CVE-2026-72235

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: retrieve ethhdr after potential skb realloc on RX pskb_may_pull() in batadv_interface_rx() 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 VLAN header but missed for the ethernet header which is later used for the TT and AP isolation handling.

References

• https://git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644
• https://git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d
• https://git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6
• https://git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012
• https://git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb