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NVD / CVE Program· CNA Linux

CVE-2026-72296: net: ife: require ETH_HLEN to be pullable in ife_decode()

Noroxi assessment

Priority: Monitor (action score 36/100)

  • 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: 0.73% (FIRST EPSS); higher than 54.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 1cb42ec10294a55380e52e674b3df2b962648242, 5526d1997aea6c9bd865ca4d4894b52e799d735c, 70013f9163bef7fbd9fa62f81cf91b2a7ba66163.

Low priority for now. Upgrade to Linux Linux 1cb42ec10294a55380e52e674b3df2b962648242, 5526d1997aea6c9bd865ca4d4894b52e799d735c, 70013f9163bef7fbd9fa62f81cf91b2a7ba66163 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: net: ife: require ETH_HLEN to be pullable in ife_decode() ife decode may return after making only the outer IFE header and metadata pullable. The caller then passes the decapsulated packet to eth_type_trans(), which expects the inner Ethernet header to be accessible from the linear data area. With a malformed IFE frame, the inner Ethernet header may still be shorter than ETH_HLEN in the linear area, which can lead to a crash in the original code. Fix this by extending the pull check in ife_decode() so that the inner Ethernet header is also guaranteed to be pullable before returning.

CriticalCVSS 9.1 · v3.1—No exploit Fix available
Published
Aug 15, 2026
Updated
Oct 16, 2026
EPSS
0.7% · 54th percentile
CWE
—

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
9.1
NVD has not scored this yet; the score shown is the CNA’s.

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-2026-72296

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.

—

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

    • 4.6affected
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before 70013f9163bef7fbd9fa62f81cf91b2a7ba66163affected · git
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before be272e159dfe1207b67332ad6e17adcf59b4ea4baffected · git
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before 8c8818e52fddb247ff3214622401a4de6ff8482eaffected · git
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before 9433578bff9c100c466a6354574892e55293cb8faffected · git
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before 1cb42ec10294a55380e52e674b3df2b962648242affected · git
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before 5526d1997aea6c9bd865ca4d4894b52e799d735caffected · git
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before b69ad768cd4a2ef4e07c18492ae85438ed17c7cbaffected · git
    • ef6980b6becb1afd9d82a4f043749a10ae81bf14 and later · before 9406f6012b7343661efb516a11c62d4db2b62f75affected · git
    • before 4.6not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72289Aug 15, 2026 · KVM: arm64: vgic: Check the interrupt is still ours before migrating it
    37Monitor
  • ← EarlierCVE-2026-72290Aug 15, 2026 · KVM: s390: pci: Fix GISC refcount leak on AIF enable failure
    0Monitor
  • Later →CVE-2026-72297Aug 15, 2026 · net: atm: reject out-of-range traffic classes in QoS validation
    28Monitor

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 Linux1cb42ec10294a55380e52e674b3df2b962648242Vendor (CNA)
Linux Linux5526d1997aea6c9bd865ca4d4894b52e799d735cVendor (CNA)
Linux Linux70013f9163bef7fbd9fa62f81cf91b2a7ba66163Vendor (CNA)
Linux Linux8c8818e52fddb247ff3214622401a4de6ff8482eVendor (CNA)
Linux Linux9406f6012b7343661efb516a11c62d4db2b62f75Vendor (CNA)
Linux Linux9433578bff9c100c466a6354574892e55293cb8fVendor (CNA)
Linux Linuxb69ad768cd4a2ef4e07c18492ae85438ed17c7cbVendor (CNA)
Linux Linuxbe272e159dfe1207b67332ad6e17adcf59b4ea4bVendor (CNA)
debian:linux6.1.180-1 · 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+1% in 7 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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • 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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

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. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records