CVE-2026-80574

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < 063b4c6a6f3fc01bca085c442000c9c100fdbd93affected
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < bb502d79acb9ac1e0a77fa8bc7b7b4729140b11faffected
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < ca92c98b806839c108995b2bbff7061515bdfb53affected
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < 81b07470cb2937ceb74b00be88151582a322433baffected
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < 6f6d5fe29efdf5001bc146fc292e6592cace93ebaffected
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < 83c265bfc084d77e2171d4b67362150ab38c935baffected
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < 1842e47126816e56d30c4f856f9854fd7831066caffected
LinuxLinux05be1d079ec0b3691783e4384b1ada82149ff7d2 < 296736076b3fd078742651c719555a488624023aaffected
LinuxLinux4.0affected
LinuxLinux0 < 4.0unaffected
LinuxLinux5.10.266 <= 5.10.*unaffected
LinuxLinux5.15.217 <= 5.15.*unaffected
LinuxLinux6.1.184 <= 6.1.*unaffected
LinuxLinux6.6.153 <= 6.6.*unaffected
LinuxLinux6.12.105 <= 6.12.*unaffected
LinuxLinux6.18.46 <= 6.18.*unaffected
LinuxLinux7.1.10 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References