What is CVE-2025-37932?

CVE-2025-37932 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.14 onward and patched in 5.4.294, 5.10.241, 5.15.190 and others. CVE-2025-37932 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-37932?

CVE-2025-37932 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-2025-37932?

Yes, CVE-2025-37932 has been patched. Fixed versions include 5.4.294, 5.10.241, 5.15.190 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-37932 actively exploited?

CVE-2025-37932 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-37932

Medium

In the Linux kernel, the following vulnerability has been resolved: sch_htb: make htb_qlen_notify() idempotent htb_qlen_notify() always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like fq_codel_dequeue(). Let's make it idempotent to ease qdisc_tree_reduce_backlog() callers' life.

Package Linux Kernel

Published 2025-05-20

Last modified 2025-12-19

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 4.14 and later are affected. Fixed in 5.4.294, 5.10.241, 5.15.190, 6.1.138, 6.6.90, 6.12.28, 6.14.6, 6.15 and their respective stable series.

Affected from

≥ 4.14

Fixed in

✓ 5.4.294 5.4.x ✓ 5.10.241 5.10.x ✓ 5.15.190 5.15.x ✓ 6.1.138 6.1.x ✓ 6.6.90 6.6.x ✓ 6.12.28 6.12.x ✓ 6.14.6 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-37932 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/2025/08/msg00010.html

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

Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/0a188c0e197383683fd093ab1ea6ce9a5869a6ea
Patch
Kernel patch commit
https://git.kernel.org/stable/c/32ae12ce6a9f6bace186ca7335220ff59b6cc3cd
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5ba8b837b522d7051ef81bacf3d95383ff8edce5
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2025-37932

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-05-20

Modified 2025-12-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-37932?

CVE-2025-37932 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.14 onward and has been patched in 5.4.294, 5.10.241, 5.15.190 and others. CVE-2025-37932 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-37932?

CVE-2025-37932 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-2025-37932?

Yes — CVE-2025-37932 has been patched. Fixed versions include 5.4.294, 5.10.241, 5.15.190 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-37932 actively exploited?

No — CVE-2025-37932 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.