CVE-2025-22053

Host hang via unsynchronized ibmveth pool writes

Published Apr 16, 2025 · Updated May 11, 2026

Improper locking in the Linux ibmveth driver allows local users to hang the host through concurrent sysfs pool writes. veth_pool_store lacks rtnl_mutex serialization with itself and ibmveth_open or ibmveth_close, permitting repeated napi_disable calls. Exploitation requires local access to writable ibmveth pool sysfs entries on a system using the IBM virtual Ethernet driver; the resulting deadlock blocks kernel tasks and interrupts host availability.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux ibmveth driver allows local users to hang the host through concurrent sysfs pool writes. veth_pool_store lacks rtnl_mutex serialization with itself and ibmveth_open or ibmveth_close, permitting repeated napi_disable calls. Exploitation requires local access to writable ibmveth pool sysfs entries on a system using the IBM virtual Ethernet driver; the resulting deadlock blocks kernel tasks and interrupts host availability.

The record

CVE
CVE-2025-22053
Published
Apr 16, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 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=2.6.18
  2. Affected versionversion=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <053f3ff67d7feefc75797863f3d84b47ad47086f
  3. Affected versionversion=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <0a2470e3ecde64fc7e3781dc474923193621ae67
  4. Affected versionversion=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <1e458c292f4c687dcf5aad32dd4836d03cd2191f
  5. Affected versionversion=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <86cc70f5c85dc09bf7f3e1eee380eefe73c90765
  6. Affected versionversion=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <8a88bb092f4208355880b9fdcc69d491aa297595

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.18; version=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <053f3ff67d7feefc75797863f3d84b47ad47086f; version=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <0a2470e3ecde64fc7e3781dc474923193621ae67; version=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <1e458c292f4c687dcf5aad32dd4836d03cd2191f; version=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <86cc70f5c85dc09bf7f3e1eee380eefe73c90765; version=860f242eb5340d0b0cfe243cb86b2a98f92e8b91 <8a88bb092f4208355880b9fdcc69d491aa297595

Published CVSS scores

4.4Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
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.

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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-667Improper Locking
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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