CVE-2026-72469

Kernel memory corruption via unmatched endpoint release

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in Linux xprtrdma allows attackers to corrupt kernel memory through an RDMA address-change event during connection setup. rpcrdma_cm_event_handler releases an endpoint without a matching reference when ADDR_CHANGE precedes ESTABLISHED, so teardown frees the endpoint while rpcrdma_xprt_disconnect still holds it. Reachability requires the pre-establishment event sequence; the resulting stale pointer exposes kernel memory integrity and system availability.

CVSS severity8.8
High
EPSS probability0.32%
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 Linux xprtrdma allows attackers to corrupt kernel memory through an RDMA address-change event during connection setup. rpcrdma_cm_event_handler releases an endpoint without a matching reference when ADDR_CHANGE precedes ESTABLISHED, so teardown frees the endpoint while rpcrdma_xprt_disconnect still holds it. Reachability requires the pre-establishment event sequence; the resulting stale pointer exposes kernel memory integrity and system availability.

The record

CVE
CVE-2026-72469
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-911
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=2acc5cae292355f5f18ad377a2a966e7f03c8fec <af9b65b29af341932625c4283dc7a23cdb62688a
  2. Affected versionversion=2acc5cae292355f5f18ad377a2a966e7f03c8fec <cfd1bab66b042da7a778786685125656c695931b
  3. Affected versionversion=2acc5cae292355f5f18ad377a2a966e7f03c8fec <d0479c2b12974aa188b10d221a5770126b118b6d
  4. Affected versionversion=2acc5cae292355f5f18ad377a2a966e7f03c8fec <ffc07790539736a5d029f6a3c966b46c529f93a8
  5. Affected versionversion=2fcbf07a4f23174a45e015b62a8e42ddbc2e53ef
  6. Affected versionversion=5.7.9 <5.8
  7. Affected versionversion=5.8

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2acc5cae292355f5f18ad377a2a966e7f03c8fec <af9b65b29af341932625c4283dc7a23cdb62688a; version=2acc5cae292355f5f18ad377a2a966e7f03c8fec <cfd1bab66b042da7a778786685125656c695931b; version=2acc5cae292355f5f18ad377a2a966e7f03c8fec <d0479c2b12974aa188b10d221a5770126b118b6d; version=2acc5cae292355f5f18ad377a2a966e7f03c8fec <ffc07790539736a5d029f6a3c966b46c529f93a8; version=2fcbf07a4f23174a45e015b62a8e42ddbc2e53ef; version=5.7.9 <5.8; version=5.8

Published CVSS scores

8.8Linux CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
5.9Amazon LinuxCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-911Improper Update of Reference Count

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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