Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992877)

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

include('compat.inc');

if (description)
{
  script_id(281116);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/31");

  script_cve_id("CVE-2023-53141");

  script_name(english:"Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992877)");

  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-2025-992877 advisory.

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

    ila: do not generate empty messages in ila_xlat_nl_cmd_get_mapping()

    ila_xlat_nl_cmd_get_mapping() generates an empty skb,
    triggerring a recent sanity check [1].

    Instead, return an error code, so that user space
    can get it.

    [1]
    skb_assert_len
    WARNING: CPU: 0 PID: 5923 at include/linux/skbuff.h:2527 skb_assert_len include/linux/skbuff.h:2527
    [inline]
    WARNING: CPU: 0 PID: 5923 at include/linux/skbuff.h:2527 __dev_queue_xmit+0x1bc0/0x3488
    net/core/dev.c:4156
    Modules linked in:
    CPU: 0 PID: 5923 Comm: syz-executor269 Not tainted 6.2.0-syzkaller-18300-g2ebd1fbb946d #0
    Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
    pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
    pc : skb_assert_len include/linux/skbuff.h:2527 [inline]
    pc : __dev_queue_xmit+0x1bc0/0x3488 net/core/dev.c:4156
    lr : skb_assert_len include/linux/skbuff.h:2527 [inline]
    lr : __dev_queue_xmit+0x1bc0/0x3488 net/core/dev.c:4156
    sp : ffff80001e0d6c40
    x29: ffff80001e0d6e60 x28: dfff800000000000 x27: ffff0000c86328c0
    x26: dfff800000000000 x25: ffff0000c8632990 x24: ffff0000c8632a00
    x23: 0000000000000000 x22: 1fffe000190c6542 x21: ffff0000c8632a10
    x20: ffff0000c8632a00 x19: ffff80001856e000 x18: ffff80001e0d5fc0
    x17: 0000000000000000 x16: ffff80001235d16c x15: 0000000000000000
    x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001
    x11: ff80800008353a30 x10: 0000000000000000 x9 : 21567eaf25bfb600
    x8 : 21567eaf25bfb600 x7 : 0000000000000001 x6 : 0000000000000001
    x5 : ffff80001e0d6558 x4 : ffff800015c74760 x3 : ffff800008596744
    x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000000e
    Call trace:
    skb_assert_len include/linux/skbuff.h:2527 [inline]
    __dev_queue_xmit+0x1bc0/0x3488 net/core/dev.c:4156
    dev_queue_xmit include/linux/netdevice.h:3033 [inline]
    __netlink_deliver_tap_skb net/netlink/af_netlink.c:307 [inline]
    __netlink_deliver_tap+0x45c/0x6f8 net/netlink/af_netlink.c:325
    netlink_deliver_tap+0xf4/0x174 net/netlink/af_netlink.c:338
    __netlink_sendskb net/netlink/af_netlink.c:1283 [inline]
    netlink_sendskb+0x6c/0x154 net/netlink/af_netlink.c:1292
    netlink_unicast+0x334/0x8d4 net/netlink/af_netlink.c:1380
    nlmsg_unicast include/net/netlink.h:1099 [inline]
    genlmsg_unicast include/net/genetlink.h:433 [inline]
    genlmsg_reply include/net/genetlink.h:443 [inline]
    ila_xlat_nl_cmd_get_mapping+0x620/0x7d0 net/ipv6/ila/ila_xlat.c:493
    genl_family_rcv_msg_doit net/netlink/genetlink.c:968 [inline]
    genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline]
    genl_rcv_msg+0x938/0xc1c net/netlink/genetlink.c:1065
    netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2574
    genl_rcv+0x38/0x50 net/netlink/genetlink.c:1076
    netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
    netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365
    netlink_sendmsg+0x800/0xae0 net/netlink/af_netlink.c:1942
    sock_sendmsg_nosec net/socket.c:714 [inline]
    sock_sendmsg net/socket.c:734 [inline]
    ____sys_sendmsg+0x558/0x844 net/socket.c:2479
    ___sys_sendmsg net/socket.c:2533 [inline]
    __sys_sendmsg+0x26c/0x33c net/socket.c:2562
    __do_sys_sendmsg net/socket.c:2571 [inline]
    __se_sys_sendmsg net/socket.c:2569 [inline]
    __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2569
    __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
    invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
    el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
    do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
    el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
    el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
    el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
    irq event stamp: 136484
    hardirqs last enabled at (136483): [<ffff800008350244>] __up_console_sem+0x60/0xb4
    kernel/printk/printk.c:345
    hardirqs last disabled at (136484): [<ffff800012358d60>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-
    common.c:405
    softirqs last enabled at (136418): [<ffff800008020ea8>] softirq_ha
    ---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-2025-992877
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?945c2cbd");
  # https://lore.kernel.org/linux-cve-announce/2025050238-CVE-2023-53141-e701@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?547bdb96");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2023-53141");
  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-2023-53141");

  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:"2024/06/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/12/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/12/31");

  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:"^20.1060a|20.1070a([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1060a / 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': '1060a',
    'pkgs': [
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070a',
    'pkgs': [
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', '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');
}