VulnerabilityPublished 15 Aug 2026Updated 6 Nov 2026

CVE-2026-72230: Linux kernel · batman-adv: frag: free unfragmentable packet

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in a5155aeeae8ead3c6081f7f197608033e4dcfe75 : 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 a5155aeeae8ead3c6081f7f197608033e4dcfe75, 08047838817561cef33ada9774a2a4663d499ecb, 740542f11bf8c86411c429fbd7f84fc6bee80e76 +5

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 ≥ ee75ed88879af88558818a5c6609d85f60ff0df4, < a5155aeeae8ead3c6081f7f197608033e4dcfe75	Fixed in a5155aeeae8ead3c6081f7f197608033e4dcfe75
LinuxLinux	Affected ≥ ee75ed88879af88558818a5c6609d85f60ff0df4, < 08047838817561cef33ada9774a2a4663d499ecb	Fixed in 08047838817561cef33ada9774a2a4663d499ecb
LinuxLinux	Affected ≥ ee75ed88879af88558818a5c6609d85f60ff0df4, < 740542f11bf8c86411c429fbd7f84fc6bee80e76	Fixed in 740542f11bf8c86411c429fbd7f84fc6bee80e76
LinuxLinux	Affected ≥ ee75ed88879af88558818a5c6609d85f60ff0df4, < 601dff01a03ecced59938cdd69eeb2c66e4158f2	Fixed in 601dff01a03ecced59938cdd69eeb2c66e4158f2
LinuxLinux	Affected ≥ ee75ed88879af88558818a5c6609d85f60ff0df4, < 59e1da1ab354d1f2b7bab8d44f846262f990ad9d	Fixed in 59e1da1ab354d1f2b7bab8d44f846262f990ad9d
LinuxLinux	Affected ≥ ee75ed88879af88558818a5c6609d85f60ff0df4, < 8f54162e07d3eea1e4ff21464cf2a815d79b6510	Fixed in 8f54162e07d3eea1e4ff21464cf2a815d79b6510

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: free unfragmentable packet The caller of batadv_frag_send_packet() assume that the skb provided to the function are always consumed. But the pre-check for an empty payload or the zero fragment size returned an error without any further actions. A failed pre-check must use the same error handling code as the rest of the function.

References

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