AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2024:1728936982)

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

include('compat.inc');

if (description)
{
  script_id(353076);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/30");

  script_cve_id(
    "CVE-2021-47383",
    "CVE-2021-47515",
    "CVE-2023-4133",
    "CVE-2023-4194",
    "CVE-2023-52651",
    "CVE-2023-52735",
    "CVE-2023-52880",
    "CVE-2023-52884",
    "CVE-2024-26629",
    "CVE-2024-26665",
    "CVE-2024-26737",
    "CVE-2024-26853",
    "CVE-2024-26855",
    "CVE-2024-26931",
    "CVE-2024-26946",
    "CVE-2024-27016",
    "CVE-2024-27030",
    "CVE-2024-27046",
    "CVE-2024-27052",
    "CVE-2024-27415",
    "CVE-2024-35789",
    "CVE-2024-35791",
    "CVE-2024-35845",
    "CVE-2024-35852",
    "CVE-2024-35895",
    "CVE-2024-35898",
    "CVE-2024-36025",
    "CVE-2024-36899",
    "CVE-2024-36941",
    "CVE-2024-36979",
    "CVE-2024-38559",
    "CVE-2024-38562",
    "CVE-2024-38579",
    "CVE-2024-38588",
    "CVE-2024-38601",
    "CVE-2024-38619",
    "CVE-2024-38627",
    "CVE-2024-39476",
    "CVE-2024-40905",
    "CVE-2024-40911",
    "CVE-2024-40912",
    "CVE-2024-40914",
    "CVE-2024-40927",
    "CVE-2024-40929",
    "CVE-2024-40941",
    "CVE-2024-40978",
    "CVE-2024-40983",
    "CVE-2024-40995",
    "CVE-2024-41013",
    "CVE-2024-41023",
    "CVE-2024-41039",
    "CVE-2024-41041",
    "CVE-2024-41044",
    "CVE-2024-41071",
    "CVE-2024-41076",
    "CVE-2024-41096",
    "CVE-2024-42082",
    "CVE-2024-42096",
    "CVE-2024-42110",
    "CVE-2024-42131",
    "CVE-2024-42136",
    "CVE-2024-42148",
    "CVE-2024-42152",
    "CVE-2024-42243",
    "CVE-2024-43882",
    "CVE-2024-46700",
    "CVE-2024-46722",
    "CVE-2024-46723",
    "CVE-2024-46724",
    "CVE-2024-46725",
    "CVE-2024-46731",
    "CVE-2024-46738",
    "CVE-2024-46743",
    "CVE-2024-46744",
    "CVE-2024-46746",
    "CVE-2024-46747",
    "CVE-2024-46756",
    "CVE-2024-46757",
    "CVE-2024-46758",
    "CVE-2024-46759",
    "CVE-2024-46800",
    "CVE-2024-46811",
    "CVE-2024-46813",
    "CVE-2024-46818",
    "CVE-2024-46821",
    "CVE-2024-46859"
  );
  script_xref(name:"CLSA", value:"2024:1728936982");

  script_name(english:"AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2024:1728936982)");

  script_set_attribute(attribute:"synopsis", value:
"The AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare
ALMALINUX9.2:CLSA-2024:1728936982 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: tty: Fix out-of-bound vmalloc access
    in imageblit This issue happens when a userspace program does an ioctl FBIOPUT_VSCREENINFO passing the
    fb_var_screeninfo struct containing only the fields xres, yres, and bits_per_pixel with values. If this
    struct is the same as the previous ioctl, the vc_resize() detects it and doesn't call the resize_screen(),
    leaving the fb_var_screeninfo incomplete. And this leads to the updatescrollmode() calculates a wrong
    value to fbcon_display->vrows, which makes the real_y() return a wrong value of y, and that value,
    eventually, causes the imageblit to access an out-of-bound address value. To solve this issue I made the
    resize_screen() be called even if the screen does not need any resizing, so it will fix and fill the
    fb_var_screeninfo independently. (CVE-2021-47383)

  - In the Linux kernel, the following vulnerability has been resolved: seg6: fix the iif in the IPv6 socket
    control block When an IPv4 packet is received, the ip_rcv_core(...) sets the receiving interface index
    into the IPv4 socket control block (v5.16-rc4, net/ipv4/ip_input.c line 510): IPCB(skb)->iif =
    skb->skb_iif; If that IPv4 packet is meant to be encapsulated in an outer IPv6+SRH header, the
    seg6_do_srh_encap(...) performs the required encapsulation. In this case, the seg6_do_srh_encap function
    clears the IPv6 socket control block (v5.16-rc4 net/ipv6/seg6_iptunnel.c line 163): memset(IP6CB(skb), 0,
    sizeof(*IP6CB(skb))); The memset(...) was introduced in commit ef489749aae5 (ipv6: sr: clear IP6CB(skb)
    on SRH ip4ip6 encapsulation) a long time ago (2019-01-29). Since the IPv6 socket control block and the
    IPv4 socket control block share the same memory area (skb->cb), the receiving interface index info is lost
    (IP6CB(skb)->iif is set to zero). As a side effect, that condition triggers a NULL pointer dereference if
    commit 0857d6f8c759 (ipv6: When forwarding count rx stats on the orig netdev) is applied. To fix that
    issue, we set the IP6CB(skb)->iif with the index of the receiving interface once again. (CVE-2021-47515)

  - A use-after-free vulnerability was found in the cxgb4 driver in the Linux kernel. The bug occurs when the
    cxgb4 device is detaching due to a possible rearming of the flower_stats_timer from the work queue. This
    flaw allows a local user to crash the system, causing a denial of service condition. (CVE-2023-4133)

  - A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to
    bypass network filters and gain unauthorized access to some resources. The original patches fixing
    CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits -
    a096ccca6e50 (tun: tun_chr_open(): correctly initialize socket uid), - 66b2c338adce (tap: tap_open():
    correctly initialize socket uid), pass inode->i_uid to sock_init_data_uid() as the last parameter and
    that turns out to not be accurate. (CVE-2023-4194)

  - In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Don't let
    sock_map_{close,destroy,unhash} call itself sock_map proto callbacks should never call themselves by
    design. Protect against bugs like [1] and break out of the recursive loop to avoid a stack overflow in
    favor of a resource leak. [1] https://lore.kernel.org/all/[email protected]/
    (CVE-2023-52735)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2024/clsa-2024_1728936982.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?73bc96f8");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2024:1728936982");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2024:1728936982.");
  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-2024-46859");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/10/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/30");

  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:"Alma 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/OS/extended-third-party", "Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

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) || 'AlmaLinux' >!< os_product) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
if (! preg(pattern:"^9.2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.2', 'AlmaLinux ' + os_version);

if (!get_kb_item('Host/AlmaLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);


var constraints = [
  {
    'release': '9',
    'sp': '2',
    'pkgs': [
      {'reference':'bpftool-7.0.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-abi-stablelists-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-core-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-cross-headers-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-core-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-matched-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-core-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-extra-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-internal-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-partner-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-uki-virt-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-matched-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-ipaclones-internal-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-core-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-extra-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-internal-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-partner-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-selftests-internal-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-uki-virt-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rtla-5.14.0-284.30.1.el9_2.tuxcare.els8', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', '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, 'bpftool / kernel / kernel-abi-stablelists / kernel-core / etc');
}