CentOS Linux 7 [TuxCare] Security Update: bpftool / kernel / kernel-debug / kernel-debug-devel / kernel-devel / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1792234299)

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

include('compat.inc');

if (description)
{
  script_id(369489);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/21");

  script_cve_id(
    "CVE-2022-36946",
    "CVE-2022-48702",
    "CVE-2023-52531",
    "CVE-2025-40026",
    "CVE-2026-64471",
    "CVE-2026-64483",
    "CVE-2026-68329",
    "CVE-2026-72129",
    "CVE-2026-72323",
    "CVE-2026-72383",
    "CVE-2026-72413",
    "CVE-2026-72476",
    "CVE-2026-74287",
    "CVE-2026-74359",
    "CVE-2026-74408",
    "CVE-2026-74444",
    "CVE-2026-74479",
    "CVE-2026-74498",
    "CVE-2026-74505",
    "CVE-2026-74550",
    "CVE-2026-74556",
    "CVE-2026-74569",
    "CVE-2026-80536",
    "CVE-2026-80584",
    "CVE-2026-80622",
    "CVE-2026-80681",
    "CVE-2026-80829",
    "CVE-2026-81001",
    "CVE-2026-81003",
    "CVE-2026-89448",
    "CVE-2026-89542",
    "CVE-2026-89548",
    "CVE-2026-89549",
    "CVE-2026-89550",
    "CVE-2026-89553",
    "CVE-2026-89574",
    "CVE-2026-89575",
    "CVE-2026-89633",
    "CVE-2026-89637",
    "CVE-2026-89699",
    "CVE-2026-89778",
    "CVE-2026-89786",
    "CVE-2026-89893",
    "CVE-2026-90011",
    "CVE-2026-90033",
    "CVE-2026-90057",
    "CVE-2026-90116",
    "CVE-2026-90203",
    "CVE-2026-90329",
    "CVE-2026-90413",
    "CVE-2026-90414",
    "CVE-2026-90421",
    "CVE-2026-93117",
    "CVE-2026-93189",
    "CVE-2026-97408",
    "CVE-2026-97445",
    "CVE-2026-97455",
    "CVE-2026-97536",
    "CVE-2026-97539",
    "CVE-2026-97564",
    "CVE-2026-97608",
    "CVE-2026-97931",
    "CVE-2026-97949",
    "CVE-2026-98077",
    "CVE-2026-98185",
    "CVE-2026-98186",
    "CVE-2026-98196",
    "CVE-2026-98217",
    "CVE-2026-98222",
    "CVE-2026-98266",
    "CVE-2026-98269",
    "CVE-2026-98312",
    "CVE-2026-98342",
    "CVE-2026-98354",
    "CVE-2026-98375",
    "CVE-2026-99999"
  );
  script_xref(name:"CLSA", value:"2026:1792234299");

  script_name(english:"CentOS Linux 7 [TuxCare] Security Update: bpftool / kernel / kernel-debug / kernel-debug-devel / kernel-devel / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1792234299)");

  script_set_attribute(attribute:"synopsis", value:
"The CentOS Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the
TuxCare CENTOS7:CLSA-2026:1792234299 advisory.

  - nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote
    attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte
    nfta_payload attribute, an skb_pull can encounter a negative skb->len. (CVE-2022-36946)

  - In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: Fix a memory
    corruption issue A few lines above, space is kzalloc()'ed for: sizeof(struct iwl_nvm_data) + sizeof(struct
    ieee80211_channel) + sizeof(struct ieee80211_rate) 'mvm->nvm_data' is a 'struct iwl_nvm_data', so it is
    fine. At the end of this structure, there is the 'channels' flex array. Each element is of type 'struct
    ieee80211_channel'. So only 1 element is allocated in this array. When doing:
    mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels; We point at the first element of the
    'channels' flex array. So this is fine. However, when doing: mvm->nvm_data->bands[0].bitrates = (void
    *)((u8 *)mvm->nvm_data->channels + 1); because of the (u8 *) cast, we add only 1 to the address of the
    beginning of the flex array. It is likely that we want point at the 'struct ieee80211_rate' allocated just
    after. Remove the spurious casting so that the pointer arithmetic works as expected. (CVE-2023-52531)

  - In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1
    intercepts when completing userspace I/O When completing emulation of instruction that generated a
    userspace exit for I/O, don't recheck L1 intercepts as KVM has already finished that phase of instruction
    execution, i.e. has already committed to allowing L2 to perform I/O. If L1 (or host userspace) modifies
    the I/O permission bitmaps during the exit to userspace, KVM will treat the access as being intercepted
    despite already having emulated the I/O access. Pivot on EMULTYPE_NO_DECODE to detect that KVM is
    completing emulation. Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the intended
    recipient) can reach the code in question. gp_interception()'s use is mutually exclusive with
    is_guest_mode(), and complete_emulated_insn_gp() unconditionally pairs EMULTYPE_NO_DECODE with
    EMULTYPE_SKIP. The bad behavior was detected by a syzkaller program that toggles port I/O interception
    during the userspace I/O exit, ultimately resulting in a WARN on vcpu->arch.pio.count being non-zero due
    to KVM no completing emulation of the I/O instruction. WARNING: CPU: 23 PID: 1083 at
    arch/x86/kvm/x86.c:8039 emulator_pio_in_out+0x154/0x170 [kvm] Modules linked in: kvm_intel kvm irqbypass
    CPU: 23 UID: 1000 PID: 1083 Comm: repro Not tainted 6.16.0-rc5-c1610d2d66b1-next-vm #74 NONE Hardware
    name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:emulator_pio_in_out+0x154/0x170
    [kvm] PKRU: 55555554 Call Trace: <TASK> kvm_fast_pio+0xd6/0x1d0 [kvm] vmx_handle_exit+0x149/0x610
    [kvm_intel] kvm_arch_vcpu_ioctl_run+0xda8/0x1ac0 [kvm] kvm_vcpu_ioctl+0x244/0x8c0 [kvm]
    __x64_sys_ioctl+0x8a/0xd0 do_syscall_64+0x5d/0xc60 entry_SYSCALL_64_after_hwframe+0x4b/0x53 </TASK>
    (CVE-2025-40026)

  - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: fix use-after-free
    on registration failure Make sure to release the sibling interfaces in case controller registration fails
    to avoid use-after-free and double-free when they are eventually disconnected. This issue was reported by
    Sashiko while reviewing a fix for a wakeup source leak in the btusb probe errors paths. (CVE-2026-64471)

  - In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire: isight: bound the
    sample count to the packet payload isight_packet() takes the frame count from the device iso packet and
    checks it only against the device claimed iso length. count = be32_to_cpu(payload->sample_count); if
    (likely(count <= (length - 16) / 4)) isight_samples(isight, payload->samples, count); length is the iso
    header data_length. It can be up to 0xffff. So the gate allows a count up to about 16379. isight_samples()
    then copies count frames out of payload->samples into the PCM DMA buffer. payload->samples holds only 2 *
    MAX_FRAMES_PER_PACKET values. The device multiplexes two samples per frame. A count past
    MAX_FRAMES_PER_PACKET reads past the payload. A count past the buffer size writes past runtime->dma_area.
    The smallest PCM buffer is larger than MAX_FRAMES_PER_PACKET. Bounding the count to MAX_FRAMES_PER_PACKET
    keeps both the read and the write in range. A malicious or faulty Apple iSight on the FireWire bus reaches
    this during a normal capture. Add the MAX_FRAMES_PER_PACKET bound to the gate. (CVE-2026-64483)

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/centos7els/advisories/2026/clsa-2026_1792234299.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f134cea1");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1792234299");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory CENTOS7:CLSA-2026:1792234299.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-52531");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"vendor_severity", value:"Critical");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/21");

  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:"CentOS 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/CentOS/release", "Host/CentOS/rpm-list");

  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) || 'CentOS Linux' >!< os_product) audit(AUDIT_OS_NOT, 'CentOS Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS Linux');
if (! preg(pattern:"^7([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'CentOS Linux 7', 'CentOS Linux ' + os_version);

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

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


var constraints = [
  {
    'release': '7',
    'pkgs': [
      {'reference':'bpftool-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-3.10.0-1160.167.1.el7.tuxcare.els1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python-perf-3.10.0-1160.167.1.el7.tuxcare.els1', '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, 'bpftool / kernel / kernel-debug / kernel-debug-devel / kernel-devel / etc');
}