Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989871)

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

include('compat.inc');

if (description)
{
  script_id(272999);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2022-49255");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989871)");

  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-2025-989871 advisory.

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

    f2fs: fix missing free nid in f2fs_handle_failed_inode

    This patch fixes xfstests/generic/475 failure.

    [  293.680694] F2FS-fs (dm-1): May loss orphan inode, run fsck to fix.
    [  293.685358] Buffer I/O error on dev dm-1, logical block 8388592, async page read
    [  293.691527] Buffer I/O error on dev dm-1, logical block 8388592, async page read
    [  293.691764] sh (7615): drop_caches: 3
    [  293.691819] sh (7616): drop_caches: 3
    [  293.694017] Buffer I/O error on dev dm-1, logical block 1, async page read
    [  293.695659] sh (7618): drop_caches: 3
    [  293.696979] sh (7617): drop_caches: 3
    [  293.700290] sh (7623): drop_caches: 3
    [  293.708621] sh (7626): drop_caches: 3
    [  293.711386] sh (7628): drop_caches: 3
    [  293.711825] sh (7627): drop_caches: 3
    [  293.716738] sh (7630): drop_caches: 3
    [  293.719613] sh (7632): drop_caches: 3
    [  293.720971] sh (7633): drop_caches: 3
    [  293.727741] sh (7634): drop_caches: 3
    [  293.730783] sh (7636): drop_caches: 3
    [  293.732681] sh (7635): drop_caches: 3
    [  293.732988] sh (7637): drop_caches: 3
    [  293.738836] sh (7639): drop_caches: 3
    [  293.740568] sh (7641): drop_caches: 3
    [  293.743053] sh (7640): drop_caches: 3
    [  293.821889] ------------[ cut here ]------------
    [  293.824654] kernel BUG at fs/f2fs/node.c:3334!
    [  293.826226] invalid opcode: 0000 [#1] PREEMPT SMP PTI
    [  293.828713] CPU: 0 PID: 7653 Comm: umount Tainted: G           OE     5.17.0-rc1-custom #1
    [  293.830946] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
    [  293.832526] RIP: 0010:f2fs_destroy_node_manager+0x33f/0x350 [f2fs]
    [  293.833905] Code: e8 d6 3d f9 f9 48 8b 45 d0 65 48 2b 04 25 28 00 00 00 75 1a 48 81 c4 28 03 00 00 5b
    41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b
    [  293.837783] RSP: 0018:ffffb04ec31e7a20 EFLAGS: 00010202
    [  293.839062] RAX: 0000000000000001 RBX: ffff9df947db2eb8 RCX: 0000000080aa0072
    [  293.840666] RDX: 0000000000000000 RSI: ffffe86c0432a140 RDI: ffffffffc0b72a21
    [  293.842261] RBP: ffffb04ec31e7d70 R08: ffff9df94ca85780 R09: 0000000080aa0072
    [  293.843909] R10: ffff9df94ca85700 R11: ffff9df94e1ccf58 R12: ffff9df947db2e00
    [  293.845594] R13: ffff9df947db2ed0 R14: ffff9df947db2eb8 R15: ffff9df947db2eb8
    [  293.847855] FS:  00007f5a97379800(0000) GS:ffff9dfa77c00000(0000) knlGS:0000000000000000
    [  293.850647] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [  293.852940] CR2: 00007f5a97528730 CR3: 000000010bc76005 CR4: 0000000000370ef0
    [  293.854680] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    [  293.856423] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
    [  293.858380] Call Trace:
    [  293.859302]  <TASK>
    [  293.860311]  ? ttwu_do_wakeup+0x1c/0x170
    [  293.861800]  ? ttwu_do_activate+0x6d/0xb0
    [  293.863057]  ? _raw_spin_unlock_irqrestore+0x29/0x40
    [  293.864411]  ? try_to_wake_up+0x9d/0x5e0
    [  293.865618]  ? debug_smp_processor_id+0x17/0x20
    [  293.866934]  ? debug_smp_processor_id+0x17/0x20
    [  293.868223]  ? free_unref_page+0xbf/0x120
    [  293.869470]  ? __free_slab+0xcb/0x1c0
    [  293.870614]  ? preempt_count_add+0x7a/0xc0
    [  293.871811]  ? __slab_free+0xa0/0x2d0
    [  293.872918]  ? __wake_up_common_lock+0x8a/0xc0
    [  293.874186]  ? __slab_free+0xa0/0x2d0
    [  293.875305]  ? free_inode_nonrcu+0x20/0x20
    [  293.876466]  ? free_inode_nonrcu+0x20/0x20
    [  293.877650]  ? debug_smp_processor_id+0x17/0x20
    [  293.878949]  ? call_rcu+0x11a/0x240
    [  293.880060]  ? f2fs_destroy_stats+0x59/0x60 [f2fs]
    [  293.881437]  ? kfree+0x1fe/0x230
    [  293.882674]  f2fs_put_super+0x160/0x390 [f2fs]
    [  293.883978]  generic_shutdown_super+0x7a/0x120
    [  293.885274]  kill_block_super+0x27/0x50
    [  293.886496]  kill_f2fs_super+0x7f/0x100 [f2fs]
    [  293.887806]  deactivate_locked_super+0x35/0xa0
    [  293.889271]  deactivate_super+0x40/0x50
    [  293.890513]  cleanup_mnt+0x139/0x190
    [  293.891689]  __cleanup_mnt+0x12/0x20
    [  293.892850]  task_work_run+0x64/0xa0
    [  293.894035]  exit_to_user_mode_prepare+0x1b7/
    ---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-2025-989871
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?487d4053");
  # https://lore.kernel.org/linux-cve-announce/2025022627-CVE-2022-49255-68f3@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5bb950e8");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-49255");
  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-2022-49255");

  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:"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:"^20.1070e([^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-5.10.0-79.4.2', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', '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');
}