Unity Linux 20.1070a Security Update: kernel (UTSA-2025-391262)

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

include('compat.inc');

if (description)
{
  script_id(267656);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/15");

  script_cve_id("CVE-2024-44999");

  script_name(english:"Unity Linux 20.1070a Security Update: kernel (UTSA-2025-391262)");

  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-2025-391262 advisory.

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

    gtp: pull network headers in gtp_dev_xmit()

    syzbot/KMSAN reported use of uninit-value in get_dev_xmit() [1]

    We must make sure the IPv4 or Ipv6 header is pulled in skb->head
    before accessing fields in them.

    Use pskb_inet_may_pull() to fix this issue.

    [1]
    BUG: KMSAN: uninit-value in ipv6_pdp_find drivers/net/gtp.c:220 [inline]
     BUG: KMSAN: uninit-value in gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline]
     BUG: KMSAN: uninit-value in gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281
      ipv6_pdp_find drivers/net/gtp.c:220 [inline]
      gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline]
      gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281
      __netdev_start_xmit include/linux/netdevice.h:4913 [inline]
      netdev_start_xmit include/linux/netdevice.h:4922 [inline]
      xmit_one net/core/dev.c:3580 [inline]
      dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3596
      __dev_queue_xmit+0x358c/0x5610 net/core/dev.c:4423
      dev_queue_xmit include/linux/netdevice.h:3105 [inline]
      packet_xmit+0x9c/0x6c0 net/packet/af_packet.c:276
      packet_snd net/packet/af_packet.c:3145 [inline]
      packet_sendmsg+0x90e3/0xa3a0 net/packet/af_packet.c:3177
      sock_sendmsg_nosec net/socket.c:730 [inline]
      __sock_sendmsg+0x30f/0x380 net/socket.c:745
      __sys_sendto+0x685/0x830 net/socket.c:2204
      __do_sys_sendto net/socket.c:2216 [inline]
      __se_sys_sendto net/socket.c:2212 [inline]
      __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212
      x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45
      do_syscall_x64 arch/x86/entry/common.c:52 [inline]
      do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
     entry_SYSCALL_64_after_hwframe+0x77/0x7f

    Uninit was created at:
      slab_post_alloc_hook mm/slub.c:3994 [inline]
      slab_alloc_node mm/slub.c:4037 [inline]
      kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4080
      kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:583
      __alloc_skb+0x363/0x7b0 net/core/skbuff.c:674
      alloc_skb include/linux/skbuff.h:1320 [inline]
      alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6526
      sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2815
      packet_alloc_skb net/packet/af_packet.c:2994 [inline]
      packet_snd net/packet/af_packet.c:3088 [inline]
      packet_sendmsg+0x749c/0xa3a0 net/packet/af_packet.c:3177
      sock_sendmsg_nosec net/socket.c:730 [inline]
      __sock_sendmsg+0x30f/0x380 net/socket.c:745
      __sys_sendto+0x685/0x830 net/socket.c:2204
      __do_sys_sendto net/socket.c:2216 [inline]
      __se_sys_sendto net/socket.c:2212 [inline]
      __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212
      x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45
      do_syscall_x64 arch/x86/entry/common.c:52 [inline]
      do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
     entry_SYSCALL_64_after_hwframe+0x77/0x7f

    CPU: 0 UID: 0 PID: 7115 Comm: syz.1.515 Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
    Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024

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-2025-391262
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?182fe6e6");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-44999");
  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: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:H/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-2024-44999");

  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:"2024/09/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/07");

  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:"^20.1070a([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 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': '1070a',
    'pkgs': [
      {'reference':'kernel-5.10.0-74.12', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.12', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.12', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.12', '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');
}