RHEL 8 : kernel (RHSA-2024:6206)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:6206. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(206630);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/05");

  script_cve_id(
    "CVE-2021-47069",
    "CVE-2021-47385",
    "CVE-2022-48743",
    "CVE-2022-48754",
    "CVE-2022-48757",
    "CVE-2023-52486",
    "CVE-2023-52619",
    "CVE-2023-52881",
    "CVE-2023-52883",
    "CVE-2024-21823",
    "CVE-2024-26720",
    "CVE-2024-26810",
    "CVE-2024-26852",
    "CVE-2024-26853",
    "CVE-2024-26974",
    "CVE-2024-26993",
    "CVE-2024-33621",
    "CVE-2024-35789",
    "CVE-2024-35845",
    "CVE-2024-36017",
    "CVE-2024-36489",
    "CVE-2024-36883",
    "CVE-2024-36904",
    "CVE-2024-36941",
    "CVE-2024-36979",
    "CVE-2024-37356",
    "CVE-2024-38540",
    "CVE-2024-38570",
    "CVE-2024-38586",
    "CVE-2024-38596",
    "CVE-2024-39502",
    "CVE-2024-41076",
    "CVE-2024-41090",
    "CVE-2024-41091"
  );
  script_xref(name:"RHSA", value:"2024:6206");

  script_name(english:"RHEL 8 : kernel (RHSA-2024:6206)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for kernel.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2024:6206 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel:TCP-spoofed ghost ACKs and leak leak initial sequence number (CVE-2023-52881,RHV-2024-1001)

    * kernel: ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry (CVE-2021-47069)

    * kernel: drm: Don't unref the same fb many times by mistake due to deadlock handling (CVE-2023-52486)

    * kernel: pstore/ram: Fix crash when setting number of cpus to an odd number (CVE-2023-52619)

    * kernel: mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again (CVE-2024-26720)

    * kernel: vfio/pci: Lock external INTx masking ops (CVE-2024-26810)

    * kernel: igc: avoid returning frame twice in XDP_REDIRECT (CVE-2024-26853)

    * kernel: net/ipv6: avoid possible UAF in ip6_route_mpath_notify() (CVE-2024-26852)

    * kernel: fs: sysfs: Fix reference leak in sysfs_break_active_protection() (CVE-2024-26993)

    * kernel: crypto: qat - resolve race condition during AER recovery (CVE-2024-26974)

    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by
    untrusted application (CVE-2024-21823)

    * kernel: wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes (CVE-2024-35789)

    * kernel: wifi: iwlwifi: dbg-tlv: ensure NUL termination (CVE-2024-35845)

    * kernel: hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field
    (CVE-2021-47385)

    * kernel: net: fix out-of-bounds access in ops_init (CVE-2024-36883)

    * kernel: rtnetlink: Correct nested IFLA_VF_VLAN_LIST attribute validation (CVE-2024-36017)

    * kernel: wifi: nl80211: don't free NULL coalescing rule (CVE-2024-36941)

    * kernel: tcp: Use refcount_inc_not_zero() in tcp_twsk_unique(). (CVE-2024-36904)

    * kernel: net: bridge: mst: fix vlan use-after-free (CVE-2024-36979)

    * kernel: drm/amdgpu: Fix possible null pointer dereference (CVE-2023-52883)

    * kernel: phylib: fix potential use-after-free (CVE-2022-48754)

    * kernel: net: amd-xgbe: Fix skb data length underflow (CVE-2022-48743)

    * kernel: af_unix: Fix data races in unix_release_sock/unix_stream_sendmsg (CVE-2024-38596)

    * kernel: net: fix information leakage in /proc/net/ptype (CVE-2022-48757)

    * kernel: r8169: Fix possible ring buffer corruption on fragmented Tx packets. (CVE-2024-38586)

    * kernel: gfs2: Fix potential glock use-after-free on unmount (CVE-2024-38570)

    * kernel: bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq (CVE-2024-38540)

    * kernel: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound (CVE-2024-33621)

    * kernel: tcp: Fix shift-out-of-bounds in dctcp_update_alpha(). (CVE-2024-37356)

    * kernel: tls: fix missing memory barrier in tls_init (CVE-2024-36489)

    * kernel: ionic: fix use after netif_napi_del() (CVE-2024-39502)

    * kernel: virtio-net: tap: mlx5_core short frame denial of service (CVE-2024-41090)

    * kernel: virtio-net: tun: mlx5_core short frame denial of service (CVE-2024-41091)

    * kernel: NFSv4: Fix memory leak in nfs4_set_security_label (CVE-2024-41076)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
    other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2258875");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2267513");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2269070");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2270084");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2273141");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2273654");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2275748");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2275761");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2278314");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2278354");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2278989");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2281057");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2281272");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2282355");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2284271");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2284417");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2284474");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2284541");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293276");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293300");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293304");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293316");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293371");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293383");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293402");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293423");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293459");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293657");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293658");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2293687");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2297474");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2299240");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2299336");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2300453");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_6206.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8b1941e7");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:6206");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL kernel package based on the guidance in RHSA-2024:6206.");
  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-2024-38570");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20, 99, 124, 125, 276, 362, 369, 401, 402, 416, 457, 476, 787, 833);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/01/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/09/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/05");

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  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm.inc');
include('rhel.inc');
include('ksplice.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'eq', os_version: os_ver, rhel_version: '8.8')) audit(AUDIT_OS_NOT, 'Red Hat 8.8', 'Red Hat ' + os_ver);

if (!get_kb_item('Host/RedHat/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 && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  var cve_list = make_list('CVE-2021-47069', 'CVE-2021-47385', 'CVE-2022-48743', 'CVE-2022-48754', 'CVE-2022-48757', 'CVE-2023-52486', 'CVE-2023-52619', 'CVE-2023-52881', 'CVE-2023-52883', 'CVE-2024-21823', 'CVE-2024-26720', 'CVE-2024-26810', 'CVE-2024-26852', 'CVE-2024-26853', 'CVE-2024-26974', 'CVE-2024-26993', 'CVE-2024-33621', 'CVE-2024-35789', 'CVE-2024-35845', 'CVE-2024-36017', 'CVE-2024-36489', 'CVE-2024-36883', 'CVE-2024-36904', 'CVE-2024-36941', 'CVE-2024-36979', 'CVE-2024-37356', 'CVE-2024-38540', 'CVE-2024-38570', 'CVE-2024-38586', 'CVE-2024-38596', 'CVE-2024-39502', 'CVE-2024-41076', 'CVE-2024-41090', 'CVE-2024-41091');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2024:6206');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

var constraints = [
  {
    'repo_relative_urls': [
      'content/e4s/rhel8/8.8/ppc64le/baseos/debug',
      'content/e4s/rhel8/8.8/ppc64le/baseos/os',
      'content/e4s/rhel8/8.8/ppc64le/baseos/source/SRPMS',
      'content/e4s/rhel8/8.8/x86_64/baseos/debug',
      'content/e4s/rhel8/8.8/x86_64/baseos/os',
      'content/e4s/rhel8/8.8/x86_64/baseos/source/SRPMS',
      'content/eus/rhel8/8.8/aarch64/baseos/debug',
      'content/eus/rhel8/8.8/aarch64/baseos/os',
      'content/eus/rhel8/8.8/aarch64/baseos/source/SRPMS',
      'content/eus/rhel8/8.8/aarch64/codeready-builder/debug',
      'content/eus/rhel8/8.8/aarch64/codeready-builder/os',
      'content/eus/rhel8/8.8/aarch64/codeready-builder/source/SRPMS',
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      'content/eus/rhel8/8.8/ppc64le/baseos/os',
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      'content/eus/rhel8/8.8/ppc64le/codeready-builder/debug',
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      'content/eus/rhel8/8.8/ppc64le/codeready-builder/source/SRPMS',
      'content/eus/rhel8/8.8/s390x/baseos/debug',
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    'pkgs': [
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      {'reference':'kernel-tools-libs-4.18.0-477.70.1.el8_8', 'sp':'8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-4.18.0-477.70.1.el8_8', 'sp':'8', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
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      {'reference':'kernel-zfcpdump-modules-extra-4.18.0-477.70.1.el8_8', 'sp':'8', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-4.18.0-477.70.1.el8_8', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-4.18.0-477.70.1.el8_8', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_array['pkgs'] ) {
    var reference = NULL;
    var _release = NULL;
    var sp = NULL;
    var _cpu = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var epoch = NULL;
    var allowmaj = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    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 &&
        _release &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
        rpm_check(release:_release, 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)
{
  var subscription_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in the Red Hat Enterprise Linux\n' +
    'Extended Update Support repository.\n' +
    'Access to this repository requires a paid RHEL subscription.\n';
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
  else extra = subscription_caveat + rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : extra
  );
  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-core / kernel-cross-headers / etc');
}