Date published: 2017-07-17T09:18:18.593-04:00
Date last modified: 2017-11-03T21:29:28.443-04:00
CVSS Score: 7.2
Principal attack vector: LOCAL
Reference URL: http://www.debian.org/security/2017/dsa-3945
Summary: Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check, and the fact that parport_ptr integer is static, a ‘secure boot’ kernel command line adversary (can happen due to bootloader vulns, e.g. Google Nexus 6’s CVE-2016-10277, where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code, by appending many (>LP_NO) ‘lp=none’ arguments to the command line.