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CVE-2025-38435

riscv: vector: Fix context save/restore with xtheadvector

MEDIUM
5.5
CVSS Score
Published: July 25, 2025 at 02:32 PM UTC
Updated: August 5, 2026 at 12:44 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.14 ≤ v < 6.15.56.14 ≤ v < 6.166.16 rc16.16 rc26.16 rc3d863910eabaffc68eb28aaf476dd870fc3f7197d
Vendor states this is fixed in 4262bd0d9cc704ea1365ac00afc1272400c2cbef (fixed)
Vendor states this is fixed in dd5ceea8d50e9e108a10d1e0d89fa2c9ff442ca2 (fixed)
Vendor states this is fixed in 6.14 (unaffected)
Vendor states this is fixed in 6.15.5 (unaffected)
Vendor states this is fixed in 6.16 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4262bd0d9cc704ea1365ac00afc1272400c2cbef
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/dd5ceea8d50e9e108a10d1e0d89fa2c9ff442ca2

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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