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NVD / CVE Program· CNA Linux

CVE-2026-72228: batman-adv: frag: fix primary_if leak on failed linearization

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 353d2c1d5492e53ae34f490a84494124dc3d3531, 4.15, 4.20.

Low priority for now. Upgrade to Linux Linux 353d2c1d5492e53ae34f490a84494124dc3d3531, 4.15, 4.20 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: frag: fix primary_if leak on failed linearization If the skb has a frag_list, it must be linearized before it can be split using skb_split(). But when this step failed, it must not only free the skb but also take care of the reference to the already found primary_if.

—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

  • 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

    • 5ed837a7e05bcba72bdcd86b12547ea5b796cc01, 5853618b022b8ed287a278540303e1b283d6f247, 3915341a935f3397f65a01580dc3bfc4cdf53d14, bea410635595f8efbec90c948da04c3613ef87ea, 5.18affected
    • a6a73781b460c4fe2cf2c40400ac91dfddb353fa and later · before e59b1960f71521ce4eb4397c4e82f5285601ab57affected · git
    • 8f37aad74f46dd5d8b95fac17804b75f77931fa9 and later · before c1b28432fd6345e0d2308f39c507ed5750c265d2affected · git
    • a063f2fba3fa633a599253b62561051ac185fa99 and later · before 4f3bf293f7662500142234ae6f23725953690bc9affected · git
    • a063f2fba3fa633a599253b62561051ac185fa99 and later · before d2148aeee93197ccf821114489775132f28eebf5affected · git
    • a063f2fba3fa633a599253b62561051ac185fa99 and later · before db3c700826e8126fbdaa83468a9c4ee4ee65319faffected · git
    • a063f2fba3fa633a599253b62561051ac185fa99 and later · before a90f4fff9025371bce5371daa610af957de8dd6aaffected · git
    • a063f2fba3fa633a599253b62561051ac185fa99 and later · before 777a88256d6f70672116e53400659cc417e1feaaaffected · git
    • a063f2fba3fa633a599253b62561051ac185fa99 and later · before 353d2c1d5492e53ae34f490a84494124dc3d3531affected · git
    • 5.10.117 and later · before 5.10.261affected · 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-2026-72225Aug 15, 2026 · jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit()
    31Monitor
  • ← EarlierCVE-2026-72226Aug 15, 2026 · batman-adv: tt: prevent TVLV OOB check overflow
    39Monitor
  • Later →CVE-2026-72229Aug 15, 2026 · batman-adv: clean untagged VLAN on netdev registration 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 Linux353d2c1d5492e53ae34f490a84494124dc3d3531Vendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux4f3bf293f7662500142234ae6f23725953690bc9Vendor (CNA)
Linux Linux5.10.261Vendor (CNA)
Linux Linux5.15.212Vendor (CNA)
Linux Linux5.18Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux777a88256d6f70672116e53400659cc417e1feaaVendor (CNA)
Linux Linuxa90f4fff9025371bce5371daa610af957de8dd6aVendor (CNA)
Linux Linuxc1b28432fd6345e0d2308f39c507ed5750c265d2Vendor (CNA)
Linux Linuxd2148aeee93197ccf821114489775132f28eebf5Vendor (CNA)
Linux Linuxdb3c700826e8126fbdaa83468a9c4ee4ee65319fVendor (CNA)
Linux Linuxe59b1960f71521ce4eb4397c4e82f5285601ab57Vendor (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