Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989264)

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

include('compat.inc');

if (description)
{
  script_id(272885);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2022-49695");

  script_name(english:"Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989264)");

  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-2025-989264 advisory.

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

    igb: fix a use-after-free issue in igb_clean_tx_ring

    Fix the following use-after-free bug in igb_clean_tx_ring routine when
    the NIC is running in XDP mode. The issue can be triggered redirecting
    traffic into the igb NIC and then closing the device while the traffic
    is flowing.

    [   73.322719] CPU: 1 PID: 487 Comm: xdp_redirect Not tainted 5.18.3-apu2 #9
    [   73.330639] Hardware name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017
    [   73.337434] RIP: 0010:refcount_warn_saturate+0xa7/0xf0
    [   73.362283] RSP: 0018:ffffc9000081f798 EFLAGS: 00010282
    [   73.367761] RAX: 0000000000000000 RBX: ffffc90000420f80 RCX: 0000000000000000
    [   73.375200] RDX: ffff88811ad22d00 RSI: ffff88811ad171e0 RDI: ffff88811ad171e0
    [   73.382590] RBP: 0000000000000900 R08: ffffffff82298f28 R09: 0000000000000058
    [   73.390008] R10: 0000000000000219 R11: ffffffff82280f40 R12: 0000000000000090
    [   73.397356] R13: ffff888102343a40 R14: ffff88810359e0e4 R15: 0000000000000000
    [   73.404806] FS:  00007ff38d31d740(0000) GS:ffff88811ad00000(0000) knlGS:0000000000000000
    [   73.413129] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [   73.419096] CR2: 000055cff35f13f8 CR3: 0000000106391000 CR4: 00000000000406e0
    [   73.426565] Call Trace:
    [   73.429087]  <TASK>
    [   73.431314]  igb_clean_tx_ring+0x43/0x140 [igb]
    [   73.436002]  igb_down+0x1d7/0x220 [igb]
    [   73.439974]  __igb_close+0x3c/0x120 [igb]
    [   73.444118]  igb_xdp+0x10c/0x150 [igb]
    [   73.447983]  ? igb_pci_sriov_configure+0x70/0x70 [igb]
    [   73.453362]  dev_xdp_install+0xda/0x110
    [   73.457371]  dev_xdp_attach+0x1da/0x550
    [   73.461369]  do_setlink+0xfd0/0x10f0
    [   73.465166]  ? __nla_validate_parse+0x89/0xc70
    [   73.469714]  rtnl_setlink+0x11a/0x1e0
    [   73.473547]  rtnetlink_rcv_msg+0x145/0x3d0
    [   73.477709]  ? rtnl_calcit.isra.0+0x130/0x130
    [   73.482258]  netlink_rcv_skb+0x8d/0x110
    [   73.486229]  netlink_unicast+0x230/0x340
    [   73.490317]  netlink_sendmsg+0x215/0x470
    [   73.494395]  __sys_sendto+0x179/0x190
    [   73.498268]  ? move_addr_to_user+0x37/0x70
    [   73.502547]  ? __sys_getsockname+0x84/0xe0
    [   73.506853]  ? netlink_setsockopt+0x1c1/0x4a0
    [   73.511349]  ? __sys_setsockopt+0xc8/0x1d0
    [   73.515636]  __x64_sys_sendto+0x20/0x30
    [   73.519603]  do_syscall_64+0x3b/0x80
    [   73.523399]  entry_SYSCALL_64_after_hwframe+0x44/0xae
    [   73.528712] RIP: 0033:0x7ff38d41f20c
    [   73.551866] RSP: 002b:00007fff3b945a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
    [   73.559640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff38d41f20c
    [   73.567066] RDX: 0000000000000034 RSI: 00007fff3b945b30 RDI: 0000000000000003
    [   73.574457] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
    [   73.581852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3b945ab0
    [   73.589179] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fff3b945b30
    [   73.596545]  </TASK>
    [   73.598842] ---[ end trace 0000000000000000 ]---

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-2025-989264
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?655a00b6");
  # https://lore.kernel.org/linux-cve-announce/2025022628-CVE-2022-49695-59b3@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f4a8cae0");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-49695");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:M/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-2022-49695");

  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:"2022/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/05");

  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:"^20.1070a([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1070a', '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 && 'loongarch64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1070a',
    'pkgs': [
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070a', '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');
}