CVE-2025-38435

riscv: vector: Fix context save/restore with xtheadvector

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved: riscv: vector: Fix context save/restore with xtheadvector Previously only v0-v7 were correctly saved/restored,
and the context of v8-v31 are damanged.
Correctly save/restore v8-v31 to avoid breaking userspace.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: riscv: vector: Se corrige el guardado/restauración de contexto con xtheadvector. Anteriormente, solo se guardaban/restauraban correctamente las versiones v0 a v7, y el contexto de las versiones v8 a v31 estaba dañado. Guarde/restaure correctamente las versiones v8 a v31 para evitar la interrupción del espacio de usuario.

In the Linux kernel, the following vulnerability has been resolved: riscv: vector: Fix context...

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-04-16 CVE Reserved
2025-07-25 CVE Published
2025-07-28 CVE Updated
2025-07-31 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source
https://git.kernel.org/stable/c/d863910eabaffc68eb28aaf476dd870fc3f7197d	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/dd5ceea8d50e9e108a10d1e0d89fa2c9ff442ca2	2025-07-06
https://git.kernel.org/stable/c/4262bd0d9cc704ea1365ac00afc1272400c2cbef	2025-06-12

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.14 < 6.15.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.14 < 6.15.5"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.14 < 6.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.14 < 6.16"		en		Affected