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NVD / CVE Program· CNA Linux

CVE-2026-53001: netfilter: xtables: restrict several matches to inet family

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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 14203f9edf944b3fb63faadd62f38452421ecdfc, 689a91ff18d6448d94c1ab7c076fecdb2b668bef, 76160e04440c9698b989dbd9492a7ec4f520c9ee.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 14203f9edf944b3fb63faadd62f38452421ecdfc, 689a91ff18d6448d94c1ab7c076fecdb2b668bef, 76160e04440c9698b989dbd9492a7ec4f520c9ee 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: xtables: restrict several matches to inet family This is a partial revert of: commit ab4f21e6fb1c ("netfilter: xtables: use NFPROTO_UNSPEC in more extensions") to allow ipv4 and ipv6 only. - xt_mac - xt_owner - xt_physdev These extensions are not used by ebtables in userspace. Moreover, xt_realm is only for ipv4, since dst->tclassid is ipv4 specific.

Published
Jun 24, 2026
Updated
Nov 10, 2026
EPSS
0.1% · 2th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2026-53001

When you'll hear from us

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  • 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

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

    • 2.6.28affected
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before 14203f9edf944b3fb63faadd62f38452421ecdfcaffected · git
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before 7eaf9c740f33230cb224dc265f3c69f8531ff57baffected · git
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before 9a109751b297b0f2135495749ef5a18ba31ec7d4affected · git
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before cbeb259f31382de70a70a59ffd0e66f5e80d9818affected · git
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before 689a91ff18d6448d94c1ab7c076fecdb2b668befaffected · git
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before 76160e04440c9698b989dbd9492a7ec4f520c9eeaffected · git
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9affected · git
    • ab4f21e6fb1c09b13c4c3cb8357babe8223471bd and later · before b6fe26f86a1649f84e057f3f15605b08eda15497affected · git
    • before 2.6.28not affected · semver
Affected versions · NVD (7)

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

  • linux linux kernel2.6.28 and later · before 5.10.258
  • linux linux kernel5.11 and later · before 5.15.209
  • linux linux kernel5.16 and later · before 6.1.175
  • linux linux kernel6.2 and later · before 6.6.141
  • linux linux kernel6.7 and later · before 6.12.91
  • linux linux kernel6.13 and later · before 6.18.33
  • linux linux kernel6.19 and later · before 7.0.10

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.94-16.12.94-1
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-2026-52999Jun 24, 2026 · netfilter: nfnetlink_osf: fix out-of-bounds read on option matching
    36Monitor
  • ← EarlierCVE-2026-53000Jun 24, 2026 · netfilter: nat: use kfree_rcu to release ops
    31Monitor
  • Later →CVE-2026-53002Jun 24, 2026 · netfilter: conntrack: remove sprintf usage
    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 Linux14203f9edf944b3fb63faadd62f38452421ecdfcVendor (CNA)
Linux Linux689a91ff18d6448d94c1ab7c076fecdb2b668befVendor (CNA)
Linux Linux76160e04440c9698b989dbd9492a7ec4f520c9eeVendor (CNA)
Linux Linux7eaf9c740f33230cb224dc265f3c69f8531ff57bVendor (CNA)
Linux Linux9a109751b297b0f2135495749ef5a18ba31ec7d4Vendor (CNA)
Linux Linuxb6fe26f86a1649f84e057f3f15605b08eda15497Vendor (CNA)
Linux Linuxcbeb259f31382de70a70a59ffd0e66f5e80d9818Vendor (CNA)
Linux Linuxfa88161ef56e29bdaa05cc89dbc4ee221e94bfe9Vendor (CNA)
debian:linux6.1.176-1 · 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.

National notice (Türkiye Cybersecurity Directorate / USOM)

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

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

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.

References

Show all references (9 more)

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

All records