CVE-2026-98098Hinoki check available

Kernel crash via exhausted TIPC publication table

Published Sep 25, 2026 · Updated Sep 25, 2026

NULL pointer dereference in Linux TIPC allows local users to crash the kernel by exhausting the local publication table. named_distribute() passes the empty publication queue left after tipc_nametbl_publish() reaches TIPC_MAX_PUBL to skb_peek_tail(), after which buf_msg() dereferences NULL. Access to TIPC sockets and enough bindings to reach 65,535 local publications is required; the resulting null dereference panics the kernel.

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

NULL pointer dereference in Linux TIPC allows local users to crash the kernel by exhausting the local publication table. named_distribute() passes the empty publication queue left after tipc_nametbl_publish() reaches TIPC_MAX_PUBL to skb_peek_tail(), after which buf_msg() dereferences NULL. Access to TIPC sockets and enough bindings to reach 65,535 local publications is required; the resulting null dereference panics the kernel.

The record

CVE
CVE-2026-98098
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.15
  2. Affected versionversion=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <68619f965329d2f7b113a3d5811aa23198f39105
  3. Affected versionversion=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <ad805326d874062f8bc72a94884f86046148cde3
  4. Affected versionversion=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <b3b76e9f4f2476f1135b2ba7743a821db4a0df4b
  5. Affected versionversion=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <d0d82f1214f321143c5dbc2e48e4a4e6c4226895

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.15; version=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <68619f965329d2f7b113a3d5811aa23198f39105; version=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <ad805326d874062f8bc72a94884f86046148cde3; version=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <b3b76e9f4f2476f1135b2ba7743a821db4a0df4b; version=a5e7ac5ce134d8f72f59631011fafa7bbf7ca174 <d0d82f1214f321143c5dbc2e48e4a4e6c4226895

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

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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