OpenXiangShan aecf601e803bfd2371667a3fb60bfcd83c333027 information disclosure

Summaryinfo

A vulnerability was found in OpenXiangShan XiangShan aecf601e803bfd2371667a3fb60bfcd83c333027. It has been rated as problematic. The impacted element is an unknown function. Performing a manipulation results in information disclosure. This vulnerability is known as CVE-2026-29642. Attacking locally is a requirement. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in OpenXiangShan XiangShan aecf601e803bfd2371667a3fb60bfcd83c333027. This affects an unknown function. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

A local attacker who can execute privileged CSR operations (or can induce firmware to do so) performs carefully crafted reads/writes to menvcfg (e.g., csrrs in M-mode). On affected XiangShan versions (commit aecf601e803bfd2371667a3fb60bfcd83c333027, 2024-11-19), these menvcfg accesses can unexpectedly set WPRI (reserved) bits in the status view (xstatus) to 1. RISC-V defines WPRI fields as "writes preserve values, reads ignore values," i.e., they must not be modified by software manipulating other fields, and menvcfg itself contains multiple WPRI fields.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-29642 since 03/04/2026. The exploitability is told to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• OpenXiangShan

Name

• XiangShan

Version

• aecf601e803bfd2371667a3fb60bfcd83c333027

License

• open-source

Website

• Product: https://github.com/OpenXiangShan/XiangShan/

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Entryinfo

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