batman-adv: gw: acquire ethernet header only 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: gw: acquire ethernet header 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: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/2760b38222c8828b075802342fe3b91eb823d542https://git.kernel.org/stable/c/6c37f1166549c999ccd164b0cb6462d1ae68f8f6https://git.kernel.org/stable/c/77880a3be88d378d60cc1e8f8ec70430e2ed0518https://git.kernel.org/stable/c/916dac5f2944f63f07f7b501acbea6737dbbed0ehttps://git.kernel.org/stable/c/afac8096bde4948e3caa7e4dd733867cfbd3018ehttps://git.kernel.org/stable/c/b79884a5567bf788fb76c30832467cf6a56f3c0dhttps://git.kernel.org/stable/c/e3f4325e35dd6e76b80665f3510738ce34819753https://git.kernel.org/stable/c/e6b43acd34b219b807e65096ce207b087942779d