Kernel panic via erroneous SV39 store fault
Published Aug 19, 2025 · Updated Aug 19, 2025
Denial of service in riscv-boom SonicBOOM 1.2 allows physically proximate attackers to trigger a kernel panic through an S-mode store. In SV39 mode, the virtual-memory path raises Store/AMO access fault 7 for an sd instruction against a valid writable kernel mapping instead of completing the store. The reproduced path requires paging, an M-mode-to-S-mode transition, and a store to mapped kernel memory; the resulting fault can interrupt the kernel.
Summary
What happened
Denial of service in riscv-boom SonicBOOM 1.2 allows physically proximate attackers to trigger a kernel panic through an S-mode store. In SV39 mode, the virtual-memory path raises Store/AMO access fault 7 for an sd instruction against a valid writable kernel mapping instead of completing the store. The reproduced path requires paging, an M-mode-to-S-mode transition, and a store to mapped kernel memory; the resulting fault can interrupt the kernel.
The record
- CVE
- CVE-2025-50897
- Published
- Aug 19, 2025
- Updated
- Aug 19, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-284, CWE-434, CWE-693, T1499
- Attack vector
- physical
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 19, 2025CVE publishedPublication date reported by the CVE source.
- Aug 19, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- BOOMv1.2 Store Access Fault Vulnerability POCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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