What is CVE-2025-40252?

CVE-2025-40252 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10, affecting Linux kernel versions from 4.6 onward and patched in 5.15.197, 6.1.159, 6.6.118 and others. CVE-2025-40252 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-40252?

CVE-2025-40252 has a CVSS score of 9.8 out of 10, rated Critical severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2025-40252?

Yes, CVE-2025-40252 has been patched. Fixed versions include 5.15.197, 6.1.159, 6.6.118 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-2025-40252 actively exploited?

CVE-2025-40252 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-40252

Critical

In the Linux kernel, the following vulnerability has been resolved: net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont() and qede_tpa_end() The loops in 'qede_tpa_cont()' and 'qede_tpa_end()', iterate over 'cqe->len_list[]' using only a zero-length terminator as the stopping condition. If the terminator was missing or malformed, the loop could run past the end of the fixed-size array. Add an explicit bound check using ARRAY_SIZE() in both loops to prevent a potential out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Package Linux Kernel

Published 2025-12-04

Last modified 2026-07-30

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

9.8

out of 10

Critical

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 4.6 and later are affected. Fixed in 5.15.197, 6.1.159, 6.6.118, 6.12.60, 6.17.10, 6.18 and their respective stable series.

Affected from

≥ 4.6

Fixed in

✓ 5.15.197 5.15.x ✓ 6.1.159 6.1.x ✓ 6.6.118 6.6.x ✓ 6.12.60 6.12.x ✓ 6.17.10 6.17.x ✓ 6.18

References

7 total

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2025-40252

Severity Critical

CVSS score 9.8 / 10

CVSS version 3.1

Published 2025-12-04

Modified 2026-07-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-40252?

CVE-2025-40252 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10 . It affects Linux kernel versions from 4.6 onward and has been patched in 5.15.197, 6.1.159, 6.6.118 and others. CVE-2025-40252 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-40252?

CVE-2025-40252 has a CVSS score of 9.8 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2025-40252?

Yes. CVE-2025-40252 has been patched. Fixed versions include 5.15.197, 6.1.159, 6.6.118 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-2025-40252 actively exploited?

No. CVE-2025-40252 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.