What is CVE-2025-21905?

CVE-2025-21905 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 5.2 onward and patched in 5.4.291, 5.10.235, 5.15.179 and others. CVE-2025-21905 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-21905?

CVE-2025-21905 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2025-21905?

Yes, CVE-2025-21905 has been patched. Fixed versions include 5.4.291, 5.10.235, 5.15.179 and others. If you are running Linux kernel 5.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-21905 actively exploited?

CVE-2025-21905 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2025-21905

High

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: limit printed string from FW file There's no guarantee here that the file is always with a NUL-termination, so reading the string may read beyond the end of the TLV. If that's the last TLV in the file, it can perhaps even read beyond the end of the file buffer. Fix that by limiting the print format to the size of the buffer we have.

Package Linux Kernel

Published 2025-04-01

Last modified 2025-11-03

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2025-21905 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.2 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

≥ 5.2

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/38f0d398b6d7640d223db69df022c4a232f24774

Patch
Kernel Git
https://git.kernel.org/stable/c/47616b82f2d42ea2060334746fed9a2988d845c9

Patch
Kernel Git
https://git.kernel.org/stable/c/59cdda202829d1d6a095d233386870a59aff986f

Patch
Kernel Git
https://git.kernel.org/stable/c/88ed69f924638c7503644e1f8eed1e976f3ffa7a

Patch
Kernel Git
https://git.kernel.org/stable/c/b02f8d5a71c8571ccf77f285737c566db73ef5e5

Patch

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2025-21905

Severity High

CVSS score 7.1 / 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-2025-21905?

CVE-2025-21905 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 5.2 onward and has been patched in 5.4.291, 5.10.235, 5.15.179 and others. CVE-2025-21905 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-21905?

CVE-2025-21905 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2025-21905?

Yes. CVE-2025-21905 has been patched. Fixed versions include 5.4.291, 5.10.235, 5.15.179 and others. If you are running Linux kernel 5.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-21905 actively exploited?

No. CVE-2025-21905 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.