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NVD / CVE Program· CNA Linux

CVE-2024-26642: netfilter: nf_tables: disallow anonymous set with timeout flag

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: 0.26% (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 16603605b667b70da974bea8216c93e7db043bf1, 72c1efe3f247a581667b7d368fff3bd9a03cd57a, 7cdc1be24cc1bcd56a3e89ac4aef20e31ad09199.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 16603605b667b70da974bea8216c93e7db043bf1, 72c1efe3f247a581667b7d368fff3bd9a03cd57a, 7cdc1be24cc1bcd56a3e89ac4aef20e31ad09199 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: disallow anonymous set with timeout flag Anonymous sets are never used with timeout from userspace, reject this. Exception to this rule is NFT_SET_EVAL to ensure legacy meters still work.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 21, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 19th 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 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

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

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-2024-26642

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
debiandebian linux

Affected versions

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

  • debian debian linux10.0
  • linux linux kernel4.20 and later · before 5.4.274
  • linux linux kernel5.5 and later · before 5.10.215
  • linux linux kernel5.11 and later · before 5.15.154
  • linux linux kernel4.1 and later · before 4.19.312
  • linux linux kernel6.2 and later · before 6.6.24
  • linux linux kernel6.7 and later · before 6.7.12
  • linux linux kernel5.16 and later · before 6.1.84

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

    • 4.1affected
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before e4988d8415bd0294d6f9f4a1e7095f8b50a97ca9affected · git
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before e9a0d3f376eb356d54ffce36e7cc37514cbfbd6faffected · git
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before fe40ffbca19dc70d7c6b1e3c77b9ccb404c57351affected · git
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before 7cdc1be24cc1bcd56a3e89ac4aef20e31ad09199affected · git
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before 72c1efe3f247a581667b7d368fff3bd9a03cd57aaffected · git
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before c0c2176d1814b92ea4c8e7eb7c9cd94cd99c1b12affected · git
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before 8e07c16695583a66e81f67ce4c46e94dece47ba7affected · git
    • 761da2935d6e18d178582dbdf315a3a458555505 and later · before 16603605b667b70da974bea8216c93e7db043bf1affected · git
    • before 4.1not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.3.0-427.18.1.el9_47.3.0-427.18.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.18.1.el9_45.14.0-427.18.1.el9_4

+96

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-2023-52614Mar 18, 2024 · PM / devfreq: Fix buffer overflow in trans_stat_show
    31Monitor
  • ← EarlierCVE-2023-52620Mar 21, 2024 · netfilter: nf_tables: disallow timeout for anonymous sets
    10Monitor
  • Later →CVE-2024-26643Mar 21, 2024 · netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout
    22Monitor

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 Linux16603605b667b70da974bea8216c93e7db043bf1Vendor (CNA)
Linux Linux72c1efe3f247a581667b7d368fff3bd9a03cd57aVendor (CNA)
Linux Linux7cdc1be24cc1bcd56a3e89ac4aef20e31ad09199Vendor (CNA)
Linux Linux8e07c16695583a66e81f67ce4c46e94dece47ba7Vendor (CNA)
Linux Linuxc0c2176d1814b92ea4c8e7eb7c9cd94cd99c1b12Vendor (CNA)
Linux Linuxe4988d8415bd0294d6f9f4a1e7095f8b50a97ca9Vendor (CNA)
Linux Linuxe9a0d3f376eb356d54ffce36e7cc37514cbfbd6fVendor (CNA)
Linux Linuxfe40ffbca19dc70d7c6b1e3c77b9ccb404c57351Vendor (CNA)
almalinux:bpftool7.3.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.18.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.85-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.18.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+3

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).

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (10 more)

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

All records