Linux Distros Unpatched Vulnerability : CVE-2026-99248

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

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  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/11/05");

  script_cve_id("CVE-2026-99248");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-99248");

  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.

  - i2c: xiic: restore non-managed runtime PM to fix clk WARN flood The devres conversion replaced manual
    pm_runtime_enable()/disable() with devm_pm_runtime_set_active_enabled() and dropped the remove-time
    runtime PM teardown. The managed release tears runtime PM down in the wrong order: it calls
    pm_runtime_dont_use_autosuspend() before pm_runtime_disable(), i.e. while runtime PM is still enabled, and
    devres is LIFO so the devm_clk_get_enabled() release runs afterwards. At remove(), pm_runtime_put_sync()
    leaves the device active with the autosuspend timer armed. Clearing use_autosuspend then makes rpm_idle()
    suspend immediately, and xiic_i2c_runtime_suspend() clk_disable()s the clock. The later
    devm_clk_get_enabled() release clk_disable_unprepare()s the already-disabled clock, so clk_core_disable()
    WARNs (clkN already disabled) on every teardown. Drop the managed helper and restore the non-managed
    runtime PM setup and teardown, so runtime PM is enabled once in probe and disabled once in remove and the
    clock enable count stays balanced. Order the remove teardown so runtime PM is disabled before the usage
    count is dropped: pm_runtime_disable() followed by pm_runtime_put_noidle() instead of
    pm_runtime_put_sync(). Dropping the count first with autosuspend still enabled arms the autosuspend timer,
    and a preemption before pm_runtime_disable() lets it expire, suspend the device and clk_disable() the
    clock, which the devm release then disables again - the same WARN. Restore the non-managed IRQ request as
    well. The probe error paths now unwind runtime PM by hand via goto, and a devm-registered handler is only
    freed later during devres unwind, so it would stay live across the manual teardown (and across any future
    failing step added after it). Request the IRQ with request_threaded_irq() and free it explicitly in the
    probe error path and in remove. The probe error path also clears use_autosuspend, to match the teardown in
    remove(). (CVE-2026-99248)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-99248");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-99248");
  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:M/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:H/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-2026-99248");

  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:"2026/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/11/03");

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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 = {
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    "package_manager": "dpkg-l",
    "constraints": [
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        "release": "14",
        "pkgs": [
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          {"reference": "hyperv-daemons"},
          {"reference": "intel-sdsi"},
          {"reference": "libcpupower-dev"},
          {"reference": "libcpupower1"},
          {"reference": "linux-base-7.2.12+deb14-alpha-generic"},
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          {"reference": "linux-base-7.2.12+deb14-arm64"},
          {"reference": "linux-base-7.2.12+deb14-arm64-16k"},
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  },
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    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "linux-allwinner-5.19"},
          {"reference": "linux-aws-5.19"},
          {"reference": "linux-aws-6.2"},
          {"reference": "linux-aws-6.5"},
          {"reference": "linux-azure-5.19"},
          {"reference": "linux-azure-6.2"},
          {"reference": "linux-azure-6.5"},
          {"reference": "linux-azure-fde-5.19"},
          {"reference": "linux-azure-fde-6.2"},
          {"reference": "linux-buildinfo-5.15.0"},
          {"reference": "linux-buildinfo-5.17.0"},
          {"reference": "linux-cloud-tools-5.15.0"},
          {"reference": "linux-cloud-tools-5.17.0"},
          {"reference": "linux-gcp-5.19"},
          {"reference": "linux-gcp-6.2"},
          {"reference": "linux-gcp-6.5"},
          {"reference": "linux-headers-5.15.0"},
          {"reference": "linux-headers-5.17.0"},
          {"reference": "linux-hwe-5.19"},
          {"reference": "linux-hwe-6.2"},
          {"reference": "linux-hwe-6.5"},
          {"reference": "linux-image-5.15.0"},
          {"reference": "linux-image-unsigned-5.17.0"},
          {"reference": "linux-intel-iot-realtime"},
          {"reference": "linux-lowlatency-hwe-5.19"},
          {"reference": "linux-lowlatency-hwe-6.2"},
          {"reference": "linux-lowlatency-hwe-6.5"},
          {"reference": "linux-modules-5.15.0"},
          {"reference": "linux-modules-5.17.0"},
          {"reference": "linux-modules-extra-5.15.0"},
          {"reference": "linux-modules-extra-5.17.0"},
          {"reference": "linux-nvidia-6.2"},
          {"reference": "linux-nvidia-6.5"},
          {"reference": "linux-oem-5.17-headers-5.17.0"},
          {"reference": "linux-oem-5.17-tools-5.17.0"},
          {"reference": "linux-oem-5.17-tools-host"},
          {"reference": "linux-oem-6.0"},
          {"reference": "linux-oem-6.1"},
          {"reference": "linux-oem-6.5"},
          {"reference": "linux-oracle-6.5"},
          {"reference": "linux-realtime"},
          {"reference": "linux-riscv-5.19"},
          {"reference": "linux-riscv-6.5"},
          {"reference": "linux-riscv-headers-5.15.0"},
          {"reference": "linux-riscv-tools-5.15.0"},
          {"reference": "linux-starfive-5.19"},
          {"reference": "linux-starfive-6.2"},
          {"reference": "linux-starfive-6.5"},
          {"reference": "linux-tools-5.15.0"},
          {"reference": "linux-tools-5.17.0"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "linux-aws-6.14"},
          {"reference": "linux-aws-6.17"},
          {"reference": "linux-azure-6.11"},
          {"reference": "linux-azure-6.14"},
          {"reference": "linux-azure-6.17"},
          {"reference": "linux-azure-fde-6.14"},
          {"reference": "linux-azure-fde-6.17"},
          {"reference": "linux-azure-nvidia-6.14"},
          {"reference": "linux-buildinfo-6.8.0"},
          {"reference": "linux-cloud-tools-6.8.0"},
          {"reference": "linux-gcp-6.11"},
          {"reference": "linux-gcp-6.14"},
          {"reference": "linux-gcp-6.17"},
          {"reference": "linux-headers-6.8.0"},
          {"reference": "linux-hwe-6.11"},
          {"reference": "linux-hwe-6.14"},
          {"reference": "linux-image-6.8.0"},
          {"reference": "linux-image-unsigned-6.8.0"},
          {"reference": "linux-lowlatency-hwe-6.11"},
          {"reference": "linux-modules-6.8.0"},
          {"reference": "linux-modules-extra-6.8.0"},
          {"reference": "linux-modules-ipu6-6.8.0"},
          {"reference": "linux-modules-iwlwifi-6.8.0"},
          {"reference": "linux-nvidia-6.11"},
          {"reference": "linux-nvidia-6.17"},
          {"reference": "linux-oem-6.11"},
          {"reference": "linux-oem-6.14"},
          {"reference": "linux-oem-6.8-headers-6.8.0"},
          {"reference": "linux-oem-6.8-lib-rust-6.8.0"},
          {"reference": "linux-oem-6.8-tools-6.8.0"},
          {"reference": "linux-oracle-6.14"},
          {"reference": "linux-oracle-6.17"},
          {"reference": "linux-raspi-realtime"},
          {"reference": "linux-realtime"},
          {"reference": "linux-riscv-6.14"},
          {"reference": "linux-riscv-6.17"},
          {"reference": "linux-riscv-headers-6.8.0"},
          {"reference": "linux-riscv-tools-6.8.0"},
          {"reference": "linux-tools-6.8.0"}
        ]
      }
    ]
  },
  "Ubuntu Linux-26.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "26.10",
        "pkgs": [
          {"reference": "bpftool"},
          {"reference": "linux-aws-cloud-tools-7.3.0"},
          {"reference": "linux-aws-headers-7.3.0"},
          {"reference": "linux-aws-tools-7.3.0"},
          {"reference": "linux-azure-cloud-tools-7.3.0"},
          {"reference": "linux-azure-fde-cloud-tools-7.3.0"},
          {"reference": "linux-azure-fde-headers-7.3.0"},
          {"reference": "linux-azure-fde-tools-7.3.0"},
          {"reference": "linux-azure-headers-7.3.0"},
          {"reference": "linux-azure-tools-7.3.0"},
          {"reference": "linux-bpf-dev"},
          {"reference": "linux-buildinfo-7.3.0"},
          {"reference": "linux-cloud-tools-7.3.0"},
          {"reference": "linux-cloud-tools-common"},
          {"reference": "linux-doc"},
          {"reference": "linux-gcp-headers-7.3.0"},
          {"reference": "linux-gcp-tools-7.3.0"},
          {"reference": "linux-headers-7.3.0"},
          {"reference": "linux-image-7.3.0"},
          {"reference": "linux-image-unsigned-7.3.0"},
          {"reference": "linux-lib-rust-7.3.0"},
          {"reference": "linux-libc-dev"},
          {"reference": "linux-modules-7.3.0"},
          {"reference": "linux-modules-extra-7.3.0"},
          {"reference": "linux-oracle-headers-7.3.0"},
          {"reference": "linux-oracle-tools-7.3.0"},
          {"reference": "linux-perf"},
          {"reference": "linux-raspi-headers-7.3.0"},
          {"reference": "linux-raspi-tools-7.3.0"},
          {"reference": "linux-realtime-cloud-tools-7.3.0"},
          {"reference": "linux-realtime-headers-7.3.0"},
          {"reference": "linux-realtime-tools-7.3.0"},
          {"reference": "linux-riscv-headers-7.3.0"},
          {"reference": "linux-riscv-tools-7.3.0"},
          {"reference": "linux-source-7.3.0"},
          {"reference": "linux-tools-7.3.0"},
          {"reference": "linux-tools-common"},
          {"reference": "linux-tools-host"},
          {"reference": "linux-udebs-aws"},
          {"reference": "linux-udebs-aws-64k"},
          {"reference": "linux-udebs-azure"},
          {"reference": "linux-udebs-azure-fde"}
        ]
      }
    ]
  }
};

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 third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

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');
}