What is CVE-2025-37798?

CVE-2025-37798 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 3.5 onward and patched in 5.4.297, 5.10.241, 5.15.190 and others. CVE-2025-37798 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-37798?

CVE-2025-37798 has a CVSS score of 7.8 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:H/A:H.

Is there a patch available for CVE-2025-37798?

Yes, CVE-2025-37798 has been patched. Fixed versions include 5.4.297, 5.10.241, 5.15.190 and others. If you are running Linux kernel 3.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-37798 actively exploited?

CVE-2025-37798 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-37798

High

In the Linux kernel, the following vulnerability has been resolved: codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog() After making all ->qlen_notify() callbacks idempotent, now it is safe to remove the check of qlen!=0 from both fq_codel_dequeue() and codel_qdisc_dequeue().

Package Linux Kernel

Published 2025-05-02

Last modified 2025-11-06

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 3.5 and later are affected. Fixed in 5.4.297, 5.10.241, 5.15.190, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3, 6.15 and their respective stable series.

Affected from

≥ 3.5

Fixed in

✓ 5.4.297 5.4.x ✓ 5.10.241 5.10.x ✓ 5.15.190 5.15.x ✓ 6.1.135 6.1.x ✓ 6.6.88 6.6.x ✓ 6.12.24 6.12.x ✓ 6.13.12 6.13.x ✓ 6.14.3 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-37798 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Issue Tracking Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

Issue Tracking Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/2f9761a94bae33d26e6a81b31b36e7d776d93dc1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/342debc12183b51773b3345ba267e9263bdfaaef
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4d55144b12e742404bb3f8fee6038bafbf45619d
Patch

9 patch commits total View all on NVD

Details

CVE ID CVE-2025-37798

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-05-02

Modified 2025-11-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-37798?

CVE-2025-37798 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 3.5 onward and has been patched in 5.4.297, 5.10.241, 5.15.190 and others. CVE-2025-37798 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-37798?

CVE-2025-37798 has a CVSS score of 7.8 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:H/A:H.
Is there a patch available for CVE-2025-37798?

Yes — CVE-2025-37798 has been patched. Fixed versions include 5.4.297, 5.10.241, 5.15.190 and others. If you are running Linux kernel 3.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-37798 actively exploited?

No — CVE-2025-37798 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.