An array index error in zaptel, a set of drivers for telephony hardware, could allow users to crash the system or escalate their privileges by overwriting kernel memory (CVE-2008-5396).
For the stable distribution (etch), this problem has been fixed in version 1.2.11.dfsg-1+etch1.
For the unstable distribution (sid) and the testing distribution (lenny), this problem has been fixed in version 1.4.11~dfsg-3.
We recommend that you upgrade your zaptel package.
MD5 checksums of the listed files are available in the original advisory.