Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: reacquire gw address after skb realloc The pskb_may_pull() called by batadv_bla_is_backbone_gw() 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.
References8
- git.kernel.org/stable/c/41819c5467b6eb8ab4567f0ac98702ce9b6abbb1
- git.kernel.org/stable/c/4a6673c55752a7aa41e28f51660eb981504ca088
- git.kernel.org/stable/c/a9ab19fbca86b32e9a9ae9e1a63e70a7eab3400f
- git.kernel.org/stable/c/ab2bac47a02637df1128a151e81d3ec14767f4bb
- git.kernel.org/stable/c/cdf3b5af2bc4431e58629e8ad2086b1e9185c761
- git.kernel.org/stable/c/dc16bbf53cede1baf564bf0c8a861114b64e18b3
- git.kernel.org/stable/c/e5e18886aadd3870e2d84e32a9678317fab1dd9e
- git.kernel.org/stable/c/f4fb97ecf677cd9c3aa4f3bfc6fbf5b0e4bdbbbf
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
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.