What’s Vulnerable › Vulnerabilities

CVE-2023-40022: Rizin vulnerable to Integer Overflow in C++ demangler logic

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-24 · updated 2026-06-17
• Weakness: CWE-190

Description

Rizin is a UNIX-like reverse engineering framework and command-line toolset. Versions 0.6.0 and prior are vulnerable to integer overflow in `consume_count` of `src/gnu_v2/cplus-dem.c`. The overflow check is valid logic but, is missing the modulus if the block once compiled. The compiler sees this block as unreachable code since the prior statement is multiplication by 10 and fails to consider overflow assuming the count will always be a multiple of 10. Rizin version 0.6.1 contains a fix for the issue. A temporary workaround would be disabling C++ demangling using the configuration option `bin.demangle=false`.

Affected products

• rizinorg rizin: before 0.6.1 — fixed in 0.6.1

How to fix

Upgrade to a fixed version: rizinorg rizin 0.6.1. Check the vendor advisory for mitigations.

References

• https://github.com/rizinorg/rizin/pull/3753
• https://github.com/rizinorg/rizin/security/advisories/GHSA-92h6-wwc2-53cq
• https://github.com/rizinorg/rz-libdemangle/blob/main/src/gnu_v2/cplus-dem.c#L419
• https://github.com/rizinorg/rz-libdemangle/commit/51d016750e704b27ab8ace23c0f72acabca67018
• https://github.com/rizinorg/rz-libdemangle/pull/54
• https://github.com/rizinorg/rizin/pull/3753
• https://github.com/rizinorg/rizin/security/advisories/GHSA-92h6-wwc2-53cq
• https://github.com/rizinorg/rz-libdemangle/blob/main/src/gnu_v2/cplus-dem.c#L419
• https://github.com/rizinorg/rz-libdemangle/commit/51d016750e704b27ab8ace23c0f72acabca67018
• https://github.com/rizinorg/rz-libdemangle/pull/54

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