CVE-2013-2171: Freebsd

Medium severity, CVSS 6.9. EPSS: 6.9% chance of exploitation in the next 30 days.

The vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEASE-p4 does not properly determine whether a task should have write access to a memory location, which allows local users to bypass filesystem write permissions and consequently gain privileges via a crafted application that leverages read permissions, and makes mmap and ptrace system calls.

Affected products

• Freebsd Freebsd: version 9.0 only; version 9.1 only

Published 2013-07-02. Last modified 2026-06-16.