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CVE-2026-72058· NVD / CVE Program· CNA Linux

net: ixp4xx_hss: fix duplicate HDLC netdev allocation

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 3f85fcd520aa703824b1958f35169925ddae2558, 77d925b948ee594a79afe66f85bb94b67940140b, 8f4c3c384092becbf4835a3f8ed8a3df1f544578.

Low priority for now. Upgrade to Linux Linux 3f85fcd520aa703824b1958f35169925ddae2558, 77d925b948ee594a79afe66f85bb94b67940140b, 8f4c3c384092becbf4835a3f8ed8a3df1f544578 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: ixp4xx_hss: fix duplicate HDLC netdev allocation ixp4xx_hss_probe() allocates two HDLC netdevs. The first one is stored in ndev, initialized, and registered with register_hdlc_device(). The second one is stored in port->netdev and later used by the remove path for unregister_hdlc_device() and free_netdev(). This means that the registered netdev is not the same object that is unregistered and freed on remove. It also leaks the first allocation if the second alloc_hdlcdev() call fails, and the first allocation is not checked before ndev is used. Older code allocated the HDLC netdev only once and stored the same object in both the local variable and port->netdev. The buggy conversion split this into two alloc_hdlcdev() calls. A later rename changed the local variable name to ndev, but the underlying mismatch remained. Fix this by allocating the HDLC netdev only once and assigning the same object to port->netdev.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 23, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • No public exploit code on record
  • A fix has been released

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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

    • 5.14affected
    • 99ebe65eb9c0ada015931d239d9f2d1dc8897fee and later · before 77d925b948ee594a79afe66f85bb94b67940140baffected · git
    • 99ebe65eb9c0ada015931d239d9f2d1dc8897fee and later · before 8f4c3c384092becbf4835a3f8ed8a3df1f544578affected · git
    • 99ebe65eb9c0ada015931d239d9f2d1dc8897fee and later · before fd0b939ebd1eee29945a539c5ed65c35dddac8d6affected · git
    • 99ebe65eb9c0ada015931d239d9f2d1dc8897fee and later · before ffba16e6f55948d94b7f16aa113d587c1c4c0643affected · git
    • 99ebe65eb9c0ada015931d239d9f2d1dc8897fee and later · before 3f85fcd520aa703824b1958f35169925ddae2558affected · git
    • 99ebe65eb9c0ada015931d239d9f2d1dc8897fee and later · before 91850f582783098415a334f8bd0a84c87ff15a8caffected · git
    • 99ebe65eb9c0ada015931d239d9f2d1dc8897fee and later · before db818b0e8af7bac16860116a19c341a63d6677b4affected · git
    • before 5.14not affected · semver
    • 5.15.217 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
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-2026-72050Aug 15, 2026 · octeontx2-af: Free BPID bitmap on setup failure
    0Monitor
  • ← EarlierCVE-2026-72056Aug 15, 2026 · net: ena: clean up XDP TX queues when regular TX setup fails
    0Monitor
  • Later →CVE-2026-72059Aug 15, 2026 · net: wwan: t7xx: destroy DMA pool on CLDMA late init failure
    0Monitor

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 Linux3f85fcd520aa703824b1958f35169925ddae2558Vendor (CNA)
Linux Linux77d925b948ee594a79afe66f85bb94b67940140bVendor (CNA)
Linux Linux8f4c3c384092becbf4835a3f8ed8a3df1f544578Vendor (CNA)
Linux Linux91850f582783098415a334f8bd0a84c87ff15a8cVendor (CNA)
Linux Linuxdb818b0e8af7bac16860116a19c341a63d6677b4Vendor (CNA)
Linux Linuxfd0b939ebd1eee29945a539c5ed65c35dddac8d6Vendor (CNA)
Linux Linuxffba16e6f55948d94b7f16aa113d587c1c4c0643Vendor (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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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✗ → ✓

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References

Show all references (6 more)

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

All records