CVE-2026-72249

In the Linux kernel, the following vulnerability has been resolved:

netfilter: flowtable: use dst in this direction when pushing IPIP header

When pushing the IPIP header, the route of the other direction is used

to calculate the headroom, use the route in this direction. Accessing

the other tuple to set the IP source and destination is fine because

this tuple does not provide such information to avoid storing redundant

information. However, this tuple already provides the dst for this

direction, this went unnoticed because this bug affects headroom and

iph->frag_off only at this stage.