Answer in brief
CVE-2026-80772 records a Unknown severity vulnerability in HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2af16c1f846bd60240745bbd3afa13d5f040c61a <33ea29f8b6141f2d265de807e110a6435b355cb0 || >=2af16c1f846bd60240745bbd3afa13d5f040c61a <bd397c4123a4bc084913d8c7fdb40ef94e9f8172 || >=2af16c1f846bd60240745bbd3afa13d5f040c61a <addca61f9a23c0d20a387c2040e70479f54518e1 || >=2af16c1f846bd60240745bbd3afa13d5f040c61a <51cfd1adbe7a46bb08af162abb3ab3b6820e2d15 || >=2af16c1f846bd60240745bbd3afa13d5f040c61a <d4cabd4089adb59cf7974915737c52cc47a9bb1b || >=2af16c1f846bd60240745bbd3afa13d5f040c61a <34725ed4719da424113db8449fb5485aaf71a913 || >=2af16c1f846bd60240745bbd3afa13d5f040c61a <27b376b945c0aac46fcdfcc950b14a85b874b557 | 33ea29f8b6141f2d265de807e110a6435b355cb0, bd397c4123a4bc084913d8c7fdb40ef94e9f8172, addca61f9a23c0d20a387c2040e70479f54518e1, 51cfd1adbe7a46bb08af162abb3ab3b6820e2d15, d4cabd4089adb59cf7974915737c52cc47a9bb1b, 34725ed4719da424113db8449fb5485aaf71a913, 27b376b945c0aac46fcdfcc950b14a85b874b557 |
| Linux/Linuxgeneric | 5.16 | Not reported |
Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.