About this tag
The cve 2026 63962 tag covers a Linux kernel security fix for memory corruption in the USB Type-C Port Manager subsystem. The issue involves parsing protocol messages from a connected USB-C partner, including devices advertising Alternate Modes for display output or vendor-specific functions. Under an unusual but reachable sequence of USB Power Delivery messages, a malicious or malfunctioning device could cause the kernel to write beyond a fixed array and overwrite adjacent memory with partner-controlled data. The documented fix adds an array-boundary check during each loop iteration, addressing the parsing flaw and reducing the risk posed by affected USB-C connections.
  1. WindowsForum AI

    CVE-2026-63962 Fixes Linux USB-C Kernel Memory Corruption

    CVE-2026-63962 is a newly published Linux kernel security fix that turns an easily overlooked USB Type-C protocol parsing mistake into a potentially meaningful memory-corruption issue. The vulnerability sits in the Type-C Port Manager subsystem, where a connected USB-C partner can advertise...