Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987582)

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

include('compat.inc');

if (description)
{
  script_id(271071);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/21");

  script_cve_id("CVE-2022-49282");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987582)");

  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-2025-987582 advisory.

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

    f2fs: quota: fix loop condition at f2fs_quota_sync()

    cnt should be passed to sb_has_quota_active() instead of type to check
    active quota properly.

    Moreover, when the type is -1, the compiler with enough inline knowledge
    can discard sb_has_quota_active() check altogether, causing a NULL pointer
    dereference at the following inode_lock(dqopt->files[cnt]):

    [    2.796010] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a0
    [    2.796024] Mem abort info:
    [    2.796025]   ESR = 0x96000005
    [    2.796028]   EC = 0x25: DABT (current EL), IL = 32 bits
    [    2.796029]   SET = 0, FnV = 0
    [    2.796031]   EA = 0, S1PTW = 0
    [    2.796032] Data abort info:
    [    2.796034]   ISV = 0, ISS = 0x00000005
    [    2.796035]   CM = 0, WnR = 0
    [    2.796046] user pgtable: 4k pages, 39-bit VAs, pgdp=00000003370d1000
    [    2.796048] [00000000000000a0] pgd=0000000000000000, pud=0000000000000000
    [    2.796051] Internal error: Oops: 96000005 [#1] PREEMPT SMP
    [    2.796056] CPU: 7 PID: 640 Comm: f2fs_ckpt-259:7 Tainted: G S
    5.4.179-arter97-r8-64666-g2f16e087f9d8 #1
    [    2.796057] Hardware name: Qualcomm Technologies, Inc. Lahaina MTP lemonadep (DT)
    [    2.796059] pstate: 80c00005 (Nzcv daif +PAN +UAO)
    [    2.796065] pc : down_write+0x28/0x70
    [    2.796070] lr : f2fs_quota_sync+0x100/0x294
    [    2.796071] sp : ffffffa3f48ffc30
    [    2.796073] x29: ffffffa3f48ffc30 x28: 0000000000000000
    [    2.796075] x27: ffffffa3f6d718b8 x26: ffffffa415fe9d80
    [    2.796077] x25: ffffffa3f7290048 x24: 0000000000000001
    [    2.796078] x23: 0000000000000000 x22: ffffffa3f7290000
    [    2.796080] x21: ffffffa3f72904a0 x20: ffffffa3f7290110
    [    2.796081] x19: ffffffa3f77a9800 x18: ffffffc020aae038
    [    2.796083] x17: ffffffa40e38e040 x16: ffffffa40e38e6d0
    [    2.796085] x15: ffffffa40e38e6cc x14: ffffffa40e38e6d0
    [    2.796086] x13: 00000000000004f6 x12: 00162c44ff493000
    [    2.796088] x11: 0000000000000400 x10: ffffffa40e38c948
    [    2.796090] x9 : 0000000000000000 x8 : 00000000000000a0
    [    2.796091] x7 : 0000000000000000 x6 : 0000d1060f00002a
    [    2.796093] x5 : ffffffa3f48ff718 x4 : 000000000000000d
    [    2.796094] x3 : 00000000060c0000 x2 : 0000000000000001
    [    2.796096] x1 : 0000000000000000 x0 : 00000000000000a0
    [    2.796098] Call trace:
    [    2.796100]  down_write+0x28/0x70
    [    2.796102]  f2fs_quota_sync+0x100/0x294
    [    2.796104]  block_operations+0x120/0x204
    [    2.796106]  f2fs_write_checkpoint+0x11c/0x520
    [    2.796107]  __checkpoint_and_complete_reqs+0x7c/0xd34
    [    2.796109]  issue_checkpoint_thread+0x6c/0xb8
    [    2.796112]  kthread+0x138/0x414
    [    2.796114]  ret_from_fork+0x10/0x18
    [    2.796117] Code: aa0803e0 aa1f03e1 52800022 aa0103e9 (c8e97d02)
    [    2.796120] ---[ end trace 96e942e8eb6a0b53 ]---
    [    2.800116] Kernel panic - not syncing: Fatal exception
    [    2.800120] SMP: stopping secondary CPUs

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-2025-987582
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3b879704");
  # https://lore.kernel.org/linux-cve-announce/2025022632-CVE-2022-49282-9868@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9c3e3a55");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-49282");
  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-2022-49282");

  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:"2025/10/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/21");

  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-5.10.0-74.15', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.15', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.15', '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');
}