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Description

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A vulnerability has been found in riscv-boom SonicBOOM up to 2.2.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component L1 Data Cache Handler. The manipulation leads to observable timing discrepancy. Local access is required to approach this attack. The complexity of an attack is rather high. The exploitation appears to be difficult. The vendor was contacted early about this disclosure but did not respond in any way.

In riscv-boom SonicBOOM bis 2.2.3 wurde eine Schwachstelle gefunden. Sie wurde als problematisch eingestuft. Betroffen ist eine unbekannte Verarbeitung der Komponente L1 Data Cache Handler. Dank der Manipulation mit unbekannten Daten kann eine observable timing discrepancy-Schwachstelle ausgenutzt werden. Der Angriff muss lokal angegangen werden. Die Komplexität eines Angriffs ist eher hoch. Sie gilt als schwierig ausnutzbar.

PUBLISHED Reserved 2025-08-08 | Published 2025-08-09 | Updated 2025-08-12 | Assigner VulDB




LOW: 2.0CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 2.5CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
LOW: 2.5CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
1.0AV:L/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR

Problem types

Observable Timing Discrepancy

Information Exposure Through Discrepancy

Product status

2.2.0
affected

2.2.1
affected

2.2.2
affected

2.2.3
affected

Timeline

2025-08-08:Advisory disclosed
2025-08-08:VulDB entry created
2025-08-08:VulDB entry last update

Credits

lcyf-fizz (VulDB User) reporter

References

github.com/fizz-is-on-the-way/vuls_cpu/tree/master/MSHRush exploit

vuldb.com/?id.319297 (VDB-319297 | riscv-boom SonicBOOM L1 Data Cache timing discrepancy) vdb-entry

vuldb.com/?ctiid.319297 (VDB-319297 | CTI Indicators (IOB, IOC, TTP)) signature permissions-required

vuldb.com/?submit.625550 (Submit #625550 | SonicBOOM riscv-boom V2.2.3-210-gd77c2c3f implemented in Chipyard (V1.3.0) Improper Protection of Physical Side Channels) third-party-advisory

github.com/fizz-is-on-the-way/vuls_cpu/tree/master/MSHRush related

cve.org (CVE-2025-8774)

nvd.nist.gov (CVE-2025-8774)

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