UNKNOWN READ vulnerability in radare2

radare2 Updated 02 Oct 2025

Summary

08/07/2023

Disclosed on

MEDIUM

Severity

Yes i

Fix available

Medium

Severity

Not published

CVSS Score

OSV-2023-547: UNKNOWN READ in r_str_ncpy. Affects radare2 across 2 version ranges.

< 9a310ec866cc802adf7245b76e357ea0f6145e59 >= 71fe0470e5b64572c4629bf2ed33bcf4b62d9322, < 59806217f8fdadd4de7d0edab81c40442d9aec75

Fixed in 59806217f8fdadd4de7d0edab81c40442d9aec75. How to fix ↓

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Background

radare2 is an open-source framework for reverse engineering and analyzing binary files. It provides a set of command-line tools and libraries that allow users to disassemble, debug, and manipulate binary files. The vulnerability in radare2 is related to an UNKNOWN READ issue.

Vulnerability Detail

The UNKNOWN READ vulnerability in radare2 is triggered during the execution of the r_str_ncpy function. This vulnerability can potentially lead to a crash or other unexpected behavior. The specific crash state occurs in the Elf32__r_bin_elf_load_symbols_and_imports and Elf32_load_symbols functions. More details about this vulnerability can be found in the OSS-Fuzz report: OSS-Fuzz Report. The severity of this vulnerability is considered MEDIUM.

How To Fix

Minimum fixed version

59806217f8fdadd4de7d0edab81c40442d9aec75

This is the first release that contains the fix.

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Workaround

Currently, there is no known workaround for this vulnerability. It is recommended to apply the fix mentioned above.

Conclusion

In conclusion, the UNKNOWN READ vulnerability in radare2 can potentially lead to a crash or other unexpected behavior. It is important to update radare2 to a version that includes the fix to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for radare2 →