#VU106807 Reachable assertion in Linux kernel - CVE-2025-21902

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to reachable assertion within the yoga_c630_ucsi_async_control() function in drivers/usb/typec/ucsi/ucsi_yoga_c630.c, within the ucsi_stm32g0_irq_handler() function in drivers/usb/typec/ucsi/ucsi_stm32g0.c, within the pmic_glink_ucsi_connector_status() function in drivers/usb/typec/ucsi/ucsi_glink.c, within the ucsi_acpi_read_version(), ucsi_acpi_async_control() and ucsi_gram_sync_control() functions in drivers/usb/typec/ucsi/ucsi_acpi.c, within the ucsi_reset_ppm() and ucsi_create() functions in drivers/usb/typec/ucsi/ucsi.c. A local user can perform a denial of service (DoS) attack.

Remediation

External links

• https://git.kernel.org/stable/c/012b98cdb54c7d47743ee7fc402fa23f2d90529a
• https://git.kernel.org/stable/c/1aec5c9066965ac0984e385bbc31455ae31cbffc
• https://git.kernel.org/stable/c/976e7e9bdc7719a023a4ecccd2e3daec9ab20a40
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.19
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.7
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14