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.
References8
- git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644
- git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d
- git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6
- git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012
- git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb
- git.kernel.org/stable/c/a1820344b180cb55af748f102bc536b5c93164db
- git.kernel.org/stable/c/b031fc97e1993d29d6c3a0e86a99140528cf31e8
- git.kernel.org/stable/c/f19259395b44af67f3c274e34237c295b526b859
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 28 · as of 11 November 2026
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