CVE-2026-98010Hinoki check available

Local service hang via unbounded deficit refill

Published Sep 25, 2026 · Updated Sep 25, 2026

Denial of service in Linux kernel DRR scheduling allows local users to hang packet scheduling via a crafted quantum and size table. drr_change_class() accepts a quantum as low as one or derives an unfloored psched_mtu(), letting drr_dequeue() spin while refilling a roughly 2 GiB packet deficit under the qdisc lock. Exploitation requires CONFIG_NET_SCH_DRR and namespace-local CAP_NET_ADMIN; the resulting lockup interrupts packet scheduling on the host.

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

Denial of service in Linux kernel DRR scheduling allows local users to hang packet scheduling via a crafted quantum and size table. drr_change_class() accepts a quantum as low as one or derives an unfloored psched_mtu(), letting drr_dequeue() spin while refilling a roughly 2 GiB packet deficit under the qdisc lock. Exploitation requires CONFIG_NET_SCH_DRR and namespace-local CAP_NET_ADMIN; the resulting lockup interrupts packet scheduling on the host.

The record

CVE
CVE-2026-98010
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

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?

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  1. Affected versionversion=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <8382abec0f1568d0a5590d75a3df92f23fcf5196
  2. Affected versionversion=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b
  3. Affected versionversion=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <d43cded350fe1218493ad3d37a276aff14108ae6
  4. Affected versionversion=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <dc8b374214ef5bba4882bbd95b361e42555cfc0d
  5. Affected versionversion=2.6.29

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <8382abec0f1568d0a5590d75a3df92f23fcf5196; version=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b; version=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <d43cded350fe1218493ad3d37a276aff14108ae6; version=13d2a1d2b032de08d7dcab6a1edcd47802681f96 <dc8b374214ef5bba4882bbd95b361e42555cfc0d; version=2.6.29

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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