HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()
Summary
| CVE | CVE-2026-80772 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-04 16:18:02 UTC |
| Updated | 2026-09-04 16:18:02 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001730000 probability, percentile 0.068280000 (date 2026-09-07)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 2af16c1f846bd60240745bbd3afa13d5f040c61a 33ea29f8b6141f2d265de807e110a6435b355cb0 git | Not specified |
| CNA | Linux | Linux | affected 2af16c1f846bd60240745bbd3afa13d5f040c61a bd397c4123a4bc084913d8c7fdb40ef94e9f8172 git | Not specified |
| CNA | Linux | Linux | affected 2af16c1f846bd60240745bbd3afa13d5f040c61a addca61f9a23c0d20a387c2040e70479f54518e1 git | Not specified |
| CNA | Linux | Linux | affected 2af16c1f846bd60240745bbd3afa13d5f040c61a 51cfd1adbe7a46bb08af162abb3ab3b6820e2d15 git | Not specified |
| CNA | Linux | Linux | affected 2af16c1f846bd60240745bbd3afa13d5f040c61a d4cabd4089adb59cf7974915737c52cc47a9bb1b git | Not specified |
| CNA | Linux | Linux | affected 2af16c1f846bd60240745bbd3afa13d5f040c61a 34725ed4719da424113db8449fb5485aaf71a913 git | Not specified |
| CNA | Linux | Linux | affected 2af16c1f846bd60240745bbd3afa13d5f040c61a 27b376b945c0aac46fcdfcc950b14a85b874b557 git | Not specified |
| CNA | Linux | Linux | affected 5.16 | Not specified |
| CNA | Linux | Linux | unaffected 5.16 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.185 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.154 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.106 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.47 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.11 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.1 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/33ea29f8b6141f2d265de807e110a6435b355cb0 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/addca61f9a23c0d20a387c2040e70479f54518e1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/34725ed4719da424113db8449fb5485aaf71a913 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/bd397c4123a4bc084913d8c7fdb40ef94e9f8172 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/27b376b945c0aac46fcdfcc950b14a85b874b557 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d4cabd4089adb59cf7974915737c52cc47a9bb1b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/51cfd1adbe7a46bb08af162abb3ab3b6820e2d15 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.