Linux Distros Unpatched Vulnerability : CVE-2022-49945

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

include('compat.inc');

if (description)
{
  script_id(248255);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/21");

  script_cve_id("CVE-2022-49945");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2022-49945");

  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.

  - hwmon: (gpio-fan) Fix array out of bounds access The driver does not check if the cooling state passed to
    gpio_fan_set_cur_state() exceeds the maximum cooling state as stored in fan_data->num_speeds. Since the
    cooling state is later used as an array index in set_fan_speed(), an array out of bounds access can occur.
    This can be exploited by setting the state of the thermal cooling device to arbitrary values, causing for
    example a kernel oops when unavailable memory is accessed this way. Example kernel oops: [ 807.987276]
    Unable to handle kernel paging request at virtual address ffffff80d0588064 [ 807.987369] Mem abort info: [
    807.987398] ESR = 0x96000005 [ 807.987428] EC = 0x25: DABT (current EL), IL = 32 bits [ 807.987477] SET =
    0, FnV = 0 [ 807.987507] EA = 0, S1PTW = 0 [ 807.987536] FSC = 0x05: level 1 translation fault [
    807.987570] Data abort info: [ 807.987763] ISV = 0, ISS = 0x00000005 [ 807.987801] CM = 0, WnR = 0 [
    807.987832] swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000001165000 [ 807.987872] [ffffff80d0588064]
    pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [ 807.987961] Internal error: Oops:
    96000005 [#1] PREEMPT SMP [ 807.987992] Modules linked in: cmac algif_hash aes_arm64 algif_skcipher af_alg
    bnep hci_uart btbcm bluetooth ecdh_generic ecc 8021q garp stp llc snd_soc_hdmi_codec brcmfmac vc4 brcmutil
    cec drm_kms_helper snd_soc_core cfg80211 snd_compress bcm2835_codec(C) snd_pcm_dmaengine syscopyarea
    bcm2835_isp(C) bcm2835_v4l2(C) sysfillrect v4l2_mem2mem bcm2835_mmal_vchiq(C) raspberrypi_hwmon sysimgblt
    videobuf2_dma_contig videobuf2_vmalloc fb_sys_fops videobuf2_memops rfkill videobuf2_v4l2 videobuf2_common
    i2c_bcm2835 snd_bcm2835(C) videodev snd_pcm snd_timer snd mc vc_sm_cma(C) gpio_fan uio_pdrv_genirq uio drm
    fuse drm_panel_orientation_quirks backlight ip_tables x_tables ipv6 [ 807.988508] CPU: 0 PID: 1321 Comm:
    bash Tainted: G C 5.15.56-v8+ #1575 [ 807.988548] Hardware name: Raspberry Pi 3 Model B Rev 1.2 (DT) [
    807.988574] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 807.988608] pc :
    set_fan_speed.part.5+0x34/0x80 [gpio_fan] [ 807.988654] lr : gpio_fan_set_cur_state+0x34/0x50 [gpio_fan] [
    807.988691] sp : ffffffc008cf3bd0 [ 807.988710] x29: ffffffc008cf3bd0 x28: ffffff80019edac0 x27:
    0000000000000000 [ 807.988762] x26: 0000000000000000 x25: 0000000000000000 x24: ffffff800747c920 [
    807.988787] x23: 000000000000000a x22: ffffff800369f000 x21: 000000001999997c [ 807.988854] x20:
    ffffff800369f2e8 x19: ffffff8002ae8080 x18: 0000000000000000 [ 807.988877] x17: 0000000000000000 x16:
    0000000000000000 x15: 000000559e271b70 [ 807.988938] x14: 0000000000000000 x13: 0000000000000000 x12:
    0000000000000000 [ 807.988960] x11: 0000000000000000 x10: ffffffc008cf3c20 x9 : ffffffcfb60c741c [
    807.989018] x8 : 000000000000000a x7 : 00000000ffffffc9 x6 : 0000000000000009 [ 807.989040] x5 :
    000000000000002a x4 : 0000000000000000 x3 : ffffff800369f2e8 [ 807.989062] x2 : 000000000000e780 x1 :
    0000000000000001 x0 : ffffff80d0588060 [ 807.989084] Call trace: [ 807.989091]
    set_fan_speed.part.5+0x34/0x80 [gpio_fan] [ 807.989113] gpio_fan_set_cur_state+0x34/0x50 [gpio_fan] [
    807.989199] cur_state_store+0x84/0xd0 [ 807.989221] dev_attr_store+0x20/0x38 [ 807.989262]
    sysfs_kf_write+0x4c/0x60 [ 807.989282] kernfs_fop_write_iter+0x130/0x1c0 [ 807.989298]
    new_sync_write+0x10c/0x190 [ 807.989315] vfs_write+0x254/0x378 [ 807.989362] ksys_write+0x70/0xf8 [
    807.989379] __arm64_sys_write+0x24/0x30 [ 807.989424] invoke_syscall+0x4c/0x110 [ 807.989442]
    el0_svc_common.constprop.3+0xfc/0x120 [ 807.989458] do_el0_svc+0x2c/0x90 [ 807.989473] el0_svc+0x24/0x60 [
    807.989544] el0t_64_sync_handler+0x90/0xb8 [ 807.989558] el0t_64_sync+0x1a0/0x1a4 [ 807.989579] Code:
    b9403801 f9402800 7100003f 8b35cc00 (b9400416) [ 807.989627] ---[ end t ---truncated--- (CVE-2022-49945)

Note that Nessus relies on the presence of the package as reported by the vendor.");
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  script_set_attribute(attribute:"solution", value:
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  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:C");
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  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H");
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  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-49945");

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  script_set_attribute(attribute:"vuln_publication_date", value:"2025/06/18");
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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": "14.04",
        "pkgs": [
          {"reference": "linux-aws"},
          {"reference": "linux-lts-xenial"}
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          {"reference": "linux-cloud-tools-common"},
          {"reference": "linux-doc"},
          {"reference": "linux-headers-4.4.0"},
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          {"reference": "linux-image-4.4.0"},
          {"reference": "linux-image-extra-4.4.0"},
          {"reference": "linux-kvm"},
          {"reference": "linux-libc-dev"},
          {"reference": "linux-source-4.4.0"},
          {"reference": "linux-tools-4.4.0"},
          {"reference": "linux-tools-common"},
          {"reference": "linux-udebs-generic"},
          {"reference": "linux-udebs-generic-lpae"},
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          {"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-buildinfo-6.8.0"},
          {"reference": "linux-cloud-tools-6.8.0"},
          {"reference": "linux-headers-6.8.0"},
          {"reference": "linux-image-6.8.0"},
          {"reference": "linux-modules-6.8.0"},
          {"reference": "linux-modules-iwlwifi-6.8.0"},
          {"reference": "linux-raspi-realtime"},
          {"reference": "linux-realtime"},
          {"reference": "linux-riscv-headers-6.8.0"},
          {"reference": "linux-riscv-tools-6.8.0"},
          {"reference": "linux-tools-6.8.0"}
        ]
      }
    ]
  }
};

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');
}