CVE-2025-38282

Local service interruption via transient kernfs warning

Published Jul 10, 2025 · Updated May 11, 2026

Reachable warning in the Linux kernel allows local users to crash the system when panic_on_warn is enabled during a kernfs removal race. kernfs_should_drain_open_files() treats a transient active-reference count between unbreak and release operations as an invalid draining state. Reaching that narrow timing emits WARN; only systems configured to panic on warnings convert the false positive into a kernel panic and service interruption.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable warning in the Linux kernel allows local users to crash the system when panic_on_warn is enabled during a kernfs removal race. kernfs_should_drain_open_files() treats a transient active-reference count between unbreak and release operations as an invalid draining state. Reaching that narrow timing emits WARN; only systems configured to panic on warnings convert the false positive into a kernel panic and service interruption.

The record

CVE
CVE-2025-38282
Published
Jul 10, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=6.1
  2. Affected versionversion=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <071d8e4c2a3b0999a9b822e2eb8854784a350f8a
  3. Affected versionversion=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <2d6a67c2b3b87808a347dc1047b520a9dd177a4f
  4. Affected versionversion=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <6bfb154f95d5f0ab7ed056f23aba8c1a94cb3927
  5. Affected versionversion=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <6c81f1c7812c61f187bed1b938f1d2e391d503ab
  6. Affected versionversion=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <72275c888f8962b406ee9c6885c79bf68cca5a63

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1; version=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <071d8e4c2a3b0999a9b822e2eb8854784a350f8a; version=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <2d6a67c2b3b87808a347dc1047b520a9dd177a4f; version=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <6bfb154f95d5f0ab7ed056f23aba8c1a94cb3927; version=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <6c81f1c7812c61f187bed1b938f1d2e391d503ab; version=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <72275c888f8962b406ee9c6885c79bf68cca5a63

Published CVSS scores

5.5NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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.

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Technologies

Your stack

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Your stack

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