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CVE-2024-40993· NVD / CVE Program· CNA Linux

netfilter: ipset: Fix suspicious rcu_dereference_protected()

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: 0.27% (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 3799d02ae4208af08e81310770d8754863a246a1, 3fc09e1ca854bc234e007a56e0f7431f5e2defb5, 523bed6489e089dd8040e72453fb79da47b144c2.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3799d02ae4208af08e81310770d8754863a246a1, 3fc09e1ca854bc234e007a56e0f7431f5e2defb5, 523bed6489e089dd8040e72453fb79da47b144c2 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: ipset: Fix suspicious rcu_dereference_protected() When destroying all sets, we are either in pernet exit phase or are executing a "destroy all sets command" from userspace. The latter was taken into account in ip_set_dereference() (nfnetlink mutex is held), but the former was not. The patch adds the required check to rcu_dereference_protected() in ip_set_dereference().

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 12, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 18th 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.

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.

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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 kernel6.1.95
  • linux linux kernel6.10
  • linux linux kernel6.6.35
  • linux linux kernel6.9.6

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

    • c0761d1f1ce1d5b85b5e82bbb714df12de1aa8c3 and later · before 3799d02ae4208af08e81310770d8754863a246a1affected · git
    • 93b53c202b51a69e42ca57f5a183f7e008e19f83 and later · before 72d9611968867cc4c5509e7708b1507d692b797aaffected · git
    • 0f1bb77c6d837c9513943bc7c08f04c5cc5c6568 and later · before 523bed6489e089dd8040e72453fb79da47b144c2affected · git
    • 390b353d1a1da3e9c6c0fd14fe650d69063c95d6 and later · before 788d585e62f487bc4536d454937f737b70d39a33affected · git
    • 2ba35b37f780c6410bb4bba9c3072596d8576702 and later · before 94dd411c18d7fff9e411555d5c662d29416501e4affected · git
    • 90ae20d47de602198eb69e6cd7a3db3420abfc08 and later · before 3fc09e1ca854bc234e007a56e0f7431f5e2defb5affected · git
    • 4e7aaa6b82d63e8ddcbfb56b4fd3d014ca586f10 and later · before 8ecd06277a7664f4ef018abae3abd3451d64e7a6affected · git
    • 6.1.95 and later · before 6.1.96affected · semver
    • 6.6.35 and later · before 6.6.36affected · semver
    • 6.9.6 and later · before 6.9.7affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.99-16.1.99-1
Debian:13linuxbefore 6.9.7-16.9.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-40980Jul 12, 2024 · drop_monitor: replace spin_lock by raw_spin_lock
    22Monitor
  • ← EarlierCVE-2024-40984Jul 12, 2024 · ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
    22Monitor
  • Later →CVE-2024-40995Jul 12, 2024 · net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()
    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 Linux3799d02ae4208af08e81310770d8754863a246a1Vendor (CNA)
Linux Linux3fc09e1ca854bc234e007a56e0f7431f5e2defb5Vendor (CNA)
Linux Linux523bed6489e089dd8040e72453fb79da47b144c2Vendor (CNA)
Linux Linux6.1.96Vendor (CNA)
Linux Linux6.6.36Vendor (CNA)
Linux Linux6.9.7Vendor (CNA)
Linux Linux72d9611968867cc4c5509e7708b1507d692b797aVendor (CNA)
Linux Linux788d585e62f487bc4536d454937f737b70d39a33Vendor (CNA)
Linux Linux8ecd06277a7664f4ef018abae3abd3451d64e7a6Vendor (CNA)
Linux Linux94dd411c18d7fff9e411555d5c662d29416501e4Vendor (CNA)
debian:linux6.1.99-1 · 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.

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

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 (8 more)

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

All records