CVE-2026-98278: Linux 6.19

Affected technology

Linux · ab427db17885814069bae891834f20842f0ac3a4 to before d8eb177632dacda28bc6130c2105afbf5b791eb0, ab427db17885814069bae891834f20842f0ac3a4 to before 150dba2c69e93302af24a0c868eebe4871e2e107
Linux

Linux · 6.19
Linux

Component: Not specified by the source
File: net/core/dev.c

What an attacker can do

Loop is a configuration any CAP_NET_ADMIN user can set up, and ip_tunnel_xmit() and ip6_tnl_xmit() already treat it as a tx error, so remove the warning and just fail the walk, as commit 008e7a7c293b ("net: remove WARN_ON_ONCE when accessing forward path array") did for the path stack overflow.