CVE-2025-63384: A vulnerability was discovered in RISC-V Rocket-Chip v1.6 and before implementation where the SRET (Supervisor

Q: How do I fix CVE-2025-63384?

rocketchip: upgrade to newer than 1.6. Exact commands for each OS are on this page.

Q: Is CVE-2025-63384 being exploited?

CVE-2025-63384 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-63384 affect?

CVE-2025-63384 affects rocketchip. Severity is medium (CVSS 6.5). A vulnerability was discovered in RISC-V Rocket-Chip v1.6 and before implementation where the SRET (Supervisor-mode Exception Return) instruction fails to correctly transition the processor's privilege level. Instead of downgrading from Mac

Q: How urgent is CVE-2025-63384?

Priority 34/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2025-63384 is a medium-severity flaw (CVSS 6.5) affecting rocketchip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was discovered in RISC-V Rocket-Chip v1.6 and before implementation where the SRET (Supervisor-mode Exception Return) instruction fails to correctly transition the processor's privilege level. Instead of downgrading from Machine-mode (M-mode) to Supervisor-mode (S-mode) as specified by the sstatus.SPP bit, the processor incorrectly remains in M-mode, leading to a critical privilege retention vulnerability.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-266
Published	2025-11-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: chipsalliance

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

Am I affected?

Timeline

2025-11-10 20:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

chipsalliance rocketchip UPGRADE

Affected: <= 1.6

Fixed in: newer than 1.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rocketchip

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rocketchip

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2025-63384?

rocketchip: upgrade to newer than 1.6. Exact commands for each OS are on this page.

Is CVE-2025-63384 being exploited?

CVE-2025-63384 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-2025-63384 affect?

CVE-2025-63384 affects rocketchip. Severity is medium (CVSS 6.5). A vulnerability was discovered in RISC-V Rocket-Chip v1.6 and before implementation where the SRET (Supervisor-mode Exception Return) instruction fails to correctly transition the processor's privilege level. Instead of downgrading from Mac

How urgent is CVE-2025-63384?

Priority 34/100. Public exploit reference

References

← Back to latest CVEs