by Kastro CVE-2026-72234
Linux Linux — batman-adv: access unicast_ttvn skb->data only after skb realloc
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < aa9558af859934f24717d4bab97d61004f91a736aa9558af859934f24717d4bab97d61004f91a736CNA
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < 9c2c05629e46c1fd43931506d41c56a885a98eb49c2c05629e46c1fd43931506d41c56a885a98eb4CNA
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < 7b162b36de750565404cd3b98315706622c6974f7b162b36de750565404cd3b98315706622c6974fCNA
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < ed90eb5c68420cdfe67ec1f773324198d2ef6f50ed90eb5c68420cdfe67ec1f773324198d2ef6f50CNA
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < 979175834a699ccc3c4c0b0ba60ecae0f135a587979175834a699ccc3c4c0b0ba60ecae0f135a587CNA
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < b8afcf799b2cc92c41beebd029e53ed18960184ab8afcf799b2cc92c41beebd029e53ed18960184aCNA
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < 9a7b7248798123efbd5fafe58461d57c7cc718af9a7b7248798123efbd5fafe58461d57c7cc718afCNA
Linuxc018ad3de61a1dc4194879a53e5559e094aa7b1a – < 7141990add3f75436f2933cb310654cad3b1e3e97141990add3f75436f2933cb310654cad3b1e3e9CNA
Linux3.13–CNA
Scores by source
Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total