Linux kernel mcp2221 driver write use-after-free

high severity · published 2026-09-11

In the Linux kernel driver for the MCP2221 I2C/SMBus bridge, a delayed or spurious device report can make the driver copy device data into memory that was already freed, a write use-after-free. The advisory names no fixed version, so check your distribution's kernel update notice.

CVE: CVE-2026-89622

Source: NVD

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