critical
9.8
CWE
119
Advisory Published
Updated

CVE-2021-46760: Buffer Overflow

First published: Tue May 09 2023(Updated: )

A malicious or compromised UApp or ABL can send a malformed system call to the bootloader, which may result in an out-of-bounds memory access that may potentially lead to an attacker leaking sensitive information or achieving code execution.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
Amd Ryzen 3945wx Firmware=castlepeakwspi-swrx8_1.0.0.9
Amd Ryzen 3945wx
Amd Ryzen 3955wx Firmware=castlepeakwspi-swrx8_1.0.0.9
Amd Ryzen 3955wx
Amd Ryzen 3960x Firmware=castlepeakwspi-swrx8_1.0.0.9
Amd Ryzen 3960x
Amd Ryzen 3970x Firmware=castlepeakwspi-swrx8_1.0.0.9
Amd Ryzen 3970x
Amd Ryzen 3975wx Firmware=castlepeakwspi-swrx8_1.0.0.9
Amd Ryzen 3975wx
Amd Ryzen 3990x Firmware=castlepeakwspi-swrx8_1.0.0.9
Amd Ryzen 3990x
Amd Ryzen 3995wx Firmware=castlepeakwspi-swrx8_1.0.0.9
Amd Ryzen 3995wx
Amd Ryzen 3945wx Firmware=chagallwspi-swrx8_1.0.0.2
Amd Ryzen 3955wx Firmware=chagallwspi-swrx8_1.0.0.2
Amd Ryzen 3960x Firmware=chagallwspi-swrx8_1.0.0.2
Amd Ryzen 3970x Firmware=chagallwspi-swrx8_1.0.0.2
Amd Ryzen 3975wx Firmware=chagallwspi-swrx8_1.0.0.2
Amd Ryzen 3990x Firmware=chagallwspi-swrx8_1.0.0.2
Amd Ryzen 3995wx Firmware=chagallwspi-swrx8_1.0.0.2
Amd Ryzen 3945wx Firmware=castlepeakpi-sp3r3_1.0.0.7
Amd Ryzen 3955wx Firmware=castlepeakpi-sp3r3_1.0.0.7
Amd Ryzen 3960x Firmware=castlepeakpi-sp3r3_1.0.0.7
Amd Ryzen 3970x Firmware=castlepeakpi-sp3r3_1.0.0.7
Amd Ryzen 3975wx Firmware=castlepeakpi-sp3r3_1.0.0.7
Amd Ryzen 3990x Firmware=castlepeakpi-sp3r3_1.0.0.7
Amd Ryzen 3995wx Firmware=castlepeakpi-sp3r3_1.0.0.7

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-46760?

    CVE-2021-46760 is a vulnerability that allows a malicious or compromised UApp or ABL to send a malformed system call to the bootloader, potentially leading to an out-of-bounds memory access and the leakage of sensitive information or code execution.

  • How severe is CVE-2021-46760?

    CVE-2021-46760 has a severity rating of 9.8, which is considered critical.

  • What software versions are affected by CVE-2021-46760?

    The affected software versions include Amd Ryzen 3945wx Firmware version castlepeakwspi-swrx8_1.0.0.9, Amd Ryzen 3955wx Firmware version castlepeakwspi-swrx8_1.0.0.9, Amd Ryzen 3960x Firmware version castlepeakwspi-swrx8_1.0.0.9, Amd Ryzen 3970x Firmware version castlepeakwspi-swrx8_1.0.0.9, Amd Ryzen 3975wx Firmware version castlepeakwspi-swrx8_1.0.0.9, Amd Ryzen 3990x Firmware version castlepeakwspi-swrx8_1.0.0.9, Amd Ryzen 3995wx Firmware version castlepeakwspi-swrx8_1.0.0.9, Amd Ryzen 3945wx Firmware version chagallwspi-swrx8_1.0.0.2, Amd Ryzen 3955wx Firmware version chagallwspi-swrx8_1.0.0.2, Amd Ryzen 3960x Firmware version chagallwspi-swrx8_1.0.0.2, Amd Ryzen 3970x Firmware version chagallwspi-swrx8_1.0.0.2, Amd Ryzen 3975wx Firmware version chagallwspi-swrx8_1.0.0.2, Amd Ryzen 3990x Firmware version chagallwspi-swrx8_1.0.0.2, Amd Ryzen 3995wx Firmware version chagallwspi-swrx8_1.0.0.2, Amd Ryzen 3945wx Firmware version castlepeakpi-sp3r3_1.0.0.7, Amd Ryzen 3955wx Firmware version castlepeakpi-sp3r3_1.0.0.7, Amd Ryzen 3960x Firmware version castlepeakpi-sp3r3_1.0.0.7, Amd Ryzen 3970x Firmware version castlepeakpi-sp3r3_1.0.0.7, Amd Ryzen 3975wx Firmware version castlepeakpi-sp3r3_1.0.0.7, Amd Ryzen 3990x Firmware version castlepeakpi-sp3r3_1.0.0.7, Amd Ryzen 3995wx Firmware version castlepeakpi-sp3r3_1.0.0.7.

  • How can CVE-2021-46760 be fixed?

    To fix CVE-2021-46760, it is recommended to apply the latest firmware updates provided by AMD.

  • Where can I find more information about CVE-2021-46760?

    You can find more information about CVE-2021-46760 on the official AMD product security bulletin at the following link: [AMD Product Security Bulletin](https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001)

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