What is CVE-2025-71203?

CVE-2025-71203 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10, affecting Linux kernel versions from 6.4 onward and patched in 6.6.130, 6.12.70, 6.18.10 and others. CVE-2025-71203 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-71203?

CVE-2025-71203 has a CVSS score of 7.0 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2025-71203?

Yes, CVE-2025-71203 has been patched. Fixed versions include 6.6.130, 6.12.70, 6.18.10 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-71203 actively exploited?

CVE-2025-71203 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-71203

High

In the Linux kernel, the following vulnerability has been resolved: riscv: Sanitize syscall table indexing under speculation The syscall number is a user-controlled value used to index into the syscall table. Use array_index_nospec() to clamp this value after the bounds check to prevent speculative out-of-bounds access and subsequent data leakage via cache side channels.

Package Linux Kernel

Published 2026-02-14

Last modified 2026-03-25

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.0

out of 10

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-129

CVE-2025-71203 is classified as CWE-129

See CWE-129 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.4 and later are affected. Fixed in 6.6.130, 6.12.70, 6.18.10, 6.19 and their respective stable series.

Affected from

≥ 6.4

Fixed in

✓ 6.6.130 6.6.x ✓ 6.12.70 6.12.x ✓ 6.18.10 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2025-71203 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/25fd7ee7bf58ac3ec7be3c9f82ceff153451946c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/33743ec6679aa364ee19d1afbaa50593e9e6e443
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8b44e753795107a22ba31495686e83f4aca48f36
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2025-71203

Severity High

CVSS score 7.0 / 10

CVSS version 3.1

Published 2026-02-14

Modified 2026-03-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-71203?

CVE-2025-71203 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10 . It affects Linux kernel versions from 6.4 onward and has been patched in 6.6.130, 6.12.70, 6.18.10 and others. CVE-2025-71203 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-71203?

CVE-2025-71203 has a CVSS score of 7.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2025-71203?

Yes — CVE-2025-71203 has been patched. Fixed versions include 6.6.130, 6.12.70, 6.18.10 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-71203 actively exploited?

No — CVE-2025-71203 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.