Oracle Linux 9 : qemu-kvm (ELSA-2026-18772)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2026-18772.
##

include('compat.inc');

if (description)
{
  script_id(322195);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/23");

  script_cve_id("CVE-2025-11234");

  script_name(english:"Oracle Linux 9 : qemu-kvm (ELSA-2026-18772)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the
ELSA-2026-18772 advisory.

    [10.1.0-17]
    - kvm-mirror-Fix-missed-dirty-bitmap-writes-during-startup.patch [RHEL-155947 RHEL-155948]
    - kvm-linux-aio-Put-all-parameters-into-qemu_laiocb.patch [RHEL-154174]
    - kvm-linux-aio-Resubmit-tails-of-short-reads-writes.patch [RHEL-154174]
    - kvm-block-io_uring-avoid-potentially-getting-stuck-after.patch [RHEL-154174]
    - kvm-io-uring-Resubmit-tails-of-short-writes.patch [RHEL-154174]
    - Resolves: RHEL-155947
      (Mirror job can miss writes during startup, corrupting the copy [rhel-9.8])
    - Resolves: RHEL-155948
      (Mirror job can miss writes during startup, corrupting the copy [rhel-9])
    - Resolves: RHEL-154174
      (qemu-kvm: disk writes of fewer bytes than requested is a retry condition, not necessarily an indication
    of ENOSPC [rhel-9.8])

    [10.1.0-16]
    - kvm-block-Never-drop-BLOCK_IO_ERROR-with-action-stop-for.patch [RHEL-151679]
    - Resolves: RHEL-151679
      ([rhel-9.8] Regression in BLOCK_IO_ERROR event delivery with (w|r)error setting of 'stop' or 'enospc'
    due to event rate limiting)

    [10.1.0-15]
    - kvm-scsi-generalize-scsi_SG_IO_FROM_DEV-to-scsi_SG_IO.patch [RHEL-149396]
    - kvm-scsi-add-error-reporting-to-scsi_SG_IO.patch [RHEL-149396]
    - kvm-scsi-track-SCSI-reservation-state-for-live-migration.patch [RHEL-149396]
    - kvm-scsi-save-load-SCSI-reservation-state.patch [RHEL-149396]
    - kvm-docs-add-SCSI-migrate-pr-documentation.patch [RHEL-149396]
    - Resolves: RHEL-149396
      (Migrate SCSI PR state and preempt reservation upon live migration [rhel-9])

    [10.1.0-14]
    - kvm-rbd-Run-co-BH-CB-in-the-coroutine-s-AioContext.patch [RHEL-67115]
    - kvm-curl-Fix-coroutine-waking.patch [RHEL-67115]
    - kvm-block-io-Take-reqs_lock-for-tracked_requests.patch [RHEL-67115]
    - kvm-qcow2-Re-initialize-lock-in-invalidate_cache.patch [RHEL-67115]
    - kvm-qcow2-Fix-cache_clean_timer.patch [RHEL-67115]
    - Resolves: RHEL-67115
      ([network-storage][rbd][core-dump]installation of guest failed sometimes with multiqueue
    enabled[rhel9.6])

    [10.1.0-13]
    - kvm-vhost-user-make-vhost_set_vring_file-synchronous.patch [RHEL-147422]
    - kvm-hw-s390x-Fix-a-possible-crash-with-passed-through-vi.patch [RHEL-130620]
    - Resolves: RHEL-147422
      (virtiofs: processes become stuck in request_wait_answer on virtiofs mounts)
    - Resolves: RHEL-130620
      (VM crashes during boot when virtio device is attached through vfio_ccw [rhel-9])

    [10.1.0-12]
    - kvm-block-Improve-comments-in-BlockLimits.patch [RHEL-132989]
    - kvm-block-Expose-block-limits-for-images-in-QMP.patch [RHEL-132989]
    - kvm-qemu-img-info-Optionally-show-block-limits.patch [RHEL-132989]
    - kvm-qemu-img-info-Add-cache-mode-option.patch [RHEL-132989]
    - kvm-hw-intc-ioapic-Fix-ACCEL_KERNEL_GSI_IRQFD_POSSIBLE-t.patch [RHEL-140187]
    - kvm-q35-increase-default-tseg-size.patch [RHEL-139057]
    - Resolves: RHEL-132989
      (Expose block limits of block nodes in QMP and qemu-img [rhel-9])
    - Resolves: RHEL-140187
      (Intel IOMMU VM freezes: 'call_irq_handler: 3.37 No irq handler for vector'[rhel-9.8])
    - Resolves: RHEL-139057
      ([qemu, rhel-9] increase default TSEG size)

    [10.1.0-11]
    - kvm-block-Fix-BDS-use-after-free-during-shutdown.patch [RHEL-138240]
    - Resolves: RHEL-138240
      (QEMU crashes when stopping source VM during live migration [rhel-9])

    [10.1.0-10]
    - kvm-monitor-generalize-query-mshv-info-mshv-to-query-acc.patch [RHEL-132193]
    - Resolves: RHEL-132193
      ([rhel 9.8]L1VH qemu downstream initial merge RHEL9)

    [10.1.0-9]
    - kvm-pcie_sriov-make-pcie_sriov_pf_exit-safe-on-non-SR-IO.patch [RHEL-131144]
    - kvm-accel-Add-Meson-and-config-support-for-MSHV-accelera.patch [RHEL-132193]
    - kvm-target-i386-emulate-Allow-instruction-decoding-from-.patch [RHEL-132193]
    - kvm-target-i386-mshv-Add-x86-decoder-emu-implementation.patch [RHEL-132193]
    - kvm-hw-intc-Generalize-APIC-helper-names-from-kvm_-to-ac.patch [RHEL-132193]
    - kvm-include-hw-hyperv-Add-MSHV-ABI-header-definitions.patch [RHEL-132193]
    - kvm-linux-headers-linux-Add-mshv.h-headers.patch [RHEL-132193]
    - kvm-accel-mshv-Add-accelerator-skeleton.patch [RHEL-132193]
    - kvm-accel-mshv-Register-memory-region-listeners.patch [RHEL-132193]
    - kvm-accel-mshv-Initialize-VM-partition.patch [RHEL-132193]
    - kvm-accel-mshv-Add-vCPU-creation-and-execution-loop.patch [RHEL-132193]
    - kvm-treewide-rename-qemu_wait_io_event-qemu_wait_io_even.patch [RHEL-132193]
    - kvm-accel-mshv-Add-vCPU-signal-handling.patch [RHEL-132193]
    - kvm-target-i386-mshv-Add-CPU-create-and-remove-logic.patch [RHEL-132193]
    - kvm-target-i386-mshv-Implement-mshv_store_regs.patch [RHEL-132193]
    - kvm-target-i386-mshv-Implement-mshv_get_standard_regs.patch [RHEL-132193]
    - kvm-target-i386-mshv-Implement-mshv_get_special_regs.patch [RHEL-132193]
    - kvm-target-i386-mshv-Implement-mshv_arch_put_registers.patch [RHEL-132193]
    - kvm-target-i386-mshv-Set-local-interrupt-controller-stat.patch [RHEL-132193]
    - kvm-target-i386-mshv-Register-CPUID-entries-with-MSHV.patch [RHEL-132193]
    - kvm-target-i386-mshv-Register-MSRs-with-MSHV.patch [RHEL-132193]
    - kvm-target-i386-mshv-Integrate-x86-instruction-decoder-e.patch [RHEL-132193]
    - kvm-target-i386-mshv-Write-MSRs-to-the-hypervisor.patch [RHEL-132193]
    - kvm-target-i386-mshv-Implement-mshv_vcpu_run.patch [RHEL-132193]
    - kvm-accel-mshv-Handle-overlapping-mem-mappings.patch [RHEL-132193]
    - kvm-qapi-accel-Allow-to-query-mshv-capabilities.patch [RHEL-132193]
    - kvm-target-i386-mshv-Use-preallocated-page-for-hvcall.patch [RHEL-132193]
    - kvm-docs-Add-mshv-to-documentation.patch [RHEL-132193]
    - kvm-MAINTAINERS-Add-maintainers-for-mshv-accelerator.patch [RHEL-132193]
    - kvm-accel-mshv-initialize-thread-name.patch [RHEL-132193]
    - kvm-accel-mshv-use-return-value-of-handle_pio_str_read.patch [RHEL-132193]
    - Resolves: RHEL-131144
      (qemu crash after hot-unplug disk from the multifunction enabled bus [RHEL.9.8])
    - Resolves: RHEL-132193
      ([rhel 9.8]L1VH qemu downstream initial merge RHEL9)

    [10.1.0-8]
    - kvm-file-posix-Handle-suspended-dm-multipath-better-for-.patch [RHEL-133303]
    - Resolves: RHEL-133303
      (The VM hit io error when do S3-PR integration on the pass-through  failover multipath device [rhel-9])

Tenable has extracted the preceding description block directly from the Oracle 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.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2026-18772.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/AC:L/PR:N/UI:N/S:U/C:N/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-2025-11234");

  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:"2025/10/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-audio-pa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-block-blkio");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-block-curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-block-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-gpu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-gpu-pci");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-vga");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-usb-host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-usb-redirect");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-ui-egl-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-ui-opengl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-pr-helper");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle 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_info.nasl");
  script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  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) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_product)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
if (! preg(pattern:"^9([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Oracle Linux 9.x', 'Oracle Linux ' + os_version);

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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var constraints = [
  {
    'release': '9',
    'pkgs': [
      {'reference':'qemu-guest-agent-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-img-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-audio-pa-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-block-blkio-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-block-curl-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-block-rbd-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-common-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-core-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-display-virtio-gpu-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-display-virtio-gpu-pci-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-usb-host-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-usb-redirect-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-docs-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-tools-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-pr-helper-10.1.0-17.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-guest-agent-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-img-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-audio-pa-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-block-blkio-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-block-curl-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-block-rbd-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-common-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-core-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-display-virtio-gpu-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-display-virtio-gpu-pci-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-display-virtio-vga-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-usb-host-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-device-usb-redirect-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-docs-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-tools-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-ui-egl-headless-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-kvm-ui-opengl-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
      {'reference':'qemu-pr-helper-10.1.0-17.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'}
    ]
  }
];

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_HOLE,
      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, 'qemu-guest-agent / qemu-img / qemu-kvm / etc');
}