Ubuntu 22.04 LTS : Linux kernel (Xilinx ZynqMP) vulnerabilities (USN-8528-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8528-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(326495);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/14");

  script_cve_id(
    "CVE-2022-48816",
    "CVE-2023-53673",
    "CVE-2024-35862",
    "CVE-2024-50060",
    "CVE-2025-37778",
    "CVE-2025-37822",
    "CVE-2025-37924",
    "CVE-2025-38201",
    "CVE-2025-40082",
    "CVE-2025-68214",
    "CVE-2025-68263",
    "CVE-2025-71089",
    "CVE-2025-71220",
    "CVE-2025-71222",
    "CVE-2025-71224",
    "CVE-2026-23176",
    "CVE-2026-23180",
    "CVE-2026-23182",
    "CVE-2026-23190",
    "CVE-2026-23193",
    "CVE-2026-23198",
    "CVE-2026-23202",
    "CVE-2026-23206",
    "CVE-2026-23216",
    "CVE-2026-23256",
    "CVE-2026-23257",
    "CVE-2026-23258",
    "CVE-2026-23262",
    "CVE-2026-23272",
    "CVE-2026-23274",
    "CVE-2026-23278",
    "CVE-2026-23351",
    "CVE-2026-23428",
    "CVE-2026-23450",
    "CVE-2026-23455",
    "CVE-2026-31402",
    "CVE-2026-31418",
    "CVE-2026-31419",
    "CVE-2026-31431",
    "CVE-2026-31478",
    "CVE-2026-31504",
    "CVE-2026-31533",
    "CVE-2026-31607",
    "CVE-2026-31637",
    "CVE-2026-31649",
    "CVE-2026-31657",
    "CVE-2026-31659",
    "CVE-2026-31668",
    "CVE-2026-31669",
    "CVE-2026-31682",
    "CVE-2026-31685",
    "CVE-2026-43011",
    "CVE-2026-43033",
    "CVE-2026-43037",
    "CVE-2026-43038",
    "CVE-2026-43071",
    "CVE-2026-43077",
    "CVE-2026-43078",
    "CVE-2026-43114",
    "CVE-2026-43117",
    "CVE-2026-43186",
    "CVE-2026-43284",
    "CVE-2026-43304",
    "CVE-2026-43341",
    "CVE-2026-43383",
    "CVE-2026-43406",
    "CVE-2026-43407",
    "CVE-2026-43414",
    "CVE-2026-43493",
    "CVE-2026-43494",
    "CVE-2026-43500",
    "CVE-2026-43501",
    "CVE-2026-43503",
    "CVE-2026-45988",
    "CVE-2026-46028",
    "CVE-2026-46043",
    "CVE-2026-46119",
    "CVE-2026-46135",
    "CVE-2026-46195",
    "CVE-2026-46243",
    "CVE-2026-46300",
    "CVE-2026-46333"
  );
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2026/05/15");
  script_xref(name:"USN", value:"8528-1");

  script_name(english:"Ubuntu 22.04 LTS : Linux kernel (Xilinx ZynqMP) vulnerabilities (USN-8528-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in
the USN-8528-1 advisory.

    It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic
    operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or
    possibly escape a container. (CVE-2026-31431)

    It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer
    operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in
    the RxRPC networking subsystem when processing paged fragments. A local attacker could use this to
    escalate privileges, or possibly escape a container. (CVE-2026-43284, CVE-2026-43500)

    It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when
    handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to
    escalate privileges, or possibly escape a container. (CVE-2026-43503, CVE-2026-46300)

    Qualys discovered that a race condition existed in the ptrace subsystem of the Linux kernel when
    privileged processes are exiting. An unprivileged local attacker could use this issue to expose sensitive
    information. (CVE-2026-46333)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to
    compromise the system. This update corrects flaws in the following subsystems:

    - RISC-V architecture;

    - Cryptographic API;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - Ethernet bonding driver;

    - Network drivers;

    - STMicroelectronics network drivers;

    - NVME drivers;

    - x86 platform drivers;

    - SCSI subsystem;

    - SPI subsystem;

    - TCM subsystem;

    - USB over IP driver;

    - File systems infrastructure;

    - HFS+ file system;

    - Network file system (NFS) server daemon;

    - SMB network file system;

    - IPv6 networking;

    - Netfilter;

    - Tracing infrastructure;

    - io_uring subsystem;

    - Timer subsystem;

    - B.A.T.M.A.N. meshing protocol;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - Ceph Core library;

    - IPv4 networking;

    - MAC80211 subsystem;

    - Multipath TCP;

    - Packet sockets;

    - RDS protocol;

    - RxRPC session sockets;

    - SMC sockets;

    - Sun RPC protocol;

    - TLS protocol;

    - X.25 network layer;

    - AMD SoC Alsa drivers;

    - KVM subsystem; (CVE-2022-48816, CVE-2023-53673, CVE-2024-35862, CVE-2024-50060, CVE-2025-37778,
    CVE-2025-37822, CVE-2025-37924, CVE-2025-38201, CVE-2025-40082, CVE-2025-68214, CVE-2025-68263,
    CVE-2025-71089, CVE-2025-71220, CVE-2025-71222, CVE-2025-71224, CVE-2026-23176, CVE-2026-23180,
    CVE-2026-23182, CVE-2026-23190, CVE-2026-23193, CVE-2026-23198, CVE-2026-23202, CVE-2026-23206,
    CVE-2026-23216, CVE-2026-23256, CVE-2026-23257, CVE-2026-23258, CVE-2026-23262, CVE-2026-23272,
    CVE-2026-23274, CVE-2026-23278, CVE-2026-23351, CVE-2026-23428, CVE-2026-23450, CVE-2026-23455,
    CVE-2026-31402, CVE-2026-31418, CVE-2026-31419, CVE-2026-31478, CVE-2026-31504, CVE-2026-31533,
    CVE-2026-31607, CVE-2026-31637, CVE-2026-31649, CVE-2026-31657, CVE-2026-31659, CVE-2026-31668,
    CVE-2026-31669, CVE-2026-31682, CVE-2026-31685, CVE-2026-43011, CVE-2026-43033, CVE-2026-43037,
    CVE-2026-43038, CVE-2026-43071, CVE-2026-43077, CVE-2026-43078, CVE-2026-43114, CVE-2026-43117,
    CVE-2026-43186, CVE-2026-43304, CVE-2026-43341, CVE-2026-43383, CVE-2026-43406, CVE-2026-43407,
    CVE-2026-43414, CVE-2026-43493, CVE-2026-43494, CVE-2026-43501, CVE-2026-45988, CVE-2026-46028,
    CVE-2026-46043, CVE-2026-46119, CVE-2026-46135, CVE-2026-46195, CVE-2026-46243)

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

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-8528-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:A");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-46300");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-31431");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'xfrm-ESP Page-Cache Write via CVE-2026-43284');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/04/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1074-xilinx-zynqmp");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');
include('ksplice.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var kernel_mappings = {
  '22.04': {
    '5.15.0': {
      'xilinx-zynqmp': '5.15.0-1074'
    }
  }
};

var host_kernel_release = get_kb_item('Host/uptrack-uname-r');
if (empty_or_null(host_kernel_release)) host_kernel_release = get_kb_item_or_exit('Host/uname-r');
var host_kernel_base_version = get_kb_item_or_exit('Host/Debian/kernel-base-version');
var host_kernel_type = get_kb_item_or_exit('Host/Debian/kernel-type');
if(empty_or_null(kernel_mappings[os_release][host_kernel_base_version][host_kernel_type])) audit(AUDIT_INST_VER_NOT_VULN, 'kernel ' + host_kernel_release);

var extra = '';
var kernel_fixed_version = kernel_mappings[os_release][host_kernel_base_version][host_kernel_type] + "-" + host_kernel_type;
if (deb_ver_cmp(ver1:host_kernel_release, ver2:kernel_fixed_version) < 0)
{
  extra += 'Running Kernel level of ' + host_kernel_release + ' does not meet the minimum fixed level of ' + kernel_fixed_version + ' for this advisory.\n\n';
}
  else
{
  audit(AUDIT_PATCH_INSTALLED, 'Kernel package for USN-8528-1');
}

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  var cve_list = make_list('CVE-2022-48816', 'CVE-2023-53673', 'CVE-2024-35862', 'CVE-2024-50060', 'CVE-2025-37778', 'CVE-2025-37822', 'CVE-2025-37924', 'CVE-2025-38201', 'CVE-2025-40082', 'CVE-2025-68214', 'CVE-2025-68263', 'CVE-2025-71089', 'CVE-2025-71220', 'CVE-2025-71222', 'CVE-2025-71224', 'CVE-2026-23176', 'CVE-2026-23180', 'CVE-2026-23182', 'CVE-2026-23190', 'CVE-2026-23193', 'CVE-2026-23198', 'CVE-2026-23202', 'CVE-2026-23206', 'CVE-2026-23216', 'CVE-2026-23256', 'CVE-2026-23257', 'CVE-2026-23258', 'CVE-2026-23262', 'CVE-2026-23272', 'CVE-2026-23274', 'CVE-2026-23278', 'CVE-2026-23351', 'CVE-2026-23428', 'CVE-2026-23450', 'CVE-2026-23455', 'CVE-2026-31402', 'CVE-2026-31418', 'CVE-2026-31419', 'CVE-2026-31431', 'CVE-2026-31478', 'CVE-2026-31504', 'CVE-2026-31533', 'CVE-2026-31607', 'CVE-2026-31637', 'CVE-2026-31649', 'CVE-2026-31657', 'CVE-2026-31659', 'CVE-2026-31668', 'CVE-2026-31669', 'CVE-2026-31682', 'CVE-2026-31685', 'CVE-2026-43011', 'CVE-2026-43033', 'CVE-2026-43037', 'CVE-2026-43038', 'CVE-2026-43071', 'CVE-2026-43077', 'CVE-2026-43078', 'CVE-2026-43114', 'CVE-2026-43117', 'CVE-2026-43186', 'CVE-2026-43284', 'CVE-2026-43304', 'CVE-2026-43341', 'CVE-2026-43383', 'CVE-2026-43406', 'CVE-2026-43407', 'CVE-2026-43414', 'CVE-2026-43493', 'CVE-2026-43494', 'CVE-2026-43500', 'CVE-2026-43501', 'CVE-2026-43503', 'CVE-2026-45988', 'CVE-2026-46028', 'CVE-2026-46043', 'CVE-2026-46119', 'CVE-2026-46135', 'CVE-2026-46195', 'CVE-2026-46243', 'CVE-2026-46300', 'CVE-2026-46333');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-8528-1');
  }
  else
  {
    extra = extra + ksplice_reporting_text();
  }
}
if (extra) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}