CVE-2026-80574

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].

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-26 15:17

Updated : 2026-08-27 06:17

NVD link : CVE-2026-80574

Mitre link : CVE-2026-80574

CVE.ORG link : CVE-2026-80574

JSON object : View

Products Affected

No product.

CWE

No CWE.

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fix array out-of-bounds in focaltech_process_rel_packet\n\nMake finger2 (and also finger1) unsigned, so that if the finger index in\nthe packet is 0 then subtracting 1 creates an array index which overflows\nabove the existing check for FOC_MAX_FINGERS, as the existing comment says\nit should, instead of writing to state->fingers[-1]."}], "lastModified": "2026-08-27T06:17:43.003", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}