VulnerabilityModified

CVE-2025-39815

In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: fix stack overrun when loading vlenb The userspace load can put up to 2048 bits into an xlen bit stack buffer.

MEDIUM 5.5EPSS 0.15%

Does this matter?

Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own.

Description

In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: fix stack overrun when loading vlenb The userspace load can put up to 2048 bits into an xlen bit stack buffer. We want only xlen bits, so check the size beforehand.

CVSS 3.1: 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.15% probability · 5th percentile
CISA KEV: Not listed
Affected: linux/linux kernel
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

References

https://git.kernel.org/stable/c/6d28659b692a0212f360f8bd8a58712b339f9aacPatch
https://git.kernel.org/stable/c/799766208f09f95677a9ab111b93872d414fbad7Patch
https://git.kernel.org/stable/c/c76bf8359188a11f8fd790e5bbd6077894a245ccPatch

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.