Linux Distros Unpatched Vulnerability : CVE-2026-29111

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(303456);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/16");

  script_cve_id("CVE-2026-29111");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-29111");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - systemd, a system and service manager, (as PID 1) hits an assert and freezes execution when an
    unprivileged IPC API call is made with spurious data. On version v249 and older the effect is not an
    assert, but stack overwriting, with the attacker controlled content. From version v250 and newer this is
    not possible as the safety check causes an assert instead. This IPC call was added in v239, so versions
    older than that are not affected. Versions 260-rc1, 259.2, 258.5, and 257.11 contain patches. No known
    workarounds are available. (CVE-2026-29111)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-29111");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-29111");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/03/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-adsl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-bluetooth");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-cloud-setup");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-config-connectivity-redhat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-config-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-dispatcher-routing-rules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-initscripts-updown");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-libnm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-libnm-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-ovs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-ppp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-team");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-tui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-wifi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:NetworkManager-wwan");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libgudev1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libgudev1-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-ostree");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-ostree-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-container");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-journal-gateway");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-journal-remote");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-networkd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-pam");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:systemd-udev");
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  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/CentOS Linux-7", "Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "NetworkManager"},
          {"reference": "NetworkManager-adsl"},
          {"reference": "NetworkManager-bluetooth"},
          {"reference": "NetworkManager-cloud-setup"},
          {"reference": "NetworkManager-config-connectivity-redhat"},
          {"reference": "NetworkManager-config-server"},
          {"reference": "NetworkManager-libnm"},
          {"reference": "NetworkManager-libnm-devel"},
          {"reference": "NetworkManager-ovs"},
          {"reference": "NetworkManager-ppp"},
          {"reference": "NetworkManager-tui"},
          {"reference": "NetworkManager-wifi"},
          {"reference": "NetworkManager-wwan"},
          {"reference": "rpm-ostree"},
          {"reference": "rpm-ostree-libs"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "NetworkManager"},
          {"reference": "NetworkManager-adsl"},
          {"reference": "NetworkManager-bluetooth"},
          {"reference": "NetworkManager-cloud-setup"},
          {"reference": "NetworkManager-config-connectivity-redhat"},
          {"reference": "NetworkManager-config-server"},
          {"reference": "NetworkManager-dispatcher-routing-rules"},
          {"reference": "NetworkManager-initscripts-updown"},
          {"reference": "NetworkManager-libnm"},
          {"reference": "NetworkManager-libnm-devel"},
          {"reference": "NetworkManager-ovs"},
          {"reference": "NetworkManager-ppp"},
          {"reference": "NetworkManager-team"},
          {"reference": "NetworkManager-tui"},
          {"reference": "NetworkManager-wifi"},
          {"reference": "NetworkManager-wwan"},
          {"reference": "systemd"},
          {"reference": "systemd-container"},
          {"reference": "systemd-devel"},
          {"reference": "systemd-journal-remote"},
          {"reference": "systemd-libs"},
          {"reference": "systemd-pam"},
          {"reference": "systemd-tests"},
          {"reference": "systemd-udev"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "NetworkManager"},
          {"reference": "NetworkManager-adsl"},
          {"reference": "NetworkManager-bluetooth"},
          {"reference": "NetworkManager-cloud-setup"},
          {"reference": "NetworkManager-config-connectivity-redhat"},
          {"reference": "NetworkManager-config-server"},
          {"reference": "NetworkManager-dispatcher-routing-rules"},
          {"reference": "NetworkManager-initscripts-updown"},
          {"reference": "NetworkManager-libnm"},
          {"reference": "NetworkManager-libnm-devel"},
          {"reference": "NetworkManager-ovs"},
          {"reference": "NetworkManager-ppp"},
          {"reference": "NetworkManager-team"},
          {"reference": "NetworkManager-tui"},
          {"reference": "NetworkManager-wifi"},
          {"reference": "NetworkManager-wwan"},
          {"reference": "systemd"},
          {"reference": "systemd-container"},
          {"reference": "systemd-devel"},
          {"reference": "systemd-journal-remote"},
          {"reference": "systemd-libs"},
          {"reference": "systemd-pam"},
          {"reference": "systemd-tests"},
          {"reference": "systemd-udev"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "NetworkManager"},
          {"reference": "NetworkManager-adsl"},
          {"reference": "NetworkManager-bluetooth"},
          {"reference": "NetworkManager-cloud-setup"},
          {"reference": "NetworkManager-config-connectivity-redhat"},
          {"reference": "NetworkManager-config-server"},
          {"reference": "NetworkManager-dispatcher-routing-rules"},
          {"reference": "NetworkManager-initscripts-updown"},
          {"reference": "NetworkManager-libnm"},
          {"reference": "NetworkManager-libnm-devel"},
          {"reference": "NetworkManager-ovs"},
          {"reference": "NetworkManager-ppp"},
          {"reference": "NetworkManager-team"},
          {"reference": "NetworkManager-tui"},
          {"reference": "NetworkManager-wifi"},
          {"reference": "NetworkManager-wwan"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "libgudev1"},
          {"reference": "libgudev1-devel"},
          {"reference": "systemd"},
          {"reference": "systemd-devel"},
          {"reference": "systemd-journal-gateway"},
          {"reference": "systemd-libs"},
          {"reference": "systemd-networkd"},
          {"reference": "systemd-python"},
          {"reference": "systemd-resolved"},
          {"reference": "systemd-sysv"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "libgudev1"},
          {"reference": "libgudev1-devel"},
          {"reference": "systemd"},
          {"reference": "systemd-devel"},
          {"reference": "systemd-journal-gateway"},
          {"reference": "systemd-libs"},
          {"reference": "systemd-networkd"},
          {"reference": "systemd-python"},
          {"reference": "systemd-resolved"},
          {"reference": "systemd-sysv"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}