Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-97998: netfilter: nfnetlink_log: cope with concurrent instance destruction

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 0234d7ca0317be0a623300e1693cd794bbfdf8af, 042465e7d3d3127e21f04e42c1639e2518b98915, 1a7a8ac9a9f0ad0d410c901cb6f233833518844c; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0234d7ca0317be0a623300e1693cd794bbfdf8af, 042465e7d3d3127e21f04e42c1639e2518b98915, 1a7a8ac9a9f0ad0d410c901cb6f233833518844c; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: cope with concurrent instance destruction Instances are refcounted. However, only memory release happens on the 1 -> 0 transition; the unlink from hashes can occur with any refcount. Uncooperative userspace can force a situation where a queue is pending for destruction from netlink event while a different socket with same portid processes an UNBIND request. With right timing, this will unhash the instance again: Oops: general protection fault, [..] Call Trace: <TASK> nfulnl_recv_config+0x31a/0xd50 nfnetlink_rcv_msg+0x7c2/0xeb0

—No exploit Fix available
Published
Sep 25, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-97998

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.14affected
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before c5c89beaa628d6ac527c6eb2e01b2b52eb417f59affected · git
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before 042465e7d3d3127e21f04e42c1639e2518b98915affected · git
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before 291685fc8d2e4cf75ed3a23c810883653f407f46affected · git
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before 3161186a2ff81288e9a5f35daf1911153764ecaeaffected · git
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before 0234d7ca0317be0a623300e1693cd794bbfdf8afaffected · git
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before 1a7a8ac9a9f0ad0d410c901cb6f233833518844caffected · git
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before e2dd0f1f8c4e6334699ea6382e52f6da0c7e45ebaffected · git
    • 0597f2680d666a3bcf101ac0c771ba7e50016bbd and later · before 387d744fa7e499d2c3748a4e60e02ebb24e7fb16affected · git
    • before 2.6.14not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.7-17.2.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-97996Sep 25, 2026 · virtio: fix use-after-free in unregister_virtio_device()
    0Monitor
  • ← EarlierCVE-2026-97997Sep 25, 2026 · virtio_ring: fix stale descriptor flags after a failed packed add
    0Monitor
  • Later →CVE-2026-98000Sep 25, 2026 · hwmon: Fix potential UAF in pec_store
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0234d7ca0317be0a623300e1693cd794bbfdf8afVendor (CNA)
Linux Linux042465e7d3d3127e21f04e42c1639e2518b98915Vendor (CNA)
Linux Linux1a7a8ac9a9f0ad0d410c901cb6f233833518844cVendor (CNA)
Linux Linux291685fc8d2e4cf75ed3a23c810883653f407f46Vendor (CNA)
Linux Linux3161186a2ff81288e9a5f35daf1911153764ecaeVendor (CNA)
Linux Linux387d744fa7e499d2c3748a4e60e02ebb24e7fb16Vendor (CNA)
Linux Linuxc5c89beaa628d6ac527c6eb2e01b2b52eb417f59Vendor (CNA)
Linux Linuxe2dd0f1f8c4e6334699ea6382e52f6da0c7e45ebVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records