Ping patches (1 of 4)

[ckyzee_freebsdfoundation.org]

Summary

Add a condition to bound datap in the outpackhdr_end in order to clear a global buffer overflow.

Previously ping(8) crashes with Segmentation Fault due to Out-0f-Bound Write of size 1, causing global-buffer-overflow.

Submitted by: Neeraj <[e-mail]>

Tested by: Colin Zee <[e-mail]>

[emaste]

Please include context with the change - see https://wiki.freebsd.org/Phabricator

[ckyzee_freebsdfoundation.org]

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