batman-adv: bla: reacquire gw address after skb realloc
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/41819c5467b6eb8ab4567f0ac98702ce9b6abbb1https://git.kernel.org/stable/c/4a6673c55752a7aa41e28f51660eb981504ca088https://git.kernel.org/stable/c/a9ab19fbca86b32e9a9ae9e1a63e70a7eab3400fhttps://git.kernel.org/stable/c/ab2bac47a02637df1128a151e81d3ec14767f4bbhttps://git.kernel.org/stable/c/cdf3b5af2bc4431e58629e8ad2086b1e9185c761https://git.kernel.org/stable/c/dc16bbf53cede1baf564bf0c8a861114b64e18b3https://git.kernel.org/stable/c/e5e18886aadd3870e2d84e32a9678317fab1dd9ehttps://git.kernel.org/stable/c/f4fb97ecf677cd9c3aa4f3bfc6fbf5b0e4bdbbbf