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Vulnerabilities CVE-2026-42512

CVE-2026-42512

High
Open
TLP:CLEAR

AI Analysis

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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.

Details

CVSS Score
8.1
EPSS Score
1.42%

70.6th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Apr 30, 2026
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