Unreliable __builtin_frame_address(1) in riscv Kernel

Kernel Updated 02 Oct 2025

Summary

27/02/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000421: riscv: eliminate unreliable __builtin_frame_address(1). Affects Kernel versions >= eac2f3059e02382d91f8c887462083841d6ea2a3, < 71f46f3d1bf29ee5b0a53dc21462125f754491dd. No fix is published. How to fix ↓

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Background

The riscv package is a part of the Linux Kernel ecosystem. It provides support for the RISC-V architecture, which is an open-source instruction set architecture (ISA) designed for computer processors. The __builtin_frame_address(1) function is used in the riscv package to obtain the address of the calling function's stack frame. However, this function has been found to be unreliable and can lead to potential security vulnerabilities.

Vulnerability Detail

The vulnerability arises from the unreliable nature of the __builtin_frame_address(1) function in the riscv package. This function is used to determine the address of the calling function's stack frame, but its results can be inconsistent and incorrect. This inconsistency can potentially be exploited by attackers to manipulate the stack frame and execute arbitrary code. The impact and attack plausibility of this vulnerability have not been proven yet.

How To Fix

No fixed version is published for this vulnerability.

The vulnerability has been fixed in the Linux Kernel version v5.15.24 by commit 71f46f3d1bf29ee5b0a53dc21462125f754491dd. To fix the vulnerability, users of the riscv package should update their Linux Kernel to version v5.15.24 or later.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The riscv package in the Linux Kernel is affected by an unreliable __builtin_frame_address(1) function, which can potentially be exploited by attackers. It is recommended to update the Linux Kernel to version v5.15.24 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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