Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005193)

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

include('compat.inc');

if (description)
{
  script_id(296965);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/27");

  script_cve_id("CVE-2024-56615");

  script_name(english:"Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005193)");

  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-2026-005193 advisory.

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

    bpf: fix OOB devmap writes when deleting elements

    Jordy reported issue against XSKMAP which also applies to DEVMAP - the
    index used for accessing map entry, due to being a signed integer,
    causes the OOB writes. Fix is simple as changing the type from int to
    u32, however, when compared to XSKMAP case, one more thing needs to be
    addressed.

    When map is released from system via dev_map_free(), we iterate through
    all of the entries and an iterator variable is also an int, which
    implies OOB accesses. Again, change it to be u32.

    Example splat below:

    [  160.724676] BUG: unable to handle page fault for address: ffffc8fc2c001000
    [  160.731662] #PF: supervisor read access in kernel mode
    [  160.736876] #PF: error_code(0x0000) - not-present page
    [  160.742095] PGD 0 P4D 0
    [  160.744678] Oops: Oops: 0000 [#1] PREEMPT SMP
    [  160.749106] CPU: 1 UID: 0 PID: 520 Comm: kworker/u145:12 Not tainted 6.12.0-rc1+ #487
    [  160.757050] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS
    SE5C620.86B.02.01.0008.031920191559 03/19/2019
    [  160.767642] Workqueue: events_unbound bpf_map_free_deferred
    [  160.773308] RIP: 0010:dev_map_free+0x77/0x170
    [  160.777735] Code: 00 e8 fd 91 ed ff e8 b8 73 ed ff 41 83 7d 18 19 74 6e 41 8b 45 24 49 8b bd f8 00 00
    00 31 db 85 c0 74 48 48 63 c3 48 8d 04 c7 <48> 8b 28 48 85 ed 74 30 48 8b 7d 18 48 85 ff 74 05 e8 b3 52 fa
    ff
    [  160.796777] RSP: 0018:ffffc9000ee1fe38 EFLAGS: 00010202
    [  160.802086] RAX: ffffc8fc2c001000 RBX: 0000000080000000 RCX: 0000000000000024
    [  160.809331] RDX: 0000000000000000 RSI: 0000000000000024 RDI: ffffc9002c001000
    [  160.816576] RBP: 0000000000000000 R08: 0000000000000023 R09: 0000000000000001
    [  160.823823] R10: 0000000000000001 R11: 00000000000ee6b2 R12: dead000000000122
    [  160.831066] R13: ffff88810c928e00 R14: ffff8881002df405 R15: 0000000000000000
    [  160.838310] FS:  0000000000000000(0000) GS:ffff8897e0c40000(0000) knlGS:0000000000000000
    [  160.846528] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [  160.852357] CR2: ffffc8fc2c001000 CR3: 0000000005c32006 CR4: 00000000007726f0
    [  160.859604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    [  160.866847] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
    [  160.874092] PKRU: 55555554
    [  160.876847] Call Trace:
    [  160.879338]  <TASK>
    [  160.881477]  ? __die+0x20/0x60
    [  160.884586]  ? page_fault_oops+0x15a/0x450
    [  160.888746]  ? search_extable+0x22/0x30
    [  160.892647]  ? search_bpf_extables+0x5f/0x80
    [  160.896988]  ? exc_page_fault+0xa9/0x140
    [  160.900973]  ? asm_exc_page_fault+0x22/0x30
    [  160.905232]  ? dev_map_free+0x77/0x170
    [  160.909043]  ? dev_map_free+0x58/0x170
    [  160.912857]  bpf_map_free_deferred+0x51/0x90
    [  160.917196]  process_one_work+0x142/0x370
    [  160.921272]  worker_thread+0x29e/0x3b0
    [  160.925082]  ? rescuer_thread+0x4b0/0x4b0
    [  160.929157]  kthread+0xd4/0x110
    [  160.932355]  ? kthread_park+0x80/0x80
    [  160.936079]  ret_from_fork+0x2d/0x50
    [  160.943396]  ? kthread_park+0x80/0x80
    [  160.950803]  ret_from_fork_asm+0x11/0x20
    [  160.958482]  </TASK>

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-2026-005193
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5c44acec");
  # https://lore.kernel.org/linux-cve-announce/2024122708-CVE-2024-56615-5148@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8cc12307");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-56615");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/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: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-2024-56615");

  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:"2024/12/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/27");

  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:"^20.1050e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1050e', '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': '1050e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2211.5.0.0178.47', 'sp':'1050e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2211.5.0.0178.47', 'sp':'1050e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2211.5.0.0178.47', 'sp':'1050e', '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');
}