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CVE-2026-80574

Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet

HIGH
8.4
CVSS Score
Published: August 26, 2026 at 02:37 PM UTC
Updated: October 16, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.4
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet Make finger2 (and also finger1) unsigned, so that if the finger index in the packet is 0 then subtracting 1 creates an array index which overflows above the existing check for FOC_MAX_FINGERS, as the existing comment says it should, instead of writing to state->fingers[-1].

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
05be1d079ec0b3691783e4384b1ada82149ff7d24.05be1d79ec0b3691783e4384b1ada82149ff7d2
Vendor states this is fixed in 063b4c6a6f3fc01bca085c442000c9c100fdbd93 (fixed)
Vendor states this is fixed in 1842e47126816e56d30c4f856f9854fd7831066c (fixed)
Vendor states this is fixed in 296736076b3fd078742651c719555a488624023a (fixed)
Vendor states this is fixed in 6f6d5fe29efdf5001bc146fc292e6592cace93eb (fixed)
Vendor states this is fixed in 81b07470cb2937ceb74b00be88151582a322433b (fixed)
Vendor states this is fixed in 83c265bfc084d77e2171d4b67362150ab38c935b (fixed)
Vendor states this is fixed in bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f (fixed)
Vendor states this is fixed in ca92c98b806839c108995b2bbff7061515bdfb53 (fixed)
Vendor states this is fixed in 4.0 (unaffected)
Vendor states this is fixed in 5.10.266 (unaffected)
Vendor states this is fixed in 5.15.217 (unaffected)
Vendor states this is fixed in 6.1.184 (unaffected)
Vendor states this is fixed in 6.12.105 (unaffected)
Vendor states this is fixed in 6.18.46 (unaffected)
Vendor states this is fixed in 6.6.153 (unaffected)
Vendor states this is fixed in 7.1.10 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/063b4c6a6f3fc01bca085c442000c9c100fdbd93
Source: cverecord
https://git.kernel.org/stable/c/bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f
Source: cverecord
https://git.kernel.org/stable/c/ca92c98b806839c108995b2bbff7061515bdfb53
Source: cverecord
https://git.kernel.org/stable/c/81b07470cb2937ceb74b00be88151582a322433b
Source: cverecord
https://git.kernel.org/stable/c/6f6d5fe29efdf5001bc146fc292e6592cace93eb
Source: cverecord
https://git.kernel.org/stable/c/83c265bfc084d77e2171d4b67362150ab38c935b
Source: cverecord
https://git.kernel.org/stable/c/1842e47126816e56d30c4f856f9854fd7831066c
Source: cverecord
https://git.kernel.org/stable/c/296736076b3fd078742651c719555a488624023a

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.4HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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