Detections
Analytics

Fedora 45 : dhcpcd (2026-c36b5fc4ca)

high Nessus Plugin ID 376341

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-c36b5fc4ca advisory.

 - Fix daemonising broken by RLIMIT_NOFILE of 0 on Linux (rhbz#2547780)
 - Update to 10.5.2 (rhbz#2511521)

 The upstream release contains fixes for the following CVE BZ reports:

 - Bug 2492035 - CVE-2026-56113 dhcpcd: dhcpcd: Denial of Service via crafted DHCPv6 RENEW reply
 - Bug 2492033 - CVE-2026-56114 dhcpcd: dhcpcd: Denial of Service due to stack out-of-bounds write via crafted DHCPv6 message
 - Bug 2492038 - CVE-2026-56115 dhcpcd: dhcpcd: Denial of Service via crafted DHCPv6 ADVERTISE message
 - Bug 2492036 - CVE-2026-56116 dhcpcd: dhcpcd: Denial of Service via IPv6 Router Advertisement memory leak
 - Bug 2492027 - CVE-2026-56117 dhcpcd: dhcpcd: Local heap use-after-free vulnerability leads to denial of service


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

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

Solution

Update the affected dhcpcd package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-c36b5fc4ca

Plugin Details

Severity: High

ID: 376341

File Name: fedora_2026-c36b5fc4ca.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/5/2026

Updated: 11/5/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.02

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.8

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

CVSS Score Source: CVE-2026-56114

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.4

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-56115

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:45, p-cpe:/a:fedoraproject:fedora:dhcpcd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/30/2026

Vulnerability Publication Date: 6/23/2026

Reference Information

CVE: CVE-2026-56113, CVE-2026-56114, CVE-2026-56115, CVE-2026-56116, CVE-2026-56117