What is CVE-2025-21935?

CVE-2025-21935 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.6 onward and patched in 5.4.291, 5.10.235, 5.15.179 and others. CVE-2025-21935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-21935?

CVE-2025-21935 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-21935?

Yes, CVE-2025-21935 has been patched. Fixed versions include 5.4.291, 5.10.235, 5.15.179 and others. If you are running Linux kernel 4.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-21935 actively exploited?

CVE-2025-21935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-21935

Medium

In the Linux kernel, the following vulnerability has been resolved: rapidio: add check for rio_add_net() in rio_scan_alloc_net() The return value of rio_add_net() should be checked. If it fails, put_device() should be called to free the memory and give up the reference initialized in rio_add_net().

Package Linux Kernel

Published 2025-04-01

Last modified 2025-11-03

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 4.6 and later are affected. Fixed in 5.4.291, 5.10.235, 5.15.179, 6.1.131, 6.6.83, 6.12.19, 6.13.7, 6.14 and their respective stable series.

Affected from

≥ 4.6

Fixed in

✓ 5.4.291 5.4.x ✓ 5.10.235 5.10.x ✓ 5.15.179 5.15.x ✓ 6.1.131 6.1.x ✓ 6.6.83 6.6.x ✓ 6.12.19 6.12.x ✓ 6.13.7 6.13.x ✓ 6.14

References

10 total

Kernel Git
https://git.kernel.org/stable/c/181d4daaefb3bceeb2f2635ba9f3781eeda9e550

Patch
Kernel Git
https://git.kernel.org/stable/c/4f3509cfcc02e9d757f2714bb7dbbeec35de6fa7

Patch
Kernel Git
https://git.kernel.org/stable/c/6d22953c4a183d0b7fdf34d68c5debd16da6edc5

Patch
Kernel Git
https://git.kernel.org/stable/c/a0d069ccc475abaaa79c6368ee27fc0b5912bea8

Patch
Kernel Git
https://git.kernel.org/stable/c/ad82be4298a89a9ae46f07128bdf3d8614bce745

Patch

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2025-21935

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-04-01

Modified 2025-11-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-21935?

CVE-2025-21935 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.6 onward and has been patched in 5.4.291, 5.10.235, 5.15.179 and others. CVE-2025-21935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-21935?

CVE-2025-21935 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-21935?

Yes. CVE-2025-21935 has been patched. Fixed versions include 5.4.291, 5.10.235, 5.15.179 and others. If you are running Linux kernel 4.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-21935 actively exploited?

No. CVE-2025-21935 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.