Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992322)

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

include('compat.inc');

if (description)
{
  script_id(280500);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/30");

  script_cve_id("CVE-2023-53089");

  script_name(english:"Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992322)");

  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-2025-992322 advisory.

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

    ext4: fix task hung in ext4_xattr_delete_inode

    Syzbot reported a hung task problem:
    ==================================================================
    INFO: task syz-executor232:5073 blocked for more than 143 seconds.
          Not tainted 6.2.0-rc2-syzkaller-00024-g512dee0c00ad #0
    echo 0 > /proc/sys/kernel/hung_task_timeout_secs disables this message.
    task:syz-exec232 state:D stack:21024 pid:5073 ppid:5072 flags:0x00004004
    Call Trace:
     <TASK>
     context_switch kernel/sched/core.c:5244 [inline]
     __schedule+0x995/0xe20 kernel/sched/core.c:6555
     schedule+0xcb/0x190 kernel/sched/core.c:6631
     __wait_on_freeing_inode fs/inode.c:2196 [inline]
     find_inode_fast+0x35a/0x4c0 fs/inode.c:950
     iget_locked+0xb1/0x830 fs/inode.c:1273
     __ext4_iget+0x22e/0x3ed0 fs/ext4/inode.c:4861
     ext4_xattr_inode_iget+0x68/0x4e0 fs/ext4/xattr.c:389
     ext4_xattr_inode_dec_ref_all+0x1a7/0xe50 fs/ext4/xattr.c:1148
     ext4_xattr_delete_inode+0xb04/0xcd0 fs/ext4/xattr.c:2880
     ext4_evict_inode+0xd7c/0x10b0 fs/ext4/inode.c:296
     evict+0x2a4/0x620 fs/inode.c:664
     ext4_orphan_cleanup+0xb60/0x1340 fs/ext4/orphan.c:474
     __ext4_fill_super fs/ext4/super.c:5516 [inline]
     ext4_fill_super+0x81cd/0x8700 fs/ext4/super.c:5644
     get_tree_bdev+0x400/0x620 fs/super.c:1282
     vfs_get_tree+0x88/0x270 fs/super.c:1489
     do_new_mount+0x289/0xad0 fs/namespace.c:3145
     do_mount fs/namespace.c:3488 [inline]
     __do_sys_mount fs/namespace.c:3697 [inline]
     __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674
     do_syscall_x64 arch/x86/entry/common.c:50 [inline]
     do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
     entry_SYSCALL_64_after_hwframe+0x63/0xcd
    RIP: 0033:0x7fa5406fd5ea
    RSP: 002b:00007ffc7232f968 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
    RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa5406fd5ea
    RDX: 0000000020000440 RSI: 0000000020000000 RDI: 00007ffc7232f970
    RBP: 00007ffc7232f970 R08: 00007ffc7232f9b0 R09: 0000000000000432
    R10: 0000000000804a03 R11: 0000000000000202 R12: 0000000000000004
    R13: 0000555556a7a2c0 R14: 00007ffc7232f9b0 R15: 0000000000000000
     </TASK>
    ==================================================================

    The problem is that the inode contains an xattr entry with ea_inum of 15
    when cleaning up an orphan inode <15>. When evict inode <15>, the reference
    counting of the corresponding EA inode is decreased. When EA inode <15> is
    found by find_inode_fast() in __ext4_iget(), it is found that the EA inode
    holds the I_FREEING flag and waits for the EA inode to complete deletion.
    As a result, when inode <15> is being deleted, we wait for inode <15> to
    complete the deletion, resulting in an infinite loop and triggering Hung
    Task. To solve this problem, we only need to check whether the ino of EA
    inode and parent is the same before getting EA inode.

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-2025-992322
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?064fe6f6");
  # https://lore.kernel.org/linux-cve-announce/2025050219-CVE-2023-53089-b8c6@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?38affa96");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2023-53089");
  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-2023-53089");

  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:"2024/05/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/12/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/12/30");

  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:"^20.1060e|20.1070e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 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': '1060e',
    'pkgs': [
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', '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');
}