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CVE-2026-98206— Input: cyttsp5 - clamp the HID report size before memcpy

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： 输入子系统：cyttsp5 —— 在 memcpy 之前对 HID 报告大小进行上限限制 该大小字段来自设备，并被用作将数据复制到 response_buf 的 memcpy() 长度，而 response_buf 的大小为 CY_MAX_INPUT 字节。

AI Predicted 8.8 Difficulty: Moderate EPSS 0.18% · P6

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 5b0c03e24a061f9c9e8b28fa157b80990c559a37< b172c69e67bc71f71f6e3d8b3258b3dec29e42c6 affected
5b0c03e24a061f9c9e8b28fa157b80990c559a37< d41a80d852f2948c6d388c520e76c0a72897f003 affected
5b0c03e24a061f9c9e8b28fa157b80990c559a37< 9eb261092d4c967679fa351b7190c6d9082b07c5 affected
5b0c03e24a061f9c9e8b28fa157b80990c559a37< 495955feb57750de4a641da13d7e51fb4d0a9764 affected
5b0c03e24a061f9c9e8b28fa157b80990c559a37< 85f080fb87ed5cd3e46121be677f52c82f26a0ab affected
6.2 affected
< 6.2 unaffected
6.6.158≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-98206

Vulnerability Information
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Vulnerability Title
Input: cyttsp5 - clamp the HID report size before memcpy
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Input: cyttsp5 - clamp the HID report size before memcpy The size field comes from the device and is used as the memcpy() length into response_buf, which is CY_MAX_INPUT bytes.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 5b0c03e24a061f9c9e8b28fa157b80990c559a37 ~ b172c69e67bc71f71f6e3d8b3258b3dec29e42c6 -
Linux Linux 6.2 -

II. Public POCs for CVE-2026-98206

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III. Intelligence Information for CVE-2026-98206

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Patches & Fixes for CVE-2026-98206 (5)

Same Patch Batch · Linux · 2026-10-06 · 208 CVEs total

CVE-2026-98323 9.8 CRITICAL RDMA/siw: Bound fragmented header copies by the remaining length
CVE-2026-98365 9.8 CRITICAL RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access
CVE-2026-98282 8.8 HIGH powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba
CVE-2026-98283 8.8 HIGH KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid()
CVE-2026-98339 8.8 HIGH wifi: cfg80211: don't filter by BSS type when removing stale entries
CVE-2026-98171 8.8 HIGH smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs
CVE-2026-98261 8.1 HIGH cifs: Fix server use-after-free in cifs_chan_skip_or_disable()
CVE-2026-98357 8.1 HIGH IB/isert: wait for deferred control PDU completions before releasing the connection
CVE-2026-98239 8.1 HIGH net: lan743x: fix RX checksum use-after-free
CVE-2026-98341 7.8 HIGH wifi: cfg80211: don't free driver-owned scan requests
CVE-2026-98324 7.8 HIGH dmaengine: pxa: fix double counting of the hw descriptors
CVE-2026-98228 7.8 HIGH mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ
CVE-2026-98229 7.8 HIGH xfrm: save input state data before secpath resets
CVE-2026-98320 7.8 HIGH netfilter: flowtable: hold reference on ct until flow is released
CVE-2026-98318 7.8 HIGH smb: client: validate absolute native symlink targets before NT fixups
CVE-2026-98315 7.8 HIGH ntfs: protect runlist updates with the runlist lock
CVE-2026-98260 7.8 HIGH exec: Cleanup POSIX timers right after de_thread()
CVE-2026-98256 7.8 HIGH signal: Prevent exec() race
CVE-2026-98258 7.8 HIGH posix-cpu-timers: Prevent freeing a timer which is queued on the expiry list
CVE-2026-98254 7.8 HIGH swiotlb: use the adjusted address for the highmem page lookup

Showing top 20 of 208 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98206

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