CVE-2025-22088Network attack vector

Unauthenticated kernel corruption via dangling socket write

Published Apr 16, 2025 · Updated Aug 5, 2026

Use-after-free in the Linux kernel erdma connection manager allows remote attackers to corrupt kernel memory via RDMA TCP connections. In erdma_accept_newconn(), an error path calls erdma_cep_put(new_cep), freeing the connection endpoint, then writes NULL to new_cep->sock. The path is reachable before authentication when an erdma RDMA listener accepts a TCP connection; the dangling write can panic the kernel or corrupt a reallocated kernel object.

CVSS severity9.8
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel erdma connection manager allows remote attackers to corrupt kernel memory via RDMA TCP connections. In erdma_accept_newconn(), an error path calls erdma_cep_put(new_cep), freeing the connection endpoint, then writes NULL to new_cep->sock. The path is reachable before authentication when an erdma RDMA listener accepts a TCP connection; the dangling write can panic the kernel or corrupt a reallocated kernel object.

The record

CVE
CVE-2025-22088
Published
Apr 16, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.0
  2. Affected versionversion=920d93eac8b97778fef48f34f10e58ddf870fc2a <667a628ab67d359166799fad89b3c6909599558a
  3. Affected versionversion=920d93eac8b97778fef48f34f10e58ddf870fc2a <78411a133312ce7d8a3239c76a8fd85bca1cc10f
  4. Affected versionversion=920d93eac8b97778fef48f34f10e58ddf870fc2a <7aa6bb5276d9fec98deb05615a086eeb893854ad
  5. Affected versionversion=920d93eac8b97778fef48f34f10e58ddf870fc2a <83437689249e6a17b25e27712fbee292e42e7855
  6. Affected versionversion=920d93eac8b97778fef48f34f10e58ddf870fc2a <a114d25d584c14019d31dbf2163780c47415a187
  7. Affected versionversion=920d93eac8b97778fef48f34f10e58ddf870fc2a <bc1db4d8f1b0dc480d7d745a60a8cc94ce2badd4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=920d93eac8b97778fef48f34f10e58ddf870fc2a <667a628ab67d359166799fad89b3c6909599558a; version=920d93eac8b97778fef48f34f10e58ddf870fc2a <78411a133312ce7d8a3239c76a8fd85bca1cc10f; version=920d93eac8b97778fef48f34f10e58ddf870fc2a <7aa6bb5276d9fec98deb05615a086eeb893854ad; version=920d93eac8b97778fef48f34f10e58ddf870fc2a <83437689249e6a17b25e27712fbee292e42e7855; version=920d93eac8b97778fef48f34f10e58ddf870fc2a <a114d25d584c14019d31dbf2163780c47415a187; version=920d93eac8b97778fef48f34f10e58ddf870fc2a <bc1db4d8f1b0dc480d7d745a60a8cc94ce2badd4

Published CVSS scores

9.8LinuxCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1190Exploit Public-Facing Application

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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