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CVE-2024-26643· NVD / CVE Program· CNA Linux

netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

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: 0.20% (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 291cca35818bd52a407bc37ab45a15816039e363, 406b0241d0eb598a0b330ab20ae325537d8d8163, 5.10.215.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 291cca35818bd52a407bc37ab45a15816039e363, 406b0241d0eb598a0b330ab20ae325537d8d8163, 5.10.215 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: mark set as dead when unbinding anonymous set with timeout While the rhashtable set gc runs asynchronously, a race allows it to collect elements from anonymous sets with timeouts while it is being released from the commit path. Mingi Cho originally reported this issue in a different path in 6.1.x with a pipapo set with low timeouts which is not possible upstream since 7395dfacfff6 ("netfilter: nf_tables: use timestamp to check for set element timeout"). Fix this by setting on the dead flag for anonymous sets to skip async gc in this case. According to 08e4c8c5919f ("netfilter: nf_tables: mark newset as dead on transaction abort"), Florian plans to accelerate abort path by releasing objects via workqueue, therefore, this sets on the dead flag for abort path too.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 21, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 9th percentile

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-2024-26643

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 kernel5.5 and later · before 5.10.215
  • linux linux kernel5.11 and later · before 5.15.154
  • linux linux kernelbefore 5.4.274
  • 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

    • 0624f190b5742a1527cd938295caa8dc5281d4cd, 6.5affected
    • 8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27 and later · before d75a589bb92af1abf3b779cfcd1977ca11b27033affected · git
    • bbdb3b65aa91aa0a32b212f27780b28987f2d94f and later · before edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bfaffected · git
    • 448be0774882f95a74fa5eb7519761152add601b and later · before e2d45f467096e931044f0ab7634499879d851a5caffected · git
    • d19e8bf3ea4114dd21fc35da21f398203d7f7df1 and later · before 291cca35818bd52a407bc37ab45a15816039e363affected · git
    • ea3eb9f2192e4fc33b795673e56c97a21987f868 and later · before 406b0241d0eb598a0b330ab20ae325537d8d8163affected · git
    • 5f68718b34a531a556f2f50300ead2862278da26 and later · before b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1affected · git
    • 5f68718b34a531a556f2f50300ead2862278da26 and later · before 5224afbc30c3ca9ba23e752f0f138729b2c48dd8affected · git
    • 5f68718b34a531a556f2f50300ead2862278da26 and later · before 552705a3650bbf46a22b1adedc1b04181490fc36affected · git
    • 5.4.262 and later · before 5.4.274affected · 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-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-2023-52620Mar 21, 2024 · netfilter: nf_tables: disallow timeout for anonymous sets
    10Monitor
  • ← EarlierCVE-2024-26642Mar 21, 2024 · netfilter: nf_tables: disallow anonymous set with timeout flag
    22Monitor
  • Later →CVE-2021-47136Mar 25, 2024 · net: zero-initialize tc skb extension on allocation
    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 Linux291cca35818bd52a407bc37ab45a15816039e363Vendor (CNA)
Linux Linux406b0241d0eb598a0b330ab20ae325537d8d8163Vendor (CNA)
Linux Linux5.10.215Vendor (CNA)
Linux Linux5.15.154Vendor (CNA)
Linux Linux5.4.274Vendor (CNA)
Linux Linux5224afbc30c3ca9ba23e752f0f138729b2c48dd8Vendor (CNA)
Linux Linux552705a3650bbf46a22b1adedc1b04181490fc36Vendor (CNA)
Linux Linux6.1.84Vendor (CNA)
Linux Linux6.5Vendor (CNA)
Linux Linuxb2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1Vendor (CNA)
Linux Linuxd75a589bb92af1abf3b779cfcd1977ca11b27033Vendor (CNA)
Linux Linuxe2d45f467096e931044f0ab7634499879d851a5cVendor (CNA)
Linux Linuxedcf1a3f182ecf8b6b805f0ce90570ea98c5f6bfVendor (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)

+20

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).

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)

CWE-667 · Improper Locking

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (9 more)

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

All records