Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: acquire ARP hw source 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.
References8
- git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641c
- git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8
- git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146
- git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981
- git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480
- git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315
- git.kernel.org/stable/c/a82fc217cb7a447313c76ebf9f09b100771b0ddf
- git.kernel.org/stable/c/d755cd001fa2c248e186c1fc3df3d11d97dc843c
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 55 · as of 8 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.