[BUG] ipv6: possible null-pointer dereference in ip6_xmit()
From: Tuo Li
Date: Tue Aug 10 2021 - 09:46:20 EST
Hello,
Our static analysis tool finds a possible null-pointer dereference in
ip6_output.c in Linux 5.14.0-rc3:
The variable n is checked in:
314: if (np)
This indicates that it can be NULL. If so, a null-pointer dereference
will occur
in the called function ip6_autoflowlabel() at Line 320:
252: if (!np->autoflowlabel_set)
I am not quite sure whether this possible null-pointer dereference is
real and how to fix it if it is real.
Any feedback would be appreciated, thanks!
Reported-by: TOTE Robot <oslab@xxxxxxxxxxxxxxx>
Best wishes,
Tuo Li