CVE-2025-37875

Kdump hang via uncleared PTM trigger

Published May 9, 2025 · Updated May 11, 2026

Denial of service in the Linux kernel igc driver allows local users to hang kdump on systems with a PTM-capable Intel NIC. The driver leaves the PTM trigger enabled and clears the status valid bit during a transaction, leaving a reset NIC unable to handle register access. Reaching the kdump hang requires an igc-managed NIC with PTM support and a system crash while the trigger remains enabled; ordinary failed PTM transactions instead time out.

CVSS severity5.5
Medium
EPSS probability0.27%
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 igc driver allows local users to hang kdump on systems with a PTM-capable Intel NIC. The driver leaves the PTM trigger enabled and clears the status valid bit during a transaction, leaving a reset NIC unable to handle register access. Reaching the kdump hang requires an igc-managed NIC with PTM support and a system crash while the trigger remains enabled; ordinary failed PTM transactions instead time out.

The record

CVE
CVE-2025-37875
Published
May 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=5.15
  2. Affected versionversion=a90ec84837325df4b9a6798c2cc0df202b5680bd <0c03e4fbe1321697d9d04587e21e416705e1b19f
  3. Affected versionversion=a90ec84837325df4b9a6798c2cc0df202b5680bd <16194ca3f3b4448a062650c869a7b3b206c6f5d3
  4. Affected versionversion=a90ec84837325df4b9a6798c2cc0df202b5680bd <31959e06143692f7e02b8eef7d7d6ac645637906
  5. Affected versionversion=a90ec84837325df4b9a6798c2cc0df202b5680bd <8e404ad95d2c10c261e2ef6992c7c12dde03df0e
  6. Affected versionversion=a90ec84837325df4b9a6798c2cc0df202b5680bd <c1f174edaccc5a00f8e218c42a0aa9156efd5f76
  7. Affected versionversion=a90ec84837325df4b9a6798c2cc0df202b5680bd <f3516229cd12dcd45f23ed01adab17e8772b1bd5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=a90ec84837325df4b9a6798c2cc0df202b5680bd <0c03e4fbe1321697d9d04587e21e416705e1b19f; version=a90ec84837325df4b9a6798c2cc0df202b5680bd <16194ca3f3b4448a062650c869a7b3b206c6f5d3; version=a90ec84837325df4b9a6798c2cc0df202b5680bd <31959e06143692f7e02b8eef7d7d6ac645637906; version=a90ec84837325df4b9a6798c2cc0df202b5680bd <8e404ad95d2c10c261e2ef6992c7c12dde03df0e; version=a90ec84837325df4b9a6798c2cc0df202b5680bd <c1f174edaccc5a00f8e218c42a0aa9156efd5f76; version=a90ec84837325df4b9a6798c2cc0df202b5680bd <f3516229cd12dcd45f23ed01adab17e8772b1bd5

Published CVSS scores

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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