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Linux Distros Unpatched Vulnerability : CVE-2022-49944

🗓️ 07 Aug 2025 00:00:00Reported by TenableType 
nessus
 nessus🔗 www.tenable.com👁 3 Views

Unpatched Linux kernel CVE-2022-49944: usb typec ucsi regression causes NULL power sysfs dereference; revert.

Related
Refs
Code
ReporterTitlePublishedViews
Family
AstraLinux		Astra Linux – Vulnerability in Linux 5.10
20 May 202605:53
–astralinux
BDU FSTEC		The vulnerabilities of the functions ucsi_init() and ucsi_unregister() in the driver drivers/usb/typec/ucsi/ucsi.c file of the UCSI driver for the Linux operating system allow a malicious actor to cause service failure remotely.
20 Feb 202600:00
–bdu_fstec
CNNVD		Linux kernel 安全漏洞
18 Jun 202500:00
–cnnvd
CVE		CVE-2022-49944
18 Jun 202510:59
–cve
Cvelist		CVE-2022-49944 Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()"
18 Jun 202510:59
–cvelist
Debian CVE		CVE-2022-49944
18 Jun 202510:59
–debiancve
EUVD		EUVD-2022-55226
3 Oct 202520:07
–euvd
NVD		CVE-2022-49944
18 Jun 202511:15
–nvd
OpenVAS		SUSE: Security Advisory (SUSE-SU-2025:02264-1)
15 Jul 202500:00
–openvas
OSV		CVE-2022-49944 Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()"
18 Jun 202510:59
–osv
Rows per page
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##
# (C) Tenable, Inc.
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  script_set_attribute(attribute:"synopsis", value:
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  - In the Linux kernel, the following vulnerability has been resolved: Revert usb: typec: ucsi: add a common
    function ucsi_unregister_connectors() The recent commit 87d0e2f41b8c (usb: typec: ucsi: add a common
    function ucsi_unregister_connectors()) introduced a regression that caused NULL dereference at reading
    the power supply sysfs. It's a stale sysfs entry that should have been removed but remains with NULL ops.
    The commit changed the error handling to skip the entries after a NULL con->wq, and this leaves the power
    device unreleased. For addressing the regression, the straight revert is applied here. Further code
    improvements can be done from the scratch again. (CVE-2022-49944)

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  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", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
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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")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

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    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
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  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
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          {"reference": "linux-oem-5.6-tools-host"},
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          {"reference": "linux-riscv-5.8"},
          {"reference": "linux-riscv-headers-5.4.0"},
          {"reference": "linux-riscv-tools-5.4.0"},
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          {"reference": "linux-tools-5.6.0"},
          {"reference": "linux-udebs-generic"},
          {"reference": "linux-udebs-oem"}
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  },
  "Ubuntu Linux-22.04": {
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    "constraints": [
      {
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        "pkgs": [
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          {"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"},
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          {"reference": "linux-gcp-5.19"},
          {"reference": "linux-gcp-6.2"},
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          {"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"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "kernel-rt"},
          {"reference": "kernel-rt-core"},
          {"reference": "kernel-rt-debug"},
          {"reference": "kernel-rt-debug-core"},
          {"reference": "kernel-rt-debug-devel"},
          {"reference": "kernel-rt-debug-devel-matched"},
          {"reference": "kernel-rt-debug-kvm"},
          {"reference": "kernel-rt-debug-modules"},
          {"reference": "kernel-rt-debug-modules-core"},
          {"reference": "kernel-rt-debug-modules-extra"},
          {"reference": "kernel-rt-debug-modules-internal"},
          {"reference": "kernel-rt-debug-modules-partner"},
          {"reference": "kernel-rt-devel"},
          {"reference": "kernel-rt-devel-matched"},
          {"reference": "kernel-rt-kvm"},
          {"reference": "kernel-rt-modules"},
          {"reference": "kernel-rt-modules-core"},
          {"reference": "kernel-rt-modules-extra"},
          {"reference": "kernel-rt-modules-internal"},
          {"reference": "kernel-rt-modules-partner"},
          {"reference": "kernel-rt-selftests-internal"}
        ]
      }
    ]
  }
};

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');
}

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5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.5
EPSS0.00175
linux kernelusb typec ucsinull dereferencepower sysfsrevert patch
3