CVE-2025-63384
Last modified
CVE-2025-63384 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Chipsalliance | Rocketchip | <= 1.6 |
References
- https://github.com/107040503/RISC-V-Vulnerability-Disclosure_SRETExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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