[LTP] cve: add pwnescape reproducer

[Andrea Cervesato]

> Hi Andrea,
> 
> On 20 Oct 2026, Andrea Cervesato wrote:
> > cve: add pwnescape reproducer
> 
> > +	SAFE_FILE_PRINTF("/proc/sys/net/ipv4/ip_forward", "1");
> 
> Medium severity: CONFIG_TUN and the namespace dependencies allow
> CONFIG_SYSCTL=n. On that configuration this path is absent, so setup
> reports TBROK instead of TCONF; add CONFIG_SYSCTL=y to .needs_kconfigs.

This is valid

--
Andrea Cervesato
SUSE QE Automation Engineer Linux
andrea.cervesato@suse.com