CVE-2026-72234batman-adv: access unicast_ttvn skb->data only after skb realloc
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
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
- 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.