CVEvulnerability
CVE-2025-40065
- Status
- Deferred
- Published
- 2025-10-28
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
RISC-V: KVM: Write hgatp register with valid mode bits
According to the RISC-V Privileged Architecture Spec, when MODE=Bare
is selected,software must write zero to the remaining fields of hgatp.
We have detected the valid mode supported by the HW before, So using a
valid mode to detect how many vmid bits are supported.
References
- https://git.kernel.org/stable/c/2b351e3d04be9e1533f26c3464f1e44a5beace30 git.kernel.org
- https://git.kernel.org/stable/c/5cba8ae00279296a586d0596443109d601b1d116 git.kernel.org
- https://git.kernel.org/stable/c/8b6e327736db013b9e385c3f6f9f0b04ddf26e43 git.kernel.org
- https://git.kernel.org/stable/c/d00b61cd37f4c183ce0edbc9f8ccf6d5430ea357 git.kernel.org