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CVE-2026-80573: Input: iforce - validate input packet lengths

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-26 · updated 2026-08-27

Description

In the Linux kernel, the following vulnerability has been resolved: Input: iforce - validate input packet lengths iforce_process_packet() reads fixed fields from joystick, wheel and status packets without first checking their lengths. In particular, the shared hats-and-buttons helper unconditionally reads data[6]. The status tail is a sequence of 16-bit effect addresses, but an incomplete final address is also consumed. A successful zero-length USB URB additionally reads the packet ID before the common parser is called. Reject the zero-length USB transfer, require the seven-byte joystick and wheel prefixes and the two-byte status prefix, and consume only complete status-tail addresses.

Affected products

• Linux kernel: 2.6.12 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0ec411167655ef3ff3e84f6af685e962aff9a75b
• https://git.kernel.org/stable/c/2c083ab16e33fbff3ab8c752fbf8118ed3dd31ce
• https://git.kernel.org/stable/c/5232529eaf57f08fe37484e301579a1915b93d14
• https://git.kernel.org/stable/c/5751c781d3c97ab6ce0e2a966156ed882152c415
• https://git.kernel.org/stable/c/609be40988898a4d75225ade0ea5c1734757dd33
• https://git.kernel.org/stable/c/84e5cb517f445dadbd5f8bf4ec513540e51f9c36
• https://git.kernel.org/stable/c/a64a8b6b31cd669f0449138e53cc2592d454ccf1
• https://git.kernel.org/stable/c/e73d7a7d913d89141321f5f3f16343ecc200d152

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