CVE-2026-97608

Unspecified impact via nf_log teardown race

Published Sep 25, 2026 · Updated Sep 25, 2026

Use-after-free in the Linux kernel allows local users to cause unspecified impact through an nf_log logger teardown race. The nf_log_syslog and nfnetlink_log exit paths unregister per-network operations before global logger backends, allowing a concurrent sysctl or netlink writer to restore a pointer that is freed when module exit completes. Reachability requires a rebind during backend removal; a later sysctl read or packet-log operation dereferences the stale pointer, while further consequences are not published.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel allows local users to cause unspecified impact through an nf_log logger teardown race. The nf_log_syslog and nfnetlink_log exit paths unregister per-network operations before global logger backends, allowing a concurrent sysctl or netlink writer to restore a pointer that is freed when module exit completes. Reachability requires a rebind during backend removal; a later sysctl read or packet-log operation dereferences the stale pointer, while further consequences are not published.

The record

CVE
CVE-2026-97608
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

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=3.10
  2. Affected versionversion=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <2c018cc4842c33f0c732962e2ab58635e8ae5823
  3. Affected versionversion=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <64803ba0a05791cf9ca874466480e4c4cadaf7ab
  4. Affected versionversion=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <dce24f3a146948595bb1b86347f31e20b4975daa
  5. Affected versionversion=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <eaec35fae8f2052c1878a5c7cc7699d8357d79f2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <2c018cc4842c33f0c732962e2ab58635e8ae5823; version=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <64803ba0a05791cf9ca874466480e4c4cadaf7ab; version=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <dce24f3a146948595bb1b86347f31e20b4975daa; version=5b023fc8d8e0997e0b7ea6506d243afd5478c96e <eaec35fae8f2052c1878a5c7cc7699d8357d79f2

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
Privilegesadmin
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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