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NVD / CVE Program· CNA Linux

CVE-2024-45018: netfilter: flowtable: initialise extack before use

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: 0.24% (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 119be227bc04f5035efa64cb823b8a5ca5e2d1c1, 356beb911b63a8cff34cb57f755c2a2d2ee9dec7, 7eafeec6be68ebd6140a830ce9ae68ad5b67ec78.

Low priority for now. Upgrade to Linux Linux 119be227bc04f5035efa64cb823b8a5ca5e2d1c1, 356beb911b63a8cff34cb57f755c2a2d2ee9dec7, 7eafeec6be68ebd6140a830ce9ae68ad5b67ec78 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: flowtable: initialise extack before use Fix missing initialisation of extack in flow offload.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 11, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 15th 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.

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-2024-45018

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 kernel5.5 and later · before 5.10.225
  • linux linux kernel5.11 and later · before 5.15.166
  • linux linux kernel5.16 and later · before 6.1.107
  • linux linux kernel6.2 and later · before 6.6.48
  • linux linux kernel6.7 and later · before 6.10.7
  • linux linux kernel6.11

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

    • 5.5affected
    • c29f74e0df7a02b8303bcdce93a7c0132d62577a and later · before e5ceff2196dc633c995afb080f6f44a72cff6e1daffected · git
    • c29f74e0df7a02b8303bcdce93a7c0132d62577a and later · before 356beb911b63a8cff34cb57f755c2a2d2ee9dec7affected · git
    • c29f74e0df7a02b8303bcdce93a7c0132d62577a and later · before 7eafeec6be68ebd6140a830ce9ae68ad5b67ec78affected · git
    • c29f74e0df7a02b8303bcdce93a7c0132d62577a and later · before c7b760499f7791352b49b11667ed04b23d7f5b0faffected · git
    • c29f74e0df7a02b8303bcdce93a7c0132d62577a and later · before 119be227bc04f5035efa64cb823b8a5ca5e2d1c1affected · git
    • c29f74e0df7a02b8303bcdce93a7c0132d62577a and later · before e9767137308daf906496613fd879808a07f006a2affected · git
    • before 5.5not affected · semver
    • 5.10.225 and later · up to and including 5.10.*not affected · semver
    • 5.15.166 and later · up to and including 5.15.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.4.0-503.16.1.el9_57.4.0-503.16.1.el9_5
AlmaLinux:9kernelbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64kbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-corebefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-debugbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-develbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-corebefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-cross-headersbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-debugbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-debug-corebefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-debug-develbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-503.16.1.el9_55.14.0-503.16.1.el9_5

+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-2024-46672Sep 11, 2024 · wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion
    22Monitor
  • ← EarlierCVE-2024-45016Sep 11, 2024 · netem: fix return value if duplicate enqueue fails
    22Monitor
  • Later →CVE-2024-46673Sep 13, 2024 · scsi: aacraid: Fix double-free on probe failure
    31Monitor

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 Linux119be227bc04f5035efa64cb823b8a5ca5e2d1c1Vendor (CNA)
Linux Linux356beb911b63a8cff34cb57f755c2a2d2ee9dec7Vendor (CNA)
Linux Linux7eafeec6be68ebd6140a830ce9ae68ad5b67ec78Vendor (CNA)
Linux Linuxc7b760499f7791352b49b11667ed04b23d7f5b0fVendor (CNA)
Linux Linuxe5ceff2196dc633c995afb080f6f44a72cff6e1dVendor (CNA)
Linux Linuxe9767137308daf906496613fd879808a07f006a2Vendor (CNA)
almalinux:bpftool7.4.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-503.16.1.el9_5 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.112-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.4.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-503.16.1.el9_5 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+1

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.

  • CVE-2021-47194154 days apartcfg80211: call cfg80211_stop_ap when switch from P2P_GO type
    31Monitor
  • CVE-2023-52452202 days apartbpf: Fix accesses to uninit stack slots
    31Monitor
  • CVE-2024-466972 days apartnfsd: ensure that nfsd4_fattr_args.context is zeroed out
    22Monitor
  • CVE-2024-449479 days apartfuse: Initialize beyond-EOF page contents before setting uptodate
    22Monitor
  • CVE-2024-4207844 days apartnfsd: initialise nfsd_info.mutex early.
    22Monitor
  • CVE-2024-3948568 days apartmedia: v4l: async: Properly re-initialise notifier entry in unregister
    22Monitor

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-665 · Improper Initialization

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.

ATT&CK techniques

—

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