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NVD / CVE Program· CNA Linux

CVE-2026-46324: netfilter: nf_tables: use list_del_rcu for netlink hooks

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0bd93ce4f3c35e845532184331d7917d7e562c80, 0f33e8ad6ac563ae2233dd7f75884e0ee010521d, 2405730fde96f7fa483a5862e323b681e0e09f54; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0bd93ce4f3c35e845532184331d7917d7e562c80, 0f33e8ad6ac563ae2233dd7f75884e0ee010521d, 2405730fde96f7fa483a5862e323b681e0e09f54; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes 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: nf_tables: use list_del_rcu for netlink hooks nft_netdev_unregister_hooks and __nft_unregister_flowtable_net_hooks need to use list_del_rcu(), this list can be walked by concurrent dumpers. Add a new helper and use it consistently.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Jun 9, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2026-46324

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

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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.

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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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.19.316 and later · before 4.20
  • linux linux kernel5.4.262 and later · before 5.5
  • linux linux kernel5.10.198 and later · before 5.11
  • linux linux kernel5.15.45 and later · before 5.16
  • linux linux kernel5.17.13 and later · before 5.18
  • linux linux kernel5.18.2 and later · before 6.18.33
  • linux linux kernel6.19 and later · before 7.0.10
  • linux linux kernel7.1

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

    • c73955a09408e7374d9abfd0e78ce3de9cda0635, b09e6ccf0d12f9356e8e3508d3e3dce126298538, 3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82, 9c413a8c8bb49cc16796371805ecb260e885bb2b, a3940dcf552f2393d1e8f263b386593f98abe829, 86c0154f4c3a56c5db8b9dd09e3ce885382c2c19, 5.19affected
    • f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 and later · before 6480ea533cedfbf79ea5a1f12c5f71d41484dd8aaffected · git
    • f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 and later · before 2405730fde96f7fa483a5862e323b681e0e09f54affected · git
    • f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 and later · before fe45e203527af8a2c0dc4c8a7b56c09c74b796c8affected · git
    • f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 and later · before 0bd93ce4f3c35e845532184331d7917d7e562c80affected · git
    • f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 and later · before 0f33e8ad6ac563ae2233dd7f75884e0ee010521daffected · git
    • f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 and later · before f3224ee463f8f6f6ced7dcdf6081add4f8128527affected · git
    • 4.19.316 and later · before 4.20affected · semver
    • 5.4.262 and later · before 5.5affected · semver
    • 5.10.198 and later · before 5.11affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:14linuxbefore 7.0.10-17.0.10-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-46322Jun 9, 2026 · tun: free page on build_skb failure in tun_xdp_one()
    28Monitor
  • ← EarlierCVE-2026-46323Jun 9, 2026 · net: gro: don't merge zcopy skbs
    31Monitor
  • Later →CVE-2026-46325Jun 9, 2026 · RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE
    39Monitor

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 Linux0bd93ce4f3c35e845532184331d7917d7e562c80Vendor (CNA)
Linux Linux0f33e8ad6ac563ae2233dd7f75884e0ee010521dVendor (CNA)
Linux Linux2405730fde96f7fa483a5862e323b681e0e09f54Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux5.11Vendor (CNA)
Linux Linux5.16Vendor (CNA)
Linux Linux5.18Vendor (CNA)
Linux Linux5.19Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux6480ea533cedfbf79ea5a1f12c5f71d41484dd8aVendor (CNA)
Linux Linuxf3224ee463f8f6f6ced7dcdf6081add4f8128527Vendor (CNA)
Linux Linuxfe45e203527af8a2c0dc4c8a7b56c09c74b796c8Vendor (CNA)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
debian:linux7.0.10-1 · Debian:14Package 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.

No history yet (it accumulates with the daily EPSS job).

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

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

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

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (5 more)

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

All records