CVE-2026-42512 - Remotely triggerable out-of-bounds heap write in dhclient
CVE ID :CVE-2026-42512
Published : April 30, 2026, 9:16 a.m. | 2 hours, 59 minutes ago
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.
Severity: 0.0 | NA
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Published : April 30, 2026, 9:16 a.m. | 2 hours, 59 minutes ago
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.
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...