CVE-2026-98701

Mesh routing denial via leaked quota reservations

Published Oct 18, 2026 · Updated Oct 18, 2026

Quota exhaustion in Linux mac80211 allows attackers to block new mesh routes via repeated failed or duplicate path additions. The mesh_path_add() function retains its quota reservation when allocation or hash-table insertion fails or finds an existing destination. Exposure requires mesh operation and repeated unsuccessful additions; exhaustion prevents new routes rather than establishing a kernel crash, and attacker privileges and physical-radio exploitability remain undocumented.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Quota exhaustion in Linux mac80211 allows attackers to block new mesh routes via repeated failed or duplicate path additions. The mesh_path_add() function retains its quota reservation when allocation or hash-table insertion fails or finds an existing destination. Exposure requires mesh operation and repeated unsuccessful additions; exhaustion prevents new routes rather than establishing a kernel crash, and attacker privileges and physical-radio exploitability remain undocumented.

The record

CVE
CVE-2026-98701
Published
Oct 18, 2026
Updated
Oct 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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=3.10
  2. Affected versionversion=ae76eef027f75fadd8a8eda55ee07707f077aacb <56691ed9ef792f180e008a43294a4dc059fbeca2
  3. Affected versionversion=ae76eef027f75fadd8a8eda55ee07707f077aacb <7325a44474f20c1393a1c114c6811abce6ddfaf4
  4. Affected versionversion=ae76eef027f75fadd8a8eda55ee07707f077aacb <a59eca4557c7462aad1b160011013290a92de97d
  5. Affected versionversion=ae76eef027f75fadd8a8eda55ee07707f077aacb <a613c891906b558c10a4fa98ca29747b98e857cb

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=ae76eef027f75fadd8a8eda55ee07707f077aacb <56691ed9ef792f180e008a43294a4dc059fbeca2; version=ae76eef027f75fadd8a8eda55ee07707f077aacb <7325a44474f20c1393a1c114c6811abce6ddfaf4; version=ae76eef027f75fadd8a8eda55ee07707f077aacb <a59eca4557c7462aad1b160011013290a92de97d; version=ae76eef027f75fadd8a8eda55ee07707f077aacb <a613c891906b558c10a4fa98ca29747b98e857cb

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)
VectorUnavailable
PrivilegesUnavailable
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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