CVE-2025-37877

Kernel crash via stale IOMMU DMA state

Published May 9, 2025 · Updated May 11, 2026

Denial of service in the Linux kernel 6.12 through 6.15-rc1 allows local users to crash the system after an IOMMU driver probe fails. The iommu_device_register() error path tears down configured groups and default domains, but iommu_deinit_device() does not clear dev->dma_iommu, so later DMA handling follows stale state. The reachable condition requires a present IOMMU whose driver fails to probe; the reported consequence is a kernel crash rather than data access or modification.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel 6.12 through 6.15-rc1 allows local users to crash the system after an IOMMU driver probe fails. The iommu_device_register() error path tears down configured groups and default domains, but iommu_deinit_device() does not clear dev->dma_iommu, so later DMA handling follows stale state. The reachable condition requires a present IOMMU whose driver fails to probe; the reported consequence is a kernel crash rather than data access or modification.

The record

CVE
CVE-2025-37877
Published
May 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.12
  2. Affected versionversion=b5c58b2fdc427e7958412ecb2de2804a1f7c1572 <104a84276821aed0ed241ce0d82d6c3267e3fcb8
  3. Affected versionversion=b5c58b2fdc427e7958412ecb2de2804a1f7c1572 <280e5a30100578106a4305ce0118e0aa9b866f12
  4. Affected versionversion=b5c58b2fdc427e7958412ecb2de2804a1f7c1572 <b14d98641312d972bb3f38e82eddf92898522389

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12; version=b5c58b2fdc427e7958412ecb2de2804a1f7c1572 <104a84276821aed0ed241ce0d82d6c3267e3fcb8; version=b5c58b2fdc427e7958412ecb2de2804a1f7c1572 <280e5a30100578106a4305ce0118e0aa9b866f12; version=b5c58b2fdc427e7958412ecb2de2804a1f7c1572 <b14d98641312d972bb3f38e82eddf92898522389

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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