Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986905)

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

include('compat.inc');

if (description)
{
  script_id(268450);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/15");

  script_cve_id("CVE-2022-48875");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986905)");

  script_set_attribute(attribute:"synopsis", value:
"The Unity Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the
UTSA-2025-986905 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    wifi: mac80211: sdata can be NULL during AMPDU start

    ieee80211_tx_ba_session_handle_start() may get NULL for sdata when a
    deauthentication is ongoing.

    Here a trace triggering the race with the hostapd test
    multi_ap_fronthaul_on_ap:

    (gdb) list *drv_ampdu_action+0x46
    0x8b16 is in drv_ampdu_action (net/mac80211/driver-ops.c:396).
    391             int ret = -EOPNOTSUPP;
    392
    393             might_sleep();
    394
    395             sdata = get_bss_sdata(sdata);
    396             if (!check_sdata_in_driver(sdata))
    397                     return -EIO;
    398
    399             trace_drv_ampdu_action(local, sdata, params);
    400

    wlan0: moving STA 02:00:00:00:03:00 to state 3
    wlan0: associated
    wlan0: deauthenticating from 02:00:00:00:03:00 by local choice (Reason: 3=DEAUTH_LEAVING)
    wlan3.sta1: Open BA session requested for 02:00:00:00:00:00 tid 0
    wlan3.sta1: dropped frame to 02:00:00:00:00:00 (unauthorized port)
    wlan0: moving STA 02:00:00:00:03:00 to state 2
    wlan0: moving STA 02:00:00:00:03:00 to state 1
    wlan0: Removed STA 02:00:00:00:03:00
    wlan0: Destroyed STA 02:00:00:00:03:00
    BUG: unable to handle page fault for address: fffffffffffffb48
    PGD 11814067 P4D 11814067 PUD 11816067 PMD 0
    Oops: 0000 [#1] PREEMPT SMP PTI
    CPU: 2 PID: 133397 Comm: kworker/u16:1 Tainted: G        W          6.1.0-rc8-wt+ #59
    Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014
    Workqueue: phy3 ieee80211_ba_session_work [mac80211]
    RIP: 0010:drv_ampdu_action+0x46/0x280 [mac80211]
    Code: 53 48 89 f3 be 89 01 00 00 e8 d6 43 bf ef e8 21 46 81 f0 83 bb a0 1b 00 00 04 75 0e 48 8b 9b 28 0d
    00 00 48 81 eb 10 0e 00 00 <8b> 93 58 09 00 00 f6 c2 20 0f 84 3b 01 00 00 8b 05 dd 1c 0f 00 85
    RSP: 0018:ffffc900025ebd20 EFLAGS: 00010287
    RAX: 0000000000000000 RBX: fffffffffffff1f0 RCX: ffff888102228240
    RDX: 0000000080000000 RSI: ffffffff918c5de0 RDI: ffff888102228b40
    RBP: ffffc900025ebd40 R08: 0000000000000001 R09: 0000000000000001
    R10: 0000000000000001 R11: 0000000000000000 R12: ffff888118c18ec0
    R13: 0000000000000000 R14: ffffc900025ebd60 R15: ffff888018b7efb8
    FS:  0000000000000000(0000) GS:ffff88817a600000(0000) knlGS:0000000000000000
    CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    CR2: fffffffffffffb48 CR3: 0000000105228006 CR4: 0000000000170ee0
    Call Trace:
     <TASK>
     ieee80211_tx_ba_session_handle_start+0xd0/0x190 [mac80211]
     ieee80211_ba_session_work+0xff/0x2e0 [mac80211]
     process_one_work+0x29f/0x620
     worker_thread+0x4d/0x3d0
     ? process_one_work+0x620/0x620
     kthread+0xfb/0x120
     ? kthread_complete_and_exit+0x20/0x20
     ret_from_fork+0x22/0x30
     </TASK>

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://src.uniontech.com/#/security_advisory_detail?utsa_id=UTSA-2025-986905
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?319867f5");
  # https://lore.kernel.org/linux-cve-announce/2024082106-CVE-2022-48875-b68f@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?21d38d6e");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-48875");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C");
  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-2022-48875");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/08/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/07");

  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:"Unity Linux Local Security Checks");

  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/local_checks_enabled", "Host/UOS-Server/release", "Host/UOS-Server/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'UOS Server' >!< os_product) audit(AUDIT_OS_NOT, 'UOS Server');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'UOS Server');
if (! preg(pattern:"^20.1070e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1070e', 'UOS Server ' + os_version);

if (!get_kb_item('Host/UOS-Server/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && 'amd64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-5.10.0-74.16', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.16', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.16', 'sp':'1070e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}


if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel');
}