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CVE-2026-80568— Input: synaptics-rmi4 - block s_input when F54 queue is busy

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，以下漏洞已得到解决： 输入：synaptics-rmi4 - 当 F54 队列繁忙时阻塞 s_input 如果在流处理过程中更改输入类型（诊断报告类型），会导致报告大小发生变化。由于 V4L2 缓冲区是依据流启动时的大小进行分配的，如果在流传输期间更改输入类型，且新的大小大于已分配缓冲区的大小，就可能引发堆缓冲区溢出。 修复措施： 当 V4L2 队列处于繁忙状态（即正在流传输）时，通过返回 错误码来阻塞 操作，从而防止上述问题发生。

CVSS 7.8 · High EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< 7e994a9ecc0b49ad2fe63da9c92a8aca8a6614af affected
3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< fa69f93015becf3729716de2199b58540aa99672 affected
3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< 493ba8e794729649689438edba72337111303cc4 affected
3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< 1d718f1461766e9f00a8dbeb4f13f1b1c19d90ac affected
3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< cae79513f9115c350561b16f36adcb47c9bfff12 affected
3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< ff0849705d29277fd1f6fc6596674b9308724fb2 affected
3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< ddd9a53faf3b65e5920cb802cb1db6f4615bdfef affected
3a762dbd5347514c3cb2ac756a92a3d1c7646a2d< fbfd76746adc16d64be29ff113f673b70bc3f5c2 affected
… +10 more rows
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I. Basic Information for CVE-2026-80568

Vulnerability Information
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Vulnerability Title
Input: synaptics-rmi4 - block s_input when F54 queue is busy
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - block s_input when F54 queue is busy Changing the input (diagnostic report type) mid-stream changes the report size. Since V4L2 buffers are allocated based on the size at stream start, changing the input while streaming could lead to a heap buffer overflow if the new size is larger than the allocated buffers. Prevent this by blocking VIDIOC_S_INPUT with -EBUSY if the V4L2 queue is busy (streaming).
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 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d ~ 7e994a9ecc0b49ad2fe63da9c92a8aca8a6614af -
Linux Linux 4.9 -

II. Public POCs for CVE-2026-80568

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III. Intelligence Information for CVE-2026-80568

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Patches & Fixes for CVE-2026-80568 (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

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