61a",
        "lessThan": "d4cabd4089adb59cf7974915737c52cc47a9bb1b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2af16c1f846bd60240745bbd3afa13d5f040c61a",
        "lessThan": "34725ed4719da424113db8449fb5485aaf71a913",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2af16c1f846bd60240745bbd3afa13d5f040c61a",
        "lessThan": "27b376b945c0aac46fcdfcc950b14a85b874b557",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/hid/hid-nintendo.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.16"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.16",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.185",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.154",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.106",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.47",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.11",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.1",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/hid/hid-nintendo.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80772

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#34792 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement