What is CVE-2025-37877?

CVE-2025-37877 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.12 onward and patched in 6.12.26, 6.14.5 and 6.15. CVE-2025-37877 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-37877?

CVE-2025-37877 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-2025-37877?

Yes, CVE-2025-37877 has been patched. Fixed versions include 6.12.26, 6.14.5 and 6.15. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-37877 actively exploited?

CVE-2025-37877 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-37877

Medium

In the Linux kernel, the following vulnerability has been resolved: iommu: Clear iommu-dma ops on cleanup If iommu_device_register() encounters an error, it can end up tearing down already-configured groups and default domains, however this currently still leaves devices hooked up to iommu-dma (and even historically the behaviour in this area was at best inconsistent across architectures/drivers...) Although in the case that an IOMMU is present whose driver has failed to probe, users cannot necessarily expect DMA to work anyway, it's still arguable that we should do our best to put things back as if the IOMMU driver was never there at all, and certainly the potential for crashing in iommu-dma itself is undesirable. Make sure we clean up the dev->dma_iommu flag along with everything else.

Package Linux Kernel

Published 2025-05-09

Last modified 2025-11-12

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 6.12 and later are affected. Fixed in 6.12.26, 6.14.5, 6.15 and their respective stable series.

Affected from

≥ 6.12

Fixed in

✓ 6.12.26 6.12.x ✓ 6.14.5 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-37877 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/104a84276821aed0ed241ce0d82d6c3267e3fcb8
Patch
Kernel patch commit
https://git.kernel.org/stable/c/280e5a30100578106a4305ce0118e0aa9b866f12
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b14d98641312d972bb3f38e82eddf92898522389
Patch

Details

CVE ID CVE-2025-37877

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-05-09

Modified 2025-11-12

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-37877?

CVE-2025-37877 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.26, 6.14.5 and 6.15. CVE-2025-37877 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-37877?

CVE-2025-37877 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-2025-37877?

Yes — CVE-2025-37877 has been patched. Fixed versions include 6.12.26, 6.14.5 and 6.15. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-37877 actively exploited?

No — CVE-2025-37877 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.