CVE-2025-39699

MediumCVSS 5.5/10Last modified Oct 19, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

iommu/riscv: prevent NULL deref in iova_to_phys

The riscv_iommu_pte_fetch() function returns either NULL for unmapped/never-mapped iova, or a valid leaf pte pointer that requires no further validation.

riscv_iommu_iova_to_phys() failed to handle NULL returns. Prevent null pointer dereference in riscv_iommu_iova_to_phys(), and remove the pte validation.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

No affected versions have been published.

Timeline

Published
Sep 5, 2025
Last modified
Oct 19, 2026
NVD status
Analyzed

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CVE-2025-39699: Medium severity, CVSS 5.5 | Vulnix