CVE-2026-98068Network attack vector

RDS connection denial of service via teardown race

Published Sep 25, 2026 · Updated Sep 25, 2026

Race condition in the Linux kernel RDS subsystem allows context-dependent attackers to wedge an RDS/TCP path and peer send path. rds_conn_shutdown() can consume RDS_CONN_ERROR from a concurrent drop after rds_tcp_accept_one() attaches a new socket, causing the queued cleanup pass to see RDS_CONN_DOWN and do nothing. Exploitation requires a precisely timed FIN or administrative reset during connection acceptance; the orphaned socket remains established with callbacks armed and an unread receive queue until another drop occurs.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel RDS subsystem allows context-dependent attackers to wedge an RDS/TCP path and peer send path. rds_conn_shutdown() can consume RDS_CONN_ERROR from a concurrent drop after rds_tcp_accept_one() attaches a new socket, causing the queued cleanup pass to see RDS_CONN_DOWN and do nothing. Exploitation requires a precisely timed FIN or administrative reset during connection acceptance; the orphaned socket remains established with callbacks armed and an unread receive queue until another drop occurs.

The record

CVE
CVE-2026-98068
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=4.12
  2. Affected versionversion=e97656d03ca0cea888a0b9d382abce8233771f31 <260c6308fe2e19ad519389d44d582e292aecc3af
  3. Affected versionversion=e97656d03ca0cea888a0b9d382abce8233771f31 <2941561395066be856a53626d4ca973dd9c982b2
  4. Affected versionversion=e97656d03ca0cea888a0b9d382abce8233771f31 <4cb9b6d3d31a2dbaa5469981c2c4c03e9acc7aca
  5. Affected versionversion=e97656d03ca0cea888a0b9d382abce8233771f31 <bd1cb197a07111ca8d4f4c21411c56a3c85a9797

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=e97656d03ca0cea888a0b9d382abce8233771f31 <260c6308fe2e19ad519389d44d582e292aecc3af; version=e97656d03ca0cea888a0b9d382abce8233771f31 <2941561395066be856a53626d4ca973dd9c982b2; version=e97656d03ca0cea888a0b9d382abce8233771f31 <4cb9b6d3d31a2dbaa5469981c2c4c03e9acc7aca; version=e97656d03ca0cea888a0b9d382abce8233771f31 <bd1cb197a07111ca8d4f4c21411c56a3c85a9797

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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