CVE-2026-72235

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6e189f14d1ea28db212b9d70a02131a7ce518012affected
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < a1820344b180cb55af748f102bc536b5c93164dbaffected
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6abf73589bed3f27ee240c08108feb72bed0b9c6affected
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < f19259395b44af67f3c274e34237c295b526b859affected
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 2cefa5141cab8ec1e4b24cf585958b13f2e3049daffected
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 85a71a81854e0e191ad0e533eabb4eff54866febaffected
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < b031fc97e1993d29d6c3a0e86a99140528cf31e8affected
LinuxLinuxc6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 035e1fed892d3d06002a73ff73668f618a514644affected
LinuxLinux2.6.38affected
LinuxLinux0 < 2.6.38unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References