CVE-2026-98235Hinoki check available

Persistent traffic-control actions via leaked batch references

Published Oct 6, 2026 · Updated Oct 6, 2026

Reference leak in Linux kernel traffic-control action deletion from 6.8 allows local users to leave actions undeleted through batched RTM_DELACTION requests. The tcf_action_put_many() cleanup stops at the first cleared array slot after a bound action blocks deletion, retaining references on later actions. Triggering the flaw requires local traffic-control configuration access; a later deletion can report success while an unbound action remains in the IDR.

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

What happened

Reference leak in Linux kernel traffic-control action deletion from 6.8 allows local users to leave actions undeleted through batched RTM_DELACTION requests. The tcf_action_put_many() cleanup stops at the first cleared array slot after a bound action blocks deletion, retaining references on later actions. Triggering the flaw requires local traffic-control configuration access; a later deletion can report success while an unbound action remains in the IDR.

The record

CVE
CVE-2026-98235
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 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=6.8
  2. Affected versionversion=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <1be63e4579af408d596f0f3165faf1a880631d3b
  3. Affected versionversion=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <57b477e46ef2df3483f3488cc713c61c4b384aab
  4. Affected versionversion=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <6e05e46fa821a5c1b281355f1f622ac76cb6080a
  5. Affected versionversion=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <9eaba16f1b6ee19b249e6afd82c27f958d441458

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <1be63e4579af408d596f0f3165faf1a880631d3b; version=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <57b477e46ef2df3483f3488cc713c61c4b384aab; version=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <6e05e46fa821a5c1b281355f1f622ac76cb6080a; version=a0e947c9ccffe47d45aca793d9e7fe4f4494e381 <9eaba16f1b6ee19b249e6afd82c27f958d441458

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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