batman-adv: dat: acquire ARP hw source only after skb realloc
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.5%
exploitation probability
0.5%top 58% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641chttps://git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8https://git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146https://git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981https://git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480https://git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315https://git.kernel.org/stable/c/a82fc217cb7a447313c76ebf9f09b100771b0ddfhttps://git.kernel.org/stable/c/d755cd001fa2c248e186c1fc3df3d11d97dc843c