Critical 9.8Published Aug 15, 2026

CVE-2026-72234batman-adv: access unicast_ttvn skb->data only after skb realloc

Updated under an hour ago (Oct 27, 2026, 12:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: batman-adv: access unicast_ttvn skb->data only after skb realloc The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the ethernet header but missed for the unicast_packet pointer.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c018ad3de61a1dc4194879a53e5559e094aa7b1a before aa9558af859934f24717d4bab97d61004f91a736; from c018ad3de61a1dc4194879a53e5559e094aa7b1a before 9c2c05629e46c1fd43931506d41c56a885a98eb4; from c018ad3de61a1dc4194879a53e5559e094aa7b1a before 7b162b36de750565404cd3b98315706622c6974f; from c018ad3de61a1dc4194879a53e5559e094aa7b1a before ed90eb5c68420cdfe67ec1f773324198d2ef6f50; from c018ad3de61a1dc4194879a53e5559e094aa7b1a before 979175834a699ccc3c4c0b0ba60ecae0f135a587; from c018ad3de61a1dc4194879a53e5559e094aa7b1a before b8afcf799b2cc92c41beebd029e53ed18960184a; from c018ad3de61a1dc4194879a53e5559e094aa7b1a before 9a7b7248798123efbd5fafe58461d57c7cc718af; from c018ad3de61a1dc4194879a53e5559e094aa7b1a before 7141990add3f75436f2933cb310654cad3b1e3e9	CNA record

References

References

https://git.kernel.org/stable/c/aa9558af859934f24717d4bab97d61004f91a736
https://git.kernel.org/stable/c/9c2c05629e46c1fd43931506d41c56a885a98eb4
https://git.kernel.org/stable/c/7b162b36de750565404cd3b98315706622c6974f
https://git.kernel.org/stable/c/ed90eb5c68420cdfe67ec1f773324198d2ef6f50
https://git.kernel.org/stable/c/979175834a699ccc3c4c0b0ba60ecae0f135a587
https://git.kernel.org/stable/c/b8afcf799b2cc92c41beebd029e53ed18960184a
https://git.kernel.org/stable/c/9a7b7248798123efbd5fafe58461d57c7cc718af
https://git.kernel.org/stable/c/7141990add3f75436f2933cb310654cad3b1e3e9

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.