CVE-2008-5396: Asterisk Zaptel

High severity, CVSS 7.2. EPSS: 0.3% chance of exploitation in the next 30 days.

Array index error in the (1) torisa.c and (2) dahdi/tor2.c drivers in Zaptel (aka DAHDI) 1.4.11 and earlier allows local users in the dialout group to overwrite an integer value in kernel memory by writing to /dev/zap/ctl, related to missing validation of the sync field associated with the ZT_SPANCONFIG ioctl.

Affected products

• Asterisk Zaptel: up to and including 1.4.11; version 1.2 only; version 1.2.27 only; version 1.4 only

Published 2008-12-09. Last modified 2026-06-16.