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openSUSE 16 Security Update : dhcpcd (openSUSE-SU-2026:21220-1)

medium Nessus Plugin ID 325044

Synopsis

The remote openSUSE host is missing a security update.

Description

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:21220-1 advisory.

 This update for dhcpcd fixes the following issue

 Update to 10.3.2:

 - CVE-2025-70102: NULL pointer dereference in `parse_option()` when processing a specially crafted configuration input (bsc#1268761).

 Changes for dhcpcd:

 * options: Ensure ldop is not NULL dereferenced
 * DHCP: Don't run double EXPIRE hooks on carrier loss
 * DHCP: free the state when dropping on state NONE
 * BSD: don't send uninitialised memory using ps_root_indirectioctl
 * Fix fallback_time option
 * IPv4: Ignore DHCP state when building routes
 * route: Routes may not have an interface assinged
 * options: Ensure that an overly long bitflag string does not crash
 * options: Don't assume vsio options have an argument
 * common: Cast via uintptr_t rather than unsigned long in UNCONST
 * privsep: Ensure we recv for real after a successful recv MSG_PEEK
 * DHCP: Add parentheses to macro definitions
 * ipv6nd: empty IPV6RA_EXPIRE eloop queue when dropping
 * privsep: enforce message boundaries with MSG_EOR on our messages
 * Protocols will notify when dhcpcd can exit
 * DHCP: Don't request T1 and T2
 * DHCP: Don't request a lease time
 * DHCP6: Don't exit if using DHCP4 INFORM in non manager mode
 * ND: Route Information Option prefix is optional
 * ipv6: respect slaac hwaddr to really use the hwaddr
 * When stopping all interfaces at exit and releasing, remove persistance
 * NetBSD: Delete RTF_CONNECTED route when changing it
 * privsep: Drain the log when the root process is exiting
 * eloop: vastly reworked, kqueue and epoll support on by default

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected dhcpcd package.

See Also

https://bugzilla.suse.com/1268761

https://www.suse.com/security/cve/CVE-2025-70102

Plugin Details

Severity: Medium

ID: 325044

File Name: openSUSE-2026-21220-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/3/2026

Updated: 7/3/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.8

Percentile: 22.53

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2025-70102

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:dhcpcd

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/2/2026

Vulnerability Publication Date: 6/15/2026

Reference Information

CVE: CVE-2025-70102