Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-107267)

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

include('compat.inc');

if (description)
{
  script_id(344979);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/11");

  script_cve_id("CVE-2022-49328");

  script_name(english:"Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-107267)");

  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-2026-107267 advisory.

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

    mt76: fix use-after-free by removing a non-RCU wcid pointer

    Fixes an issue caught by KASAN about use-after-free in mt76_txq_schedule
    by protecting mtxq->wcid with rcu_lock between mt76_txq_schedule and
    sta_info_[alloc, free].

    [18853.876689] ==================================================================
    [18853.876751] BUG: KASAN: use-after-free in mt76_txq_schedule+0x204/0xaf8 [mt76]
    [18853.876773] Read of size 8 at addr ffffffaf989a2138 by task mt76-tx phy0/883
    [18853.876786]
    [18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 Not tainted 5.10.100-fix-510-56778d365941-kasan #5
    0b01fbbcf41a530f52043508fec2e31a4215

    [18853.876840] Call trace:
    [18853.876861]  dump_backtrace+0x0/0x3ec
    [18853.876878]  show_stack+0x20/0x2c
    [18853.876899]  dump_stack+0x11c/0x1ac
    [18853.876918]  print_address_description+0x74/0x514
    [18853.876934]  kasan_report+0x134/0x174
    [18853.876948]  __asan_report_load8_noabort+0x44/0x50
    [18853.876976]  mt76_txq_schedule+0x204/0xaf8 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]
    [18853.877002]  mt76_txq_schedule_all+0x2c/0x48 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]
    [18853.877030]  mt7921_tx_worker+0xa0/0x1cc [mt7921_common f0875ebac9d7b4754e1010549e7db50fbd90a047]
    [18853.877054]  __mt76_worker_fn+0x190/0x22c [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]
    [18853.877071]  kthread+0x2f8/0x3b8
    [18853.877087]  ret_from_fork+0x10/0x30
    [18853.877098]
    [18853.877112] Allocated by task 941:
    [18853.877131]  kasan_save_stack+0x38/0x68
    [18853.877147]  __kasan_kmalloc+0xd4/0xfc
    [18853.877163]  kasan_kmalloc+0x10/0x1c
    [18853.877177]  __kmalloc+0x264/0x3c4
    [18853.877294]  sta_info_alloc+0x460/0xf88 [mac80211]
    [18853.877410]  ieee80211_prep_connection+0x204/0x1ee0 [mac80211]
    [18853.877523]  ieee80211_mgd_auth+0x6c4/0xa4c [mac80211]
    [18853.877635]  ieee80211_auth+0x20/0x2c [mac80211]
    [18853.877733]  rdev_auth+0x7c/0x438 [cfg80211]
    [18853.877826]  cfg80211_mlme_auth+0x26c/0x390 [cfg80211]
    [18853.877919]  nl80211_authenticate+0x6d4/0x904 [cfg80211]
    [18853.877938]  genl_rcv_msg+0x748/0x93c
    [18853.877954]  netlink_rcv_skb+0x160/0x2a8
    [18853.877969]  genl_rcv+0x3c/0x54
    [18853.877985]  netlink_unicast_kernel+0x104/0x1ec
    [18853.877999]  netlink_unicast+0x178/0x268
    [18853.878015]  netlink_sendmsg+0x3cc/0x5f0
    [18853.878030]  sock_sendmsg+0xb4/0xd8
    [18853.878043]  ____sys_sendmsg+0x2f8/0x53c
    [18853.878058]  ___sys_sendmsg+0xe8/0x150
    [18853.878071]  __sys_sendmsg+0xc4/0x1f4
    [18853.878087]  __arm64_compat_sys_sendmsg+0x88/0x9c
    [18853.878101]  el0_svc_common+0x1b4/0x390
    [18853.878115]  do_el0_svc_compat+0x8c/0xdc
    [18853.878131]  el0_svc_compat+0x10/0x1c
    [18853.878146]  el0_sync_compat_handler+0xa8/0xcc
    [18853.878161]  el0_sync_compat+0x188/0x1c0
    [18853.878171]
    [18853.878183] Freed by task 10927:
    [18853.878200]  kasan_save_stack+0x38/0x68
    [18853.878215]  kasan_set_track+0x28/0x3c
    [18853.878228]  kasan_set_free_info+0x24/0x48
    [18853.878244]  __kasan_slab_free+0x11c/0x154
    [18853.878259]  kasan_slab_free+0x14/0x24
    [18853.878273]  slab_free_freelist_hook+0xac/0x1b0
    [18853.878287]  kfree+0x104/0x390
    [18853.878402]  sta_info_free+0x198/0x210 [mac80211]
    [18853.878515]  __sta_info_destroy_part2+0x230/0x2d4 [mac80211]
    [18853.878628]  __sta_info_flush+0x300/0x37c [mac80211]
    [18853.878740]  ieee80211_set_disassoc+0x2cc/0xa7c [mac80211]
    [18853.878851]  ieee80211_mgd_deauth+0x4a4/0x10a0 [mac80211]
    [18853.878962]  ieee80211_deauth+0x20/0x2c [mac80211]
    [18853.879057]  rdev_deauth+0x7c/0x438 [cfg80211]
    [18853.879150]  cfg80211_mlme_deauth+0x274/0x414 [cfg80211]
    [18853.879243]  cfg80211_mlme_down+0xe4/0x118 [cfg80211]
    [18853.879335]  cfg80211_disconnect+0x218/0x2d8 [cfg80211]
    [18853.879427]  __cfg80211_leave+0x17c/0x240 [cfg80211]
    [18853.879519]  cfg80211_leave+0x3c/0x58 [cfg80211]
    [18853.879611]  wiphy_suspend+0xdc/0x200 [cfg80211]
    [18853.879628]  dpm_run_callback+0x58/0x408
    [18853.879642]  __device_suspend+0x4cc/0x864
    [18853.879658]  async_suspend+0x34/0xf4
    [18
    ---truncated---

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-2026-107267
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3ff0022a");
  script_set_attribute(attribute:"see_also", value:"https://atomgit.com/src-openeuler/kernel/issues/11747");
  # https://lore.kernel.org/linux-cve-announce/2025022638-CVE-2022-49328-ec2f@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a945b6a8");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-49328");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:C/I:C/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:H/I:H/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-2022-49328");

  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:"2025/02/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/11");

  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) 2026 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:"^(20.1050e|20.1060e|20.1070e)([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1050e / 20.1060e / 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': '1050e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2305.1.0.0199.122.uel20', 'sp':'1050e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2305.1.0.0199.122.uel20', 'sp':'1050e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2305.1.0.0199.122.uel20', 'sp':'1050e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1060e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2311.4.0.0227.122.uel20', 'sp':'1060e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2311.4.0.0227.122.uel20', 'sp':'1060e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2311.4.0.0227.122.uel20', 'sp':'1060e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2601.1.0.0023.uel20', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2601.1.0.0023.uel20', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2601.1.0.0023.uel20', '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_HOLE,
      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');
}