Linux Distros Unpatched Vulnerability : CVE-2025-21755

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

include('compat.inc');

if (description)
{
  script_id(231149);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/03/06");

  script_cve_id("CVE-2025-21755");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2025-21755");

  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: vsock: Orphan socket after transport
    release During socket release, sock_orphan() is called without considering that it sets sk->sk_wq to NULL.
    Later, if SO_LINGER is enabled, this leads to a null pointer dereferenced in
    virtio_transport_wait_close(). Orphan the socket only after transport release. Partially reverts the
    'Fixes:' commit. KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
    lock_acquire+0x19e/0x500 _raw_spin_lock_irqsave+0x47/0x70 add_wait_queue+0x46/0x230
    virtio_transport_release+0x4e7/0x7f0 __vsock_release+0xfd/0x490 vsock_release+0x90/0x120
    __sock_release+0xa3/0x250 sock_close+0x14/0x20 __fput+0x35e/0xa90 __x64_sys_close+0x78/0xd0
    do_syscall_64+0x93/0x1b0 entry_SYSCALL_64_after_hwframe+0x76/0x7e (CVE-2025-21755)

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:N/C:N/I:N/A:P");
  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-2025-21755");

  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:"2025/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/06");

  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/Debian/dpkg-l", "Host/Debian/release");

  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": [
     "bpftool",
     "hyperv-daemons",
     "intel-sdsi",
     "libcpupower-dev",
     "libcpupower1",
     "linux-bpf-dev",
     "linux-config-6.12",
     "linux-cpupower",
     "linux-doc",
     "linux-doc-6.12",
     "linux-headers-4kc-malta",
     "linux-headers-5kc-malta",
     "linux-headers-6.12.12-4kc-malta",
     "linux-headers-6.12.12-5kc-malta",
     "linux-headers-6.12.12-alpha-generic",
     "linux-headers-6.12.12-alpha-smp",
     "linux-headers-6.12.12-amd64",
     "linux-headers-6.12.12-arm64",
     "linux-headers-6.12.12-arm64-16k",
     "linux-headers-6.12.12-armmp",
     "linux-headers-6.12.12-armmp-lpae",
     "linux-headers-6.12.12-cloud-amd64",
     "linux-headers-6.12.12-cloud-arm64",
     "linux-headers-6.12.12-common",
     "linux-headers-6.12.12-common-rt",
     "linux-headers-6.12.12-loong64",
     "linux-headers-6.12.12-loongson-3",
     "linux-headers-6.12.12-m68k",
     "linux-headers-6.12.12-mips32r2eb",
     "linux-headers-6.12.12-mips32r2el",
     "linux-headers-6.12.12-mips64r2eb",
     "linux-headers-6.12.12-mips64r2el",
     "linux-headers-6.12.12-mips64r6el",
     "linux-headers-6.12.12-octeon",
     "linux-headers-6.12.12-parisc",
     "linux-headers-6.12.12-parisc64"
    ],
    "type": "dpkg_package"
   },
   "check_algorithm": "dpkg",
   "constraints": [
    {
     "requires": [
      {
       "scope": "target",
       "match": {
        "distro": "debian"
       }
      },
      {
       "scope": "target",
       "match": {
        "os_version": "13"
       }
      }
     ]
    }
   ]
  }
 ]
};

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