Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989643)

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

include('compat.inc');

if (description)
{
  script_id(273977);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2024-54031");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989643)");

  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-2025-989643 advisory.

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

    netfilter: nft_set_hash: unaligned atomic read on struct nft_set_ext

    Access to genmask field in struct nft_set_ext results in unaligned
    atomic read:

    [   72.130109] Unable to handle kernel paging request at virtual address ffff0000c2bb708c
    [   72.131036] Mem abort info:
    [   72.131213]   ESR = 0x0000000096000021
    [   72.131446]   EC = 0x25: DABT (current EL), IL = 32 bits
    [   72.132209]   SET = 0, FnV = 0
    [   72.133216]   EA = 0, S1PTW = 0
    [   72.134080]   FSC = 0x21: alignment fault
    [   72.135593] Data abort info:
    [   72.137194]   ISV = 0, ISS = 0x00000021, ISS2 = 0x00000000
    [   72.142351]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0
    [   72.145989]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
    [   72.150115] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000237d27000
    [   72.154893] [ffff0000c2bb708c] pgd=0000000000000000, p4d=180000023ffff403, pud=180000023f84b403,
    pmd=180000023f835403,
    +pte=0068000102bb7707
    [   72.163021] Internal error: Oops: 0000000096000021 [#1] SMP
    [...]
    [   72.170041] CPU: 7 UID: 0 PID: 54 Comm: kworker/7:0 Tainted: G            E      6.13.0-rc3+ #2
    [   72.170509] Tainted: [E]=UNSIGNED_MODULE
    [   72.170720] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-stable202302-for-qemu 03/01/2023
    [   72.171192] Workqueue: events_power_efficient nft_rhash_gc [nf_tables]
    [   72.171552] pstate: 21400005 (nzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
    [   72.171915] pc : nft_rhash_gc+0x200/0x2d8 [nf_tables]
    [   72.172166] lr : nft_rhash_gc+0x128/0x2d8 [nf_tables]
    [   72.172546] sp : ffff800081f2bce0
    [   72.172724] x29: ffff800081f2bd40 x28: ffff0000c2bb708c x27: 0000000000000038
    [   72.173078] x26: ffff0000c6780ef0 x25: ffff0000c643df00 x24: ffff0000c6778f78
    [   72.173431] x23: 000000000000001a x22: ffff0000c4b1f000 x21: ffff0000c6780f78
    [   72.173782] x20: ffff0000c2bb70dc x19: ffff0000c2bb7080 x18: 0000000000000000
    [   72.174135] x17: ffff0000c0a4e1c0 x16: 0000000000003000 x15: 0000ac26d173b978
    [   72.174485] x14: ffffffffffffffff x13: 0000000000000030 x12: ffff0000c6780ef0
    [   72.174841] x11: 0000000000000000 x10: ffff800081f2bcf8 x9 : ffff0000c3000000
    [   72.175193] x8 : 00000000000004be x7 : 0000000000000000 x6 : 0000000000000000
    [   72.175544] x5 : 0000000000000040 x4 : ffff0000c3000010 x3 : 0000000000000000
    [   72.175871] x2 : 0000000000003a98 x1 : ffff0000c2bb708c x0 : 0000000000000004
    [   72.176207] Call trace:
    [   72.176316]  nft_rhash_gc+0x200/0x2d8 [nf_tables] (P)
    [   72.176653]  process_one_work+0x178/0x3d0
    [   72.176831]  worker_thread+0x200/0x3f0
    [   72.176995]  kthread+0xe8/0xf8
    [   72.177130]  ret_from_fork+0x10/0x20
    [   72.177289] Code: 54fff984 d503201f d2800080 91003261 (f820303f)
    [   72.177557] ---[ end trace 0000000000000000 ]---

    Align struct nft_set_ext to word size to address this and
    documentation it.

    pahole reports that this increases the size of elements for rhash and
    pipapo in 8 bytes on x86_64.

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-2025-989643
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?35a24269");
  # https://lore.kernel.org/linux-cve-announce/2025011532-CVE-2024-54031-f640@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dcdde3d4");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-54031");
  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-2024-54031");

  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:"2025/01/15");
  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');
}