CVE-2025-38048

Temporary interrupt suppression via event_triggered race

Published Jun 18, 2025 · Updated May 11, 2026

Race condition in the virtio_ring component of Linux allows local users to temporarily suppress virtio interrupt notifications during event-index use. virtqueue_enable_cb_delayed writes event_triggered as false while virtqueue_disable_cb_split or virtqueue_disable_cb_packed reads the shared hint concurrently without synchronization. Local low-privileged access and event-index operation are required; the documented effect is temporary notification suppression, not data exposure or modification.

CVSS severity4.7
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the virtio_ring component of Linux allows local users to temporarily suppress virtio interrupt notifications during event-index use. virtqueue_enable_cb_delayed writes event_triggered as false while virtqueue_disable_cb_split or virtqueue_disable_cb_packed reads the shared hint concurrently without synchronization. Local low-privileged access and event-index operation are required; the documented effect is temporary notification suppression, not data exposure or modification.

The record

CVE
CVE-2025-38048
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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=5.14
  2. Affected versionversion=8d622d21d24803408b256d96463eac4574dcf067 <02d2d6caee3abc9335cfca35f8eb4492173ae6f2
  3. Affected versionversion=8d622d21d24803408b256d96463eac4574dcf067 <2e2f925fe737576df2373931c95e1a2b66efdfef
  4. Affected versionversion=8d622d21d24803408b256d96463eac4574dcf067 <4ed8f0e808b3fcc71c5b8be7902d8738ed595b17
  5. Affected versionversion=8d622d21d24803408b256d96463eac4574dcf067 <b49b5132e4c7307599492aee1cdc6d89f7f2a7da
  6. Affected versionversion=8d622d21d24803408b256d96463eac4574dcf067 <b6d6419548286b2b9d2b90df824d3cab797f6ae8
  7. Affected versionversion=8d622d21d24803408b256d96463eac4574dcf067 <b730cb109633c455ce8a7cd6934986c6a16d88d8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=8d622d21d24803408b256d96463eac4574dcf067 <02d2d6caee3abc9335cfca35f8eb4492173ae6f2; version=8d622d21d24803408b256d96463eac4574dcf067 <2e2f925fe737576df2373931c95e1a2b66efdfef; version=8d622d21d24803408b256d96463eac4574dcf067 <4ed8f0e808b3fcc71c5b8be7902d8738ed595b17; version=8d622d21d24803408b256d96463eac4574dcf067 <b49b5132e4c7307599492aee1cdc6d89f7f2a7da; version=8d622d21d24803408b256d96463eac4574dcf067 <b6d6419548286b2b9d2b90df824d3cab797f6ae8; version=8d622d21d24803408b256d96463eac4574dcf067 <b730cb109633c455ce8a7cd6934986c6a16d88d8

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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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