CVE-2022-34635: The mstatus.sd field in CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a does not update when the mstatus.

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2022-34635 is a critical-severity flaw (CVSS 9.8) affecting cva6. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The mstatus.sd field in CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a does not update when the mstatus.fs field is set to Dirty.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Published	2022-07-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openhwgroup

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-07-18 23:15 UTCPublished CVE record published
2026-06-17 04:50 UTCUpdated Record last modified

openhwgroup cva6 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cva6 || rpm -q cva6 || cva6 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-34635?

cva6: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-34635 being exploited?

CVE-2022-34635 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-34635 affect?

CVE-2022-34635 affects cva6. Severity is critical (CVSS 9.8). The mstatus.sd field in CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a does not update when the mstatus.fs field is set to Dirty.

How urgent is CVE-2022-34635?

Priority 59/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-34641 MEDIUM 5.5 MITIGATE MITIGATE CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a and RISCV-Boom commit ad64c5419151e5e886daee7084d8399713b
CVE-2022-34640 MEDIUM 5.5 MITIGATE The *tval of ecall/ebreak in CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a was discovered to be incorre
CVE-2022-34639 MEDIUM 5.5 MITIGATE CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a treats non-standard fence instructions as illegal which c
CVE-2022-34637 MEDIUM 5.5 MITIGATE CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a implements an incorrect exception type when an illegal vi
CVE-2022-34636 MEDIUM 5.5 MITIGATE CVA6 commit d315ddd0f1be27c1b3f27eb0b8daf471a952299a and RISCV-Boom commit ad64c5419151e5e886daee7084d8399713b

References

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