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CVE-2026-80772— HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于joycon_ctlr_read_handler函数对HID输入报告仅进行12字节长度检查，导致解析49字节的joycon_input_report结构体时发生越界读取，恶意或伪造的Joy-Con/Pro Controller可触发此漏洞，导致驱动程序内部内存泄露。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 2af16c1f846bd60240745bbd3afa13d5f040c61a< 33ea29f8b6141f2d265de807e110a6435b355cb0 affected
2af16c1f846bd60240745bbd3afa13d5f040c61a< bd397c4123a4bc084913d8c7fdb40ef94e9f8172 affected
2af16c1f846bd60240745bbd3afa13d5f040c61a< addca61f9a23c0d20a387c2040e70479f54518e1 affected
2af16c1f846bd60240745bbd3afa13d5f040c61a< 51cfd1adbe7a46bb08af162abb3ab3b6820e2d15 affected
2af16c1f846bd60240745bbd3afa13d5f040c61a< d4cabd4089adb59cf7974915737c52cc47a9bb1b affected
2af16c1f846bd60240745bbd3afa13d5f040c61a< 34725ed4719da424113db8449fb5485aaf71a913 affected
2af16c1f846bd60240745bbd3afa13d5f040c61a< 27b376b945c0aac46fcdfcc950b14a85b874b557 affected
5.16 affected
… +8 more rows
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I. Basic Information for CVE-2026-80772

Vulnerability Information
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Vulnerability Title
HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于joycon_ctlr_read_handler函数对HID输入报告仅进行12字节长度检查，导致解析49字节的joycon_input_report结构体时发生越界读取，恶意或伪造的Joy-Con/Pro Controller可触发此漏洞，导致驱动程序内部内存泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2af16c1f846bd60240745bbd3afa13d5f040c61a ~ 33ea29f8b6141f2d265de807e110a6435b355cb0 -
Linux Linux 5.16 -

II. Public POCs for CVE-2026-80772

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III. Intelligence Information for CVE-2026-80772

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Patches & Fixes for CVE-2026-80772 (7)

Same Patch Batch · Linux · 2026-09-04 · 156 CVEs total

CVE-2026-80865 bpf: Add missing access_ok call to copy_user_syms
CVE-2026-80856 fuse: fix invalidate lock leak on setattr writeback failure
CVE-2026-80857 fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free
CVE-2026-80858 fuse: publish io-uring queues with release semantics
CVE-2026-80859 fuse: fix missing barrier when checking io-uring readiness
CVE-2026-80860 fuse: fix race between interrupt and resend
CVE-2026-80861 usb: xhci: bail out of setup if the controller is inaccessible
CVE-2026-80862 nvme-tcp: fix usage of page_frag_cache
CVE-2026-80863 RDMA/rxe: Fix OOB in free_rd_atomic_resources()
CVE-2026-80864 RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp
CVE-2026-80870 drm/amdkfd: Validate CRIU-restored IDs before idr_alloc
CVE-2026-80874 arm64: dts: renesas: ironhide: Describe inline ECC carveouts
CVE-2026-80873 KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions
CVE-2026-80872 ALSA: hda/tas2781: Cancel async firmware request at unbind
CVE-2026-80871 crypto: xilinx-trng - Remove crypto_rng interface
CVE-2026-80868 ntfs3: Allocate iomap inline_data using alloc_page
CVE-2026-80866 tipc: avoid busy looping in tipc_exit_net()
CVE-2026-80867 alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
CVE-2026-80855 fuse: fix invalidate lock leak on open O_TRUNC DAX failure
CVE-2026-80869 ntfs: bound the attribute-list entry in ntfs_read_inode_mount()

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80772

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