Linux Distros Unpatched Vulnerability : CVE-2024-46839

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

include('compat.inc');

if (description)
{
  script_id(229222);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/03/05");

  script_cve_id("CVE-2024-46839");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2024-46839");

  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.

  - In the Linux kernel, the following vulnerability has been resolved: workqueue: Improve scalability of
    workqueue watchdog touch On a ~2000 CPU powerpc system, hard lockups have been observed in the workqueue
    code when stop_machine runs (in this case due to CPU hotplug). This is due to lots of CPUs spinning in
    multi_cpu_stop, calling touch_nmi_watchdog() which ends up calling wq_watchdog_touch().
    wq_watchdog_touch() writes to the global variable wq_watchdog_touched, and that can find itself in the
    same cacheline as other important workqueue data, which slows down operations to the point of lockups. In
    the case of the following abridged trace, worker_pool_idr was in the hot line, causing the lockups to
    always appear at idr_find. watchdog: CPU 1125 self-detected hard LOCKUP @ idr_find Call Trace:
    get_work_pool __queue_work call_timer_fn run_timer_softirq __do_softirq do_softirq_own_stack irq_exit
    timer_interrupt decrementer_common_virt * interrupt: 900 (timer) at multi_cpu_stop multi_cpu_stop
    cpu_stopper_thread smpboot_thread_fn kthread Fix this by having wq_watchdog_touch() only write to the line
    if the last time a touch was recorded exceeds 1/4 of the watchdog threshold. (CVE-2024-46839)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  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:L/AC:L/Au:S/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/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:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-46839");

  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:"2024/09/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched");
  script_require_ports("Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}
include('vdf.inc');

# @tvdl-content
var vuln_data = {
 "metadata": {
  "spec_version": "1.0p"
 },
 "requires": [
  {
   "scope": "scan_config",
   "match": {
    "vendor_unpatched": true
   }
  },
  {
   "scope": "target",
   "match": {
    "os": "linux"
   }
  }
 ],
 "report": {
  "report_type": "unpatched"
 },
 "checks": [
  {
   "product": {
    "name": [
     "kernel",
     "kernel-rt"
    ],
    "type": "rpm_package"
   },
   "check_algorithm": "rpm",
   "constraints": [
    {
     "requires": [
      {
       "scope": "target",
       "match": {
        "distro": "redhat"
       }
      },
      {
       "scope": "target",
       "match_one": {
        "os_version": [
         "8",
         "9"
        ]
       }
      }
     ]
    }
   ]
  }
 ]
};

var vdf_res = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result: vdf_res);