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NVD / CVE Program· CNA Linux

CVE-2026-72229: batman-adv: clean untagged VLAN on netdev registration failure

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: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 06ae245168268b705a204f93c318b30107d10e92, 5a82c558098889cc8bfff85cc62f563833205d91, 8669a550c752d86baebc5fdc83b8ff35c4372c0e.

Low priority for now. Upgrade to Linux Linux 06ae245168268b705a204f93c318b30107d10e92, 5a82c558098889cc8bfff85cc62f563833205d91, 8669a550c752d86baebc5fdc83b8ff35c4372c0e 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: batman-adv: clean untagged VLAN on netdev registration failure When an mesh interface is registered, it creates an untagged struct batadv_meshif_vlan on top of it via the NETDEV_REGISTER notifier. But in this process, another receiver of this notification can veto the registration. The netdev registration will be aborted because of this veto. The register_netdevice() call will try to clean up the net_device using unregister_netdevice_queue() - which only uses the .priv_destructor to free private resources. In this situation, .dellink will not be called. The cleanup of the untagged batadv_meshif_vlan must thefore be done in the destructor to avoid a leak of this object.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Nov 6, 2026
EPSS
0.2% · 12th 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%

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.

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • 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

    • 3.13affected
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before 86e32dfb6a6fe29898f4a562b7b6e38e480bba4daffected · git
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before 06ae245168268b705a204f93c318b30107d10e92affected · git
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before dbca15fcbeed5276af440a53aed3901590fa7fc9affected · git
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before f2423da55976ea249f73029e468aefda4b94acbaaffected · git
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before f15ca6250591cfe78408114a54eaa8d58da51bfaaffected · git
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before c945f6007e7851e74706c72f98763023699bcd97affected · git
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before 5a82c558098889cc8bfff85cc62f563833205d91affected · git
    • 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 and later · before 8669a550c752d86baebc5fdc83b8ff35c4372c0eaffected · git
    • before 3.13not 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-2026-72226Aug 15, 2026 · batman-adv: tt: prevent TVLV OOB check overflow
    39Monitor
  • ← EarlierCVE-2026-72228Aug 15, 2026 · batman-adv: frag: fix primary_if leak on failed linearization
    0Monitor
  • Later →CVE-2026-72230Aug 15, 2026 · batman-adv: frag: free unfragmentable packet
    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 Linux06ae245168268b705a204f93c318b30107d10e92Vendor (CNA)
Linux Linux5a82c558098889cc8bfff85cc62f563833205d91Vendor (CNA)
Linux Linux8669a550c752d86baebc5fdc83b8ff35c4372c0eVendor (CNA)
Linux Linux86e32dfb6a6fe29898f4a562b7b6e38e480bba4dVendor (CNA)
Linux Linuxc945f6007e7851e74706c72f98763023699bcd97Vendor (CNA)
Linux Linuxdbca15fcbeed5276af440a53aed3901590fa7fc9Vendor (CNA)
Linux Linuxf15ca6250591cfe78408114a54eaa8d58da51bfaVendor (CNA)
Linux Linuxf2423da55976ea249f73029e468aefda4b94acbaVendor (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. 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