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CVE-2026-80559— Input: sur40 - fix input device registration ordering

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.

在 Linux 内核中，已修复以下漏洞： 输入：sur40 - 修复输入设备注册顺序问题 在 函数中， 此前被过早调用，而此时 V4L2 视频设备和 组件尚未完全初始化。如果用户空间在输入设备注册后立即打开该设备， 将被触发并启动 工作线程。该工作线程会调用 并访问尚未初始化的 结构体，从而引发数据竞争，并可能导致系统崩溃。 此外，如果在 成功之后，V4L2 或视频设备注册失败，错误处理路径会错误地调用 （而非 )，这会导致输入核心状态被破坏。 修复方案： 将 移至 的末尾。这确保了在轮询开始之前，V4L2 和视频

CVSS 7.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1069 · Permission Groups Discovery

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux e831cd251fb91d6c25352d322743db0d17ea11dd< cd4ecce2fd87760c0ad9a9d28c9fc62ea1dbfd3d affected
e831cd251fb91d6c25352d322743db0d17ea11dd< dab741c9da72102a37cc1020a929051b7c45f9fb affected
e831cd251fb91d6c25352d322743db0d17ea11dd< 764b507be7b51787e1f577ca3bf0bab7efe81ff8 affected
e831cd251fb91d6c25352d322743db0d17ea11dd< 3e8ed76a4f3572e637653f0654cccdf617903231 affected
e831cd251fb91d6c25352d322743db0d17ea11dd< 83aa12f9f2468a4fbef027c09224dc1011850fb0 affected
e831cd251fb91d6c25352d322743db0d17ea11dd< 5c1c5227c93f18cd329dd754b4df5e0e2daece1e affected
e831cd251fb91d6c25352d322743db0d17ea11dd< beb9b0bd6e6e23f5e9e42b7ef890a50f57f1f3aa affected
e831cd251fb91d6c25352d322743db0d17ea11dd< 9da976eb649c9e2f588a4499410e4d8af687925f affected
… +10 more rows
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I. Basic Information for CVE-2026-80559

Vulnerability Information
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Vulnerability Title
Input: sur40 - fix input device registration ordering
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Input: sur40 - fix input device registration ordering In sur40_probe(), input_register_device() was previously called early before the V4L2 video device and vb2_queue components were fully initialized. If userspace opened the input device immediately upon registration, sur40_open() would trigger and start the sur40_poll() worker thread. This worker thread invokes sur40_process_video() and accesses the uninitialized vb2_queue structure, leading to a data race and potential system crash. Furthermore, if V4L2 or video registration failed after input_register_device() succeeded, the error path fell through to calling input_free_device() on a successfully registered device instead of input_unregister_device(), corrupting input core state. Move input_register_device() to the very end of sur40_probe(). This ensures the V4L2 and video queue structures are fully initialized before polling can start, and naturally resolves the error path bug since input_free_device() is now only called when input registration has not yet occurred. To maintain strict LIFO (Last-In, First-Out) teardown ordering, also move input_unregister_device() to the very beginning of sur40_disconnect(). This guarantees that the input polling worker thread is stopped before V4L2 video components or control handlers are unregistered.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e831cd251fb91d6c25352d322743db0d17ea11dd ~ cd4ecce2fd87760c0ad9a9d28c9fc62ea1dbfd3d -
Linux Linux 4.1 -

II. Public POCs for CVE-2026-80559

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III. Intelligence Information for CVE-2026-80559

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Patches & Fixes for CVE-2026-80559 (8)

Same Patch Batch · Linux · 2026-08-26 · 92 CVEs total

CVE-2026-80589 9.8 CRITICAL block: stop the timeout timer when releasing a never added disk
CVE-2026-74752 9.8 CRITICAL sctp: validate cookie AUTH state before use
CVE-2026-80519 9.8 CRITICAL ovpn: finish crypto callback cleanup before peer release
CVE-2026-80528 9.8 CRITICAL ceph: avoid fs reclaim while using current->journal_info
CVE-2026-74746 9.8 CRITICAL netfilter: flowtable: publish GC-visible tuple last
CVE-2026-80561 9.8 CRITICAL libceph: fix multiple unsafe decodes in decode_locker()
CVE-2026-74744 9.8 CRITICAL ipvlan: inherit needed_headroom and needed_tailroom from phy_dev
CVE-2026-74743 9.8 CRITICAL macvlan: inherit needed_headroom and needed_tailroom from lowerdev
CVE-2026-80558 9.8 CRITICAL libceph: Avoid using invalid osd indices from primary_temp
CVE-2026-80586 9.8 CRITICAL mptcp: options: reset DSS fields in case of unexpected size
CVE-2026-80557 9.8 CRITICAL libceph: fix OOB read in decode_watchers() via missing bounds check
CVE-2026-74737 9.8 CRITICAL net: ethernet: ti: am65-cpsw-nuss: Fix port_id extraction from SRC TAG
CVE-2026-80587 9.8 CRITICAL mptcp: avoid combining some incoming suboptions
CVE-2026-80585 9.4 CRITICAL mptcp: fastopen: only mark MPTFO subflows with SYN data
CVE-2026-74751 9.4 CRITICAL riscv: lib: Fix ZBB strnlen reading past count boundary
CVE-2026-80554 9.3 CRITICAL s390/vfio_ccw: Limit the number of channel program segments
CVE-2026-80551 9.3 CRITICAL s390/vfio_ccw: Ensure first IDAW remains constant
CVE-2026-80547 8.8 HIGH s390/vfio_ccw: Implement a crw lock
CVE-2026-80576 8.8 HIGH drm/amdgpu: reject oversized IBs with per-ring packet limits
CVE-2026-80552 8.8 HIGH s390/vfio_ccw: Ensure index for read/write regions are within range

Showing top 20 of 92 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80559

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