CVE-2026-42512
EUVD-2026-2635730.04.2026, 09:16
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.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5:beta3 |
| freebsd | freebsd | 13.5:p1 |
| freebsd | freebsd | 13.5:p10 |
| freebsd | freebsd | 13.5:p11 |
| freebsd | freebsd | 13.5:p12 |
| freebsd | freebsd | 13.5:p2 |
| freebsd | freebsd | 13.5:p3 |
| freebsd | freebsd | 13.5:p4 |
| freebsd | freebsd | 13.5:p5 |
| freebsd | freebsd | 13.5:p6 |
| freebsd | freebsd | 13.5:p7 |
| freebsd | freebsd | 13.5:p8 |
| freebsd | freebsd | 13.5:p9 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3:p1 |
| freebsd | freebsd | 14.3:p10 |
| freebsd | freebsd | 14.3:p11 |
| freebsd | freebsd | 14.3:p2 |
| freebsd | freebsd | 14.3:p3 |
| freebsd | freebsd | 14.3:p4 |
| freebsd | freebsd | 14.3:p5 |
| freebsd | freebsd | 14.3:p6 |
| freebsd | freebsd | 14.3:p7 |
| freebsd | freebsd | 14.3:p8 |
| freebsd | freebsd | 14.3:p9 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4:p1 |
| freebsd | freebsd | 14.4:p2 |
| freebsd | freebsd | 14.4:rc1 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0:p1 |
| freebsd | freebsd | 15.0:p2 |
| freebsd | freebsd | 15.0:p3 |
| freebsd | freebsd | 15.0:p4 |
| freebsd | freebsd | 15.0:p5 |
| freebsd | freebsd | 15.0:p6 |
𝑥
= Vulnerable software versions