VulnerabilityPublished 15 Aug 2026Updated 6 Nov 2026

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

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e59b1960f71521ce4eb4397c4e82f5285601ab57 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:04 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in e59b1960f71521ce4eb4397c4e82f5285601ab57, db3c700826e8126fbdaa83468a9c4ee4ee65319f, d2148aeee93197ccf821114489775132f28eebf5 +11

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=5.10.117 <5.10.261 >=5.15.41 <5.15.212 >=4.14.280 <4.15 >=4.19.244 <4.20 >=5.4.195 <5.5 >=5.17.9 <5.18	Fixed in e59b1960f71521ce4eb4397c4e82f5285601ab57 db3c700826e8126fbdaa83468a9c4ee4ee65319f d2148aeee93197ccf821114489775132f28eebf5 c1b28432fd6345e0d2308f39c507ed5750c265d2 a90f4fff9025371bce5371daa610af957de8dd6a 777a88256d6f70672116e53400659cc417e1feaa 353d2c1d5492e53ae34f490a84494124dc3d3531 5.18 5.15.212 5.10.261 5.5 4f3bf293f7662500142234ae6f23725953690bc9 4.20 4.15
LinuxLinux	Affected =5.18	Fixed in–

Description

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.

References

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