Detections
Analytics
CVE-2026-42512
high
Description
As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun. A specially crafted packet can cause dhclient to overrun its buffer of environment entries. This can result in a crash, but it may be possible to leverage this bug to achieve remote code execution.
References
https://security.freebsd.org/advisories/FreeBSD-SA-26:15.dhclient.asc