CVE-2026-98029Hinoki check available

Local kernel crash via undersized ntuple buffer

Published Sep 25, 2026 · Updated Sep 25, 2026

Out-of-bounds write in Linux 6.8 allows local users to crash the kernel through an undersized NFP ntuple rule-location request. nfp_net_get_fs_loc writes every flow-steering entry into rule_locs without honoring the caller-supplied rule_cnt allocation limit; a zero count leaves a null destination. An administrator must first install NFP flow-steering rules, after which an unprivileged local user can corrupt kernel memory or trigger a null-pointer crash.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds write in Linux 6.8 allows local users to crash the kernel through an undersized NFP ntuple rule-location request. nfp_net_get_fs_loc writes every flow-steering entry into rule_locs without honoring the caller-supplied rule_cnt allocation limit; a zero count leaves a null destination. An administrator must first install NFP flow-steering rules, after which an unprivileged local user can corrupt kernel memory or trigger a null-pointer crash.

The record

CVE
CVE-2026-98029
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

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=6.8
  2. Affected versionversion=9eb03bb1c035ff6e2c3a34046419446588253dda <82812583b9c69c241da6da4186f14e9df2516488
  3. Affected versionversion=9eb03bb1c035ff6e2c3a34046419446588253dda <a7e023c63e855761c1426cee8d17c2bca32aa339
  4. Affected versionversion=9eb03bb1c035ff6e2c3a34046419446588253dda <ecebfdaab72a504c10f4907bd00fc3b705ec3b12
  5. Affected versionversion=9eb03bb1c035ff6e2c3a34046419446588253dda <f1986bf87b0709c95126fe196cf39e5b8c8453a1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=9eb03bb1c035ff6e2c3a34046419446588253dda <82812583b9c69c241da6da4186f14e9df2516488; version=9eb03bb1c035ff6e2c3a34046419446588253dda <a7e023c63e855761c1426cee8d17c2bca32aa339; version=9eb03bb1c035ff6e2c3a34046419446588253dda <ecebfdaab72a504c10f4907bd00fc3b705ec3b12; version=9eb03bb1c035ff6e2c3a34046419446588253dda <f1986bf87b0709c95126fe196cf39e5b8c8453a1

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

T1499.004Endpoint Denial of Service: Application 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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