Rocky Linux 8 [CIQ] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (crlsa-2026_21706)

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

include('compat.inc');

if (description)
{
  script_id(354641);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/01");

  script_cve_id(
    "CVE-2025-39981",
    "CVE-2025-68183",
    "CVE-2025-68347",
    "CVE-2025-71116",
    "CVE-2026-23243",
    "CVE-2026-23270",
    "CVE-2026-23455",
    "CVE-2026-31408",
    "CVE-2026-31532",
    "CVE-2026-31684",
    "CVE-2026-31685",
    "CVE-2026-31709",
    "CVE-2026-43020",
    "CVE-2026-43027",
    "CVE-2026-43051",
    "CVE-2026-43158",
    "CVE-2026-43163",
    "CVE-2026-43190"
  );

  script_name(english:"Rocky Linux 8 [CIQ] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (crlsa-2026_21706)");

  script_set_attribute(attribute:"synopsis", value:
"The Rocky Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ
crlsa-2026_21706 advisory.

    * kernel: Bluetooth: MGMT: Fix possible UAFs (CVE-2025-39981)

    * kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183)

    * kernel: ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events (CVE-2025-68347)

    * kernel: libceph: make decode_pool() more resilient against corrupted osdmaps (CVE-2025-71116)

    * kernel: Linux kernel: Denial of service and memory corruption in RDMA umad (CVE-2026-23243)

    * kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or
    privilege escalation (CVE-2026-23270)

    * kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CVE-2026-23455)

    * kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408)

    * kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532)

    * kernel: net: sched: act_csum: validate nested VLAN headers (CVE-2026-31684)

    * kernel: netfilter: ip6t_eui64: reject invalid MAC header for all packets (CVE-2026-31685)

    * kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027)

    * kernel: Bluetooth: MGMT: validate LTK enc_size on load (CVE-2026-43020)

    * kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CVE-2026-43051)

    * kernel: smb: client: validate the whole DACL before rewriting it in cifsacl (CVE-2026-31709)

    * kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)

    * kernel: netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190)

    * kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)

Tenable has extracted the preceding description block directly from the CIQ 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://bugzilla.redhat.com/show_bug.cgi?id=2404105");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2422699");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2424879");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2429602");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2448594");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2448745");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2454810");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2455334");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2461107");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2461757");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2461759");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464369");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464455");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464462");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464476");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2467059");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2467064");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2467210");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2404105");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2422699");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2424879");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2429602");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2448594");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2448745");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2454810");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2455334");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2461107");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2461757");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2461759");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464369");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464455");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464462");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2464476");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2467059");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2467064");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2467210");
  script_set_attribute(attribute:"see_also", value:"https://errata.build.resf.org/RLSA-2026:21706");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:21706");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2026_21706.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?35d8692f");
  # https://github.com/ctrliq/advisories/blob/main/csaf/advisories/rocky/2026/crlsa-2026_21706.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?616878d2");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in CIQ advisory crlsa-2026_21706.");
  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-2026-43027");

  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:"Unknown");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/10/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  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:"Rocky 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/RockyLinux/release", "Host/RockyLinux/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 != 'CIQ') exit(0, 'CIQ 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) || 'Rocky Linux' >!< os_product) audit(AUDIT_OS_NOT, 'Rocky Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Rocky Linux');
if (! preg(pattern:"^8([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Rocky Linux 8', 'Rocky Linux ' + os_version);

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

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && cpu !~ "^i[3-6]86$" && 'ppc' >!< cpu && 's390' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Rocky Linux', cpu);


var constraints = [
  {
    'release': '8',
    'pkgs': [
      {'reference':'bpftool-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'bpftool-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-abi-stablelists-4.18.0-553.126.1.el8_10', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-core-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-core-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-core-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-core-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-devel-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-devel-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-modules-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-modules-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-modules-extra-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-debug-modules-extra-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-devel-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-devel-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-modules-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-modules-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-modules-extra-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-modules-extra-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-tools-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-tools-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-tools-libs-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-tools-libs-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-tools-libs-devel-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'kernel-tools-libs-devel-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'perf-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'perf-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'python3-perf-4.18.0-553.126.1.el8_10', 'cpu':'aarch64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'python3-perf-4.18.0-553.126.1.el8_10', 'cpu':'x86_64', 'el_string':'el8_10', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
    ]
  }
];

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');
}