Stephen Dranger discovered a buffer overflow in linpopup, an X11 port of winpopup, running over Samba, that could lead to the execution of arbitrary code when displaying a maliciously crafted message.
For the stable distribution (woody) this problem has been fixed in version 1.2.0-2woody1.
For the unstable distribution (sid) this problem has been fixed in version 1.2.0-7.
We recommend that you upgrade your linpopup package.
MD5 checksums of the listed files are available in the original advisory.