Linux Distros Unpatched Vulnerability : CVE-2025-22069

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

include('compat.inc');

if (description)
{
  script_id(246055);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/21");

  script_cve_id("CVE-2025-22069");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2025-22069");

  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: riscv: fgraph: Fix stack layout to
    match __arch_ftrace_regs argument of ftrace_return_to_handler Naresh Kamboju reported a Bad frame
    pointer kernel warning while running LTP trace ftrace_stress_test.sh in riscv. We can reproduce the same
    issue with the following command: ``` $ cd /sys/kernel/debug/tracing $ echo 'f:myprobe do_nanosleep%return
    args1=$retval' > dynamic_events $ echo 1 > events/fprobes/enable $ echo 1 > tracing_on $ sleep 1 ``` And
    we can get the following kernel warning: [ 127.692888] ------------[ cut here ]------------ [ 127.693755]
    Bad frame pointer: expected ff2000000065be50, received ba34c141e9594000 [ 127.693755] from func
    do_nanosleep return to ffffffff800ccb16 [ 127.698699] WARNING: CPU: 1 PID: 129 at
    kernel/trace/fgraph.c:755 ftrace_return_to_handler+0x1b2/0x1be [ 127.699894] Modules linked in: [
    127.700908] CPU: 1 UID: 0 PID: 129 Comm: sleep Not tainted 6.14.0-rc3-g0ab191c74642 #32 [ 127.701453]
    Hardware name: riscv-virtio,qemu (DT) [ 127.701859] epc : ftrace_return_to_handler+0x1b2/0x1be [
    127.702032] ra : ftrace_return_to_handler+0x1b2/0x1be [ 127.702151] epc : ffffffff8013b5e0 ra :
    ffffffff8013b5e0 sp : ff2000000065bd10 [ 127.702221] gp : ffffffff819c12f8 tp : ff60000080853100 t0 :
    6e00000000000000 [ 127.702284] t1 : 0000000000000020 t2 : 6e7566206d6f7266 s0 : ff2000000065bd80 [
    127.702346] s1 : ff60000081262000 a0 : 000000000000007b a1 : ffffffff81894f20 [ 127.702408] a2 :
    0000000000000010 a3 : fffffffffffffffe a4 : 0000000000000000 [ 127.702470] a5 : 0000000000000000 a6 :
    0000000000000008 a7 : 0000000000000038 [ 127.702530] s2 : ba34c141e9594000 s3 : 0000000000000000 s4 :
    ff2000000065bdd0 [ 127.702591] s5 : 00007fff8adcf400 s6 : 000055556dc1d8c0 s7 : 0000000000000068 [
    127.702651] s8 : 00007fff8adf5d10 s9 : 000000000000006d s10: 0000000000000001 [ 127.702710] s11:
    00005555737377c8 t3 : ffffffff819d899e t4 : ffffffff819d899e [ 127.702769] t5 : ffffffff819d89a0 t6 :
    ff2000000065bb18 [ 127.702826] status: 0000000200000120 badaddr: 0000000000000000 cause: 0000000000000003
    [ 127.703292] [<ffffffff8013b5e0>] ftrace_return_to_handler+0x1b2/0x1be [ 127.703760] [<ffffffff80017bce>]
    return_to_handler+0x16/0x26 [ 127.704009] [<ffffffff80017bb8>] return_to_handler+0x0/0x26 [ 127.704057]
    [<ffffffff800d3352>] common_nsleep+0x42/0x54 [ 127.704117] [<ffffffff800d44a2>]
    __riscv_sys_clock_nanosleep+0xba/0x10a [ 127.704176] [<ffffffff80901c56>] do_trap_ecall_u+0x188/0x218 [
    127.704295] [<ffffffff8090cc3e>] handle_exception+0x14a/0x156 [ 127.705436] ---[ end trace
    0000000000000000 ]--- The reason is that the stack layout for constructing argument for the
    ftrace_return_to_handler in the return_to_handler does not match the __arch_ftrace_regs structure of
    riscv, leading to unexpected results. (CVE-2025-22069)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2025-22069");
  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:N/C:N/I:C/A:C");
  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:H/I:H/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-2025-22069");

  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:"2025/04/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/08/08");

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

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

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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/Debian/dpkg-l"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "linux-hwe-edge"}
        ]
      }
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  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
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        "release": "18.04",
        "pkgs": [
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          {"reference": "linux-azure-5.3"},
          {"reference": "linux-azure-cloud-tools-4.15.0"},
          {"reference": "linux-azure-edge"},
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          {"reference": "linux-azure-tools-4.15.0"},
          {"reference": "linux-cloud-tools-4.15.0"},
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          {"reference": "linux-gcp-headers-4.15.0"},
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          {"reference": "linux-gke-4.15"},
          {"reference": "linux-gke-5.4"},
          {"reference": "linux-gkeop-5.4"},
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  }
};

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_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}