Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013369)

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

include('compat.inc');

if (description)
{
  script_id(307967);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/21");

  script_cve_id("CVE-2023-54257");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013369)");

  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-2026-013369 advisory.

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

    net: macb: fix a memory corruption in extended buffer descriptor mode

    For quite some time we were chasing a bug which looked like a sudden
    permanent failure of networking and mmc on some of our devices.
    The bug was very sensitive to any software changes and even more to
    any kernel debug options.

    Finally we got a setup where the problem was reproducible with
    CONFIG_DMA_API_DEBUG=y and it revealed the issue with the rx dma:

    [   16.992082] ------------[ cut here ]------------
    [   16.996779] DMA-API: macb ff0b0000.ethernet: device driver tries to free DMA memory it has not
    allocated [device address=0x0000000875e3e244] [size=1536 bytes]
    [   17.011049] WARNING: CPU: 0 PID: 85 at kernel/dma/debug.c:1011 check_unmap+0x6a0/0x900
    [   17.018977] Modules linked in: xxxxx
    [   17.038823] CPU: 0 PID: 85 Comm: irq/55-8000f000 Not tainted 5.4.0 #28
    [   17.045345] Hardware name: xxxxx
    [   17.049528] pstate: 60000005 (nZCv daif -PAN -UAO)
    [   17.054322] pc : check_unmap+0x6a0/0x900
    [   17.058243] lr : check_unmap+0x6a0/0x900
    [   17.062163] sp : ffffffc010003c40
    [   17.065470] x29: ffffffc010003c40 x28: 000000004000c03c
    [   17.070783] x27: ffffffc010da7048 x26: ffffff8878e38800
    [   17.076095] x25: ffffff8879d22810 x24: ffffffc010003cc8
    [   17.081407] x23: 0000000000000000 x22: ffffffc010a08750
    [   17.086719] x21: ffffff8878e3c7c0 x20: ffffffc010acb000
    [   17.092032] x19: 0000000875e3e244 x18: 0000000000000010
    [   17.097343] x17: 0000000000000000 x16: 0000000000000000
    [   17.102647] x15: ffffff8879e4a988 x14: 0720072007200720
    [   17.107959] x13: 0720072007200720 x12: 0720072007200720
    [   17.113261] x11: 0720072007200720 x10: 0720072007200720
    [   17.118565] x9 : 0720072007200720 x8 : 000000000000022d
    [   17.123869] x7 : 0000000000000015 x6 : 0000000000000098
    [   17.129173] x5 : 0000000000000000 x4 : 0000000000000000
    [   17.134475] x3 : 00000000ffffffff x2 : ffffffc010a1d370
    [   17.139778] x1 : b420c9d75d27bb00 x0 : 0000000000000000
    [   17.145082] Call trace:
    [   17.147524]  check_unmap+0x6a0/0x900
    [   17.151091]  debug_dma_unmap_page+0x88/0x90
    [   17.155266]  gem_rx+0x114/0x2f0
    [   17.158396]  macb_poll+0x58/0x100
    [   17.161705]  net_rx_action+0x118/0x400
    [   17.165445]  __do_softirq+0x138/0x36c
    [   17.169100]  irq_exit+0x98/0xc0
    [   17.172234]  __handle_domain_irq+0x64/0xc0
    [   17.176320]  gic_handle_irq+0x5c/0xc0
    [   17.179974]  el1_irq+0xb8/0x140
    [   17.183109]  xiic_process+0x5c/0xe30
    [   17.186677]  irq_thread_fn+0x28/0x90
    [   17.190244]  irq_thread+0x208/0x2a0
    [   17.193724]  kthread+0x130/0x140
    [   17.196945]  ret_from_fork+0x10/0x20
    [   17.200510] ---[ end trace 7240980785f81d6f ]---

    [  237.021490] ------------[ cut here ]------------
    [  237.026129] DMA-API: exceeded 7 overlapping mappings of cacheline 0x0000000021d79e7b
    [  237.033886] WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:499 add_dma_entry+0x214/0x240
    [  237.041802] Modules linked in: xxxxx
    [  237.061637] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W         5.4.0 #28
    [  237.068941] Hardware name: xxxxx
    [  237.073116] pstate: 80000085 (Nzcv daIf -PAN -UAO)
    [  237.077900] pc : add_dma_entry+0x214/0x240
    [  237.081986] lr : add_dma_entry+0x214/0x240
    [  237.086072] sp : ffffffc010003c30
    [  237.089379] x29: ffffffc010003c30 x28: ffffff8878a0be00
    [  237.094683] x27: 0000000000000180 x26: ffffff8878e387c0
    [  237.099987] x25: 0000000000000002 x24: 0000000000000000
    [  237.105290] x23: 000000000000003b x22: ffffffc010a0fa00
    [  237.110594] x21: 0000000021d79e7b x20: ffffffc010abe600
    [  237.115897] x19: 00000000ffffffef x18: 0000000000000010
    [  237.121201] x17: 0000000000000000 x16: 0000000000000000
    [  237.126504] x15: ffffffc010a0fdc8 x14: 0720072007200720
    [  237.131807] x13: 0720072007200720 x12: 0720072007200720
    [  237.137111] x11: 0720072007200720 x10: 0720072007200720
    [  237.142415] x9 : 0720072007200720 x8 : 0000000000000259
    [  237.147718] x7 : 0000000000000001 x6 : 0000000000000000
    [  237.15302
    ---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-2026-013369
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?88e167b0");
  # https://lore.kernel.org/linux-cve-announce/2025123056-CVE-2023-54257-9a92@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3fd401b7");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2023-54257");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2023-54257");

  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:"2021/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/21");

  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) 2026 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 && 'sw_64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2407.1.0', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2407.1.0', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2407.1.0', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2407.1.0', '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_HOLE,
      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');
}