CVE-2022-34635
NVD-CWE-OtherPublished: July 18, 2022· Updated: Jun 17, 2026
Official Description
The mstatus.sd field in CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a does not update when the mstatus.fs field is set to Dirty.
Risk Analysis
The CVA6 processor core contains a critical flaw where the mstatus.sd field fails to update correctly when mstatus.fs is set to Dirty. This could lead to inconsistent system states or potential security bypasses in hardware-level operations.
There is no public exploit known, and it is not in the KEV catalog. The vulnerability is remotely exploitable with low complexity.
Consult the OpenHW Group for hardware-level patches or firmware updates to correct the status field update logic.
Technical Analysis
CVE-2022-34635 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (NVD-CWE-Other)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-34635 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts