[Bug 14781] A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the copyvar function

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=14781

--- Comment #4 from Natanael Copa <ncopa at alpinelinux.org> ---
simpler way to reproduce it:

echo "foo" | valgrind ./busybox_unstripped awk '$1$1=0'

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