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NVD / CVE Program· CNA Linux

CVE-2024-44983: netfilter: flowtable: validate vlan header

HighCVSS 7.1 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.25% (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 0279c35d242d037abeb73d60d06a6d1bb7f672d9, 043a18bb6cf16adaa2f8642acfde6e8956a9caaa, 6ea14ccb60c8ab829349979b22b58a941ec4a3ee; Azure Linux 3.0 ARM 6.6.51.1-1; Azure Linux 3.0 x64 6.6.51.1-1.

Low priority for now. Upgrade to Linux Linux 0279c35d242d037abeb73d60d06a6d1bb7f672d9, 043a18bb6cf16adaa2f8642acfde6e8956a9caaa, 6ea14ccb60c8ab829349979b22b58a941ec4a3ee; Azure Linux 3.0 ARM 6.6.51.1-1; Azure Linux 3.0 x64 6.6.51.1-1 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: validate vlan header Ensure there is sufficient room to access the protocol field of the VLAN header, validate it once before the flowtable lookup. ===================================================== BUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x45a/0x5f0 net/netfilter/nf_flow_table_inet.c:32 nf_flow_offload_inet_hook+0x45a/0x5f0 net/netfilter/nf_flow_table_inet.c:32 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline] nf_ingress net/core/dev.c:5440 [inline]

Published
Sep 4, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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

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Follow CVE-2024-44983

When you'll hear from us

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  • 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

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

    • 5.13affected
    • 4cd91f7c290f64fe430867ddbae10bff34657b6a and later · before c05155cc455785916164aa5e1b4605a2ae946537affected · git
    • 4cd91f7c290f64fe430867ddbae10bff34657b6a and later · before d9384ae7aec46036d248d1c2c2757e471ab486c3affected · git
    • 4cd91f7c290f64fe430867ddbae10bff34657b6a and later · before 0279c35d242d037abeb73d60d06a6d1bb7f672d9affected · git
    • 4cd91f7c290f64fe430867ddbae10bff34657b6a and later · before 043a18bb6cf16adaa2f8642acfde6e8956a9caaaaffected · git
    • 4cd91f7c290f64fe430867ddbae10bff34657b6a and later · before 6ea14ccb60c8ab829349979b22b58a941ec4a3eeaffected · git
    • before 5.13not affected · semver
    • 5.15.166 and later · up to and including 5.15.*not affected · semver
    • 6.1.107 and later · up to and including 6.1.*not affected · semver
    • 6.6.48 and later · up to and including 6.6.*not affected · semver
Affected versions · NVD (5)

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

  • linux linux kernel5.13 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

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.112-16.1.112-1
Debian:13linuxbefore 6.10.7-16.10.7-1

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-2024-44981Sep 4, 2024 · workqueue: Fix UBSAN 'subtraction overflow' error in shift_and_mask()
    22Monitor
  • ← EarlierCVE-2024-44982Sep 4, 2024 · drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails
    22Monitor
  • Later →CVE-2024-44984Sep 4, 2024 · bnxt_en: Fix double DMA unmapping for XDP_REDIRECT
    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 Linux0279c35d242d037abeb73d60d06a6d1bb7f672d9Vendor (CNA)
Linux Linux043a18bb6cf16adaa2f8642acfde6e8956a9caaaVendor (CNA)
Linux Linux6ea14ccb60c8ab829349979b22b58a941ec4a3eeVendor (CNA)
Linux Linuxc05155cc455785916164aa5e1b4605a2ae946537Vendor (CNA)
Linux Linuxd9384ae7aec46036d248d1c2c2757e471ab486c3Vendor (CNA)
Azure Linux 3.0 ARM6.6.51.1-1 · kernelMicrosoft (MSRC)
Azure Linux 3.0 x646.6.51.1-1 · kernelMicrosoft (MSRC)
CBL Mariner 2.0 ARM5.15.167.1-1 · kernelMicrosoft (MSRC)
CBL Mariner 2.0 x645.15.167.1-1 · kernelMicrosoft (MSRC)
debian:linux6.1.112-1 · 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.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-5030276 days apartHID: core: zero-initialize the report bufferKEV
    52Plan
  • CVE-2024-4768547 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
    36Monitor
  • CVE-2024-5014364 days apartudf: fix uninit-value use in udf_get_fileshortad
    31Monitor
  • CVE-2024-3689897 days apartgpiolib: cdev: fix uninitialised kfifo
    31Monitor
  • CVE-2021-47553103 days apartsched/scs: Reset task stack state in bringup_cpu()
    31Monitor
  • CVE-2024-27022126 days apartfork: defer linking file vma until vma is fully initialized
    31Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

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
high · data can be read
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
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-908 · Use of Uninitialized Resource

CVSS vector

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

References

Show all references (5 more)

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

All records