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NVD / CVE Program· CNA Linux

CVE-2026-72406: net: sungem: fix probe error cleanup

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.16% (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 331c99029a1cee1111f82f63d15b3cdebefbd341, 36dea2f639249460d13f6ca66b2a9064187cd34d, a63eaf7605d1579cf3f551792e478cfaf5ac37d1.

Low priority for now. Upgrade to Linux Linux 331c99029a1cee1111f82f63d15b3cdebefbd341, 36dea2f639249460d13f6ca66b2a9064187cd34d, a63eaf7605d1579cf3f551792e478cfaf5ac37d1 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: sungem: fix probe error cleanup gem_init_one() calls gem_remove_one() when register_netdev() fails. gem_remove_one() unregisters and frees resources owned by the net_device, including the DMA block, MMIO mapping, PCI regions, and the net_device itself. gem_init_one() then falls through to its own cleanup labels and frees the same resources again. Keep the register_netdev() error path in gem_init_one(): clear drvdata so PM/remove paths do not see a half-registered device, remove the NAPI instance added during probe, and let the existing cleanup labels release the resources once. The issue was found by a local static-analysis checker for probe error paths. The reported path was manually inspected before sending this fix. Compile-tested with CONFIG_SUNGEM=y. Runtime testing was not performed because no sungem hardware is available.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Aug 15, 2026
Updated
Oct 16, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
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

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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

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before f3bd60b26814b7c3c57c629abb0857dfc76d214aaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before f1d04fefb0c2a2de32d9cee22cdc2088be3758d1affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 331c99029a1cee1111f82f63d15b3cdebefbd341affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before a63eaf7605d1579cf3f551792e478cfaf5ac37d1affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before fb73cdc50b6755e5c3a80a195b2708a39ada0230affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before b15a3cc68e2450aa0edd94a74a7bdd45fcc17dd9affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before bc49e8746584564dba47d963d1916cc876fc6f6baffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 36dea2f639249460d13f6ca66b2a9064187cd34daffected · git
    • before 2.6.12not 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-2026-72404Aug 15, 2026 · tipc: fix UAF in cleanup_bearer() due to premature dst_cache_destroy()
    31Monitor
  • ← EarlierCVE-2026-72405Aug 15, 2026 · net: udp_tunnel: prevent double queueing in udp_tunnel_nic_device_sync
    31Monitor
  • Later →CVE-2026-72409Aug 15, 2026 · net: mvneta: re-enable percpu interrupt on resume
    30Monitor

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 Linux331c99029a1cee1111f82f63d15b3cdebefbd341Vendor (CNA)
Linux Linux36dea2f639249460d13f6ca66b2a9064187cd34dVendor (CNA)
Linux Linuxa63eaf7605d1579cf3f551792e478cfaf5ac37d1Vendor (CNA)
Linux Linuxb15a3cc68e2450aa0edd94a74a7bdd45fcc17dd9Vendor (CNA)
Linux Linuxbc49e8746584564dba47d963d1916cc876fc6f6bVendor (CNA)
Linux Linuxf1d04fefb0c2a2de32d9cee22cdc2088be3758d1Vendor (CNA)
Linux Linuxf3bd60b26814b7c3c57c629abb0857dfc76d214aVendor (CNA)
Linux Linuxfb73cdc50b6755e5c3a80a195b2708a39ada0230Vendor (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

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
high · data can be read
Integrity
high · data or configuration can be modified
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
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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