CVE-2025-39815
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedSep 16, 2025
First seenSep 16, 2025
How to fix
Update
- linux linux_kernel6.12.45, 6.16.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.8 ≤ v < 6.12.45, 6.13 ≤ v < 6.16.5, 6.17 | 6.12.45, 6.16.5 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.