cpio - programming error

Dmitry Levin discovered a vulnerability in path handling code used by
the cpio archive utility. The weakness could enable a denial of
service (crash) or potentially the execution of arbitrary code if a
vulnerable version of cpio is used to extract or to list the contents
of a maliciously crafted archive.

For the stable distribution (etch), these problems have been fixed in
version 2.6-18.1+etch1.

For the unstable distribution (sid), these problems have been fixed in
version 2.9-5.

We recommend that you upgrade your cpio packages.