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NVD / CVE Program· CNA Linux

CVE-2024-44944: netfilter: ctnetlink: use helper function to calculate expect ID

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: 0.23% (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 24f407042cf90b0872de667460230d8d50c06c39, 27662b46f2adaa52c1665a82af4b21c42c4337fd, 3.17.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 24f407042cf90b0872de667460230d8d50c06c39, 27662b46f2adaa52c1665a82af4b21c42c4337fd, 3.17 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: ctnetlink: use helper function to calculate expect ID Delete expectation path is missing a call to the nf_expect_get_id() helper function to calculate the expectation ID, otherwise LSB of the expectation object address is leaked to userspace.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Aug 30, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 14th 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-2024-44944

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 kernel5.2 and later · before 5.4.282
  • linux linux kernel5.5 and later · before 5.10.224
  • linux linux kernel5.11 and later · before 5.15.165
  • linux linux kernel5.16 and later · before 6.1.103
  • linux linux kernel6.2 and later · before 6.6.44
  • linux linux kernel6.7 and later · before 6.10.3
  • linux linux kernel4.19.320
  • linux linux kernel5.1

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

    • 3d8b3d0384f709126beef6b917b7e97c23f18e74, 36bbd861a402a8c5bd8f0365a5967d34cc492f09, 1922476beeeea46bebbe577215078736dd4231dc, f862c13c3c926d3008b2c2bcc746ab813108dfbf, b0a90cae081d7ee14eaa46524fb70f4e23ae8905, 5.1affected
    • 7b115755fb9d3aff0ddcd18a5c4d83381362acce and later · before 66e7650dbbb8e236e781c670b167edc81e771450affected · git
    • 3c79107631db1f7fd32cf3f7368e4672004a3010 and later · before 64c0b8e64be8368617ef08dfc59a3160563a1435affected · git
    • 3c79107631db1f7fd32cf3f7368e4672004a3010 and later · before eb4ca1a97e08ff5b920664ba292e576257e2d184affected · git
    • 3c79107631db1f7fd32cf3f7368e4672004a3010 and later · before 5e2c24f7b0911b15c29aefce760bcf770542fb61affected · git
    • 3c79107631db1f7fd32cf3f7368e4672004a3010 and later · before 24f407042cf90b0872de667460230d8d50c06c39affected · git
    • 3c79107631db1f7fd32cf3f7368e4672004a3010 and later · before 27662b46f2adaa52c1665a82af4b21c42c4337fdaffected · git
    • 3c79107631db1f7fd32cf3f7368e4672004a3010 and later · before 74de442b8e12a207c07953ee068009a7701aff8faffected · git
    • 3c79107631db1f7fd32cf3f7368e4672004a3010 and later · before 782161895eb4ac45cf7cfa8db375bd4766cb8299affected · git
    • 4.19.44 and later · before 4.19.320affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.106-16.1.106-1
Debian:13linuxbefore 6.10.3-16.10.3-1

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-2021-4442Aug 29, 2024 · tcp: add sanity tests to TCP_QUEUE_SEQ
    22Monitor
  • ← EarlierCVE-2022-48944Aug 30, 2024 · sched: Fix yet more sched_fork() races
    22Monitor
  • Later →CVE-2024-44945Aug 31, 2024 · netfilter: nfnetlink: Initialise extack before use in ACKs
    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 Linux24f407042cf90b0872de667460230d8d50c06c39Vendor (CNA)
Linux Linux27662b46f2adaa52c1665a82af4b21c42c4337fdVendor (CNA)
Linux Linux3.17Vendor (CNA)
Linux Linux4.10Vendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.19.320Vendor (CNA)
Linux Linux4.5Vendor (CNA)
Linux Linux5.1Vendor (CNA)
Linux Linux5e2c24f7b0911b15c29aefce760bcf770542fb61Vendor (CNA)
Linux Linux64c0b8e64be8368617ef08dfc59a3160563a1435Vendor (CNA)
Linux Linux66e7650dbbb8e236e781c670b167edc81e771450Vendor (CNA)
Linux Linux74de442b8e12a207c07953ee068009a7701aff8fVendor (CNA)
Linux Linux782161895eb4ac45cf7cfa8db375bd4766cb8299Vendor (CNA)
Linux Linuxeb4ca1a97e08ff5b920664ba292e576257e2d184Vendor (CNA)
debian:linux6.1.106-1 · 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)

CWE-401 · Missing Release of Memory after Effective Lifetime

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 (14 more)

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

All records