CVE-2026-98705Hinoki check available

Path-limit bypass via uncharged proxy-path removal

Published Oct 18, 2026 · Updated Oct 18, 2026

Quota-accounting errors in Linux mac80211 allow attackers to exceed the mesh path limit through repeated proxy-path removal. In net/mac80211/mesh_pathtbl.c, mpp_path_add() installs proxy paths without charging the shared counter, but mesh_path_free_rcu() decrements it when those paths expire or are removed, allowing subsequent mesh_path_add() calls past the 1024-entry budget. Exposure requires mac80211 mesh operation and proxy-path churn; received address-extension mesh data reaches the affected addition function in simulation, but a crash or code execution is not demonstrated.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Quota-accounting errors in Linux mac80211 allow attackers to exceed the mesh path limit through repeated proxy-path removal. In net/mac80211/mesh_pathtbl.c, mpp_path_add() installs proxy paths without charging the shared counter, but mesh_path_free_rcu() decrements it when those paths expire or are removed, allowing subsequent mesh_path_add() calls past the 1024-entry budget. Exposure requires mac80211 mesh operation and proxy-path churn; received address-extension mesh data reaches the affected addition function in simulation, but a crash or code execution is not demonstrated.

The record

CVE
CVE-2026-98705
Published
Oct 18, 2026
Updated
Oct 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
adjacent
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=3.2
  2. Affected versionversion=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <3b75831ceee76d32bb8e7ddd241904f92f9b5407
  3. Affected versionversion=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <5a32409ed34a1868830899a5d2437f0b3bf3532c
  4. Affected versionversion=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <a5f35d4b112af1415ff06bd501c8cc26cc08aa8b
  5. Affected versionversion=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <df072db65fdaa34ad15e1d66fc06a53e3e97f778

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.2; version=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <3b75831ceee76d32bb8e7ddd241904f92f9b5407; version=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <5a32409ed34a1868830899a5d2437f0b3bf3532c; version=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <a5f35d4b112af1415ff06bd501c8cc26cc08aa8b; version=ece1a2e7e86078c8379937b546e32cb7f25fcb6c <df072db65fdaa34ad15e1d66fc06a53e3e97f778

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.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
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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