GHSA-H6XM-C6R4-VMWF

GHSA-H6XM-C6R4-VMWF is a medium-severity security vulnerability in spl-token-swap (rust), affecting versions <= 3.0.0. No fixed version is listed yet.

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Summary

Unsound usages of u8 type casting in spl-token-swap

The library provides a safe public API unpack to cast u8 array to arbitrary types, which can cause to undefined behaviors. The length check of array can only prevent out-of-bound access on the return type. However, it can't prevent misaligned pointer when casting u8 pointer to a type aligned to larger bytes. For example, if we assign u16 to T, misaligned raw pointer dereference could happen and cause to panic. Even if we pass the type aligned to same byte as u8 (e.g., bool), it could construct a illegal type since bool can only have 0 or 1 as bit patterns, which is also an undefined behavior. The further exploits of the bug here are still not clear, so we would report this issue as unsound.

The details of PoC to reproduce undefined behavior are provided in the issue.

Impact

Affected versions

spl-token-swap (<= 3.0.0)

Security releases

Not available

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

No fixed version is listed for GHSA-H6XM-C6R4-VMWF yet.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

  1. What is GHSA-H6XM-C6R4-VMWF? GHSA-H6XM-C6R4-VMWF is a medium-severity security vulnerability in spl-token-swap (rust), affecting versions <= 3.0.0. No fixed version is listed yet.
  2. Which versions of spl-token-swap are affected by GHSA-H6XM-C6R4-VMWF? spl-token-swap (rust) versions <= 3.0.0 is affected.
  3. Is there a fix for GHSA-H6XM-C6R4-VMWF? No fixed version is listed for GHSA-H6XM-C6R4-VMWF yet. Monitor the advisory for updates and apply mitigations in the interim.
  4. Is GHSA-H6XM-C6R4-VMWF exploitable, and should I be worried? Whether GHSA-H6XM-C6R4-VMWF is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
  5. What actually determines whether GHSA-H6XM-C6R4-VMWF is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

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