CVE-2013-2171

Severity: medium (CVSS 6.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-07-02 · updated 2026-06-16
Weakness: CWE-264

Description

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: 9.0, 9.1, 9.1-p4

References

http://svnweb.freebsd.org/base?view=revision&revision=251901
http://www.debian.org/security/2013/dsa-2714
http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.asc
http://svnweb.freebsd.org/base?view=revision&revision=251901
http://www.debian.org/security/2013/dsa-2714
http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.asc

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