CVEvulnerability
CVE-2026-72234
9.8 CRITICAL
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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.
References
- https://git.kernel.org/stable/c/7141990add3f75436f2933cb310654cad3b1e3e9 git.kernel.org
- https://git.kernel.org/stable/c/7b162b36de750565404cd3b98315706622c6974f git.kernel.org
- https://git.kernel.org/stable/c/979175834a699ccc3c4c0b0ba60ecae0f135a587 git.kernel.org
- https://git.kernel.org/stable/c/9a7b7248798123efbd5fafe58461d57c7cc718af git.kernel.org
- https://git.kernel.org/stable/c/9c2c05629e46c1fd43931506d41c56a885a98eb4 git.kernel.org
- https://git.kernel.org/stable/c/aa9558af859934f24717d4bab97d61004f91a736 git.kernel.org
- https://git.kernel.org/stable/c/b8afcf799b2cc92c41beebd029e53ed18960184a git.kernel.org
- https://git.kernel.org/stable/c/ed90eb5c68420cdfe67ec1f773324198d2ef6f50 git.kernel.org