Oracle Linux 9 : kernel (ELSA-2026-57252)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2026-57252.
##

include('compat.inc');

if (description)
{
  script_id(338722);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/21");

  script_cve_id(
    "CVE-2026-43206",
    "CVE-2026-43233",
    "CVE-2026-43237",
    "CVE-2026-45878",
    "CVE-2026-45991",
    "CVE-2026-46120",
    "CVE-2026-52991",
    "CVE-2026-53136",
    "CVE-2026-53143",
    "CVE-2026-53189",
    "CVE-2026-53329",
    "CVE-2026-53356",
    "CVE-2026-53374",
    "CVE-2026-63879",
    "CVE-2026-63884",
    "CVE-2026-63888",
    "CVE-2026-63952",
    "CVE-2026-64007",
    "CVE-2026-64048",
    "CVE-2026-64219",
    "CVE-2026-64379",
    "CVE-2026-64382",
    "CVE-2026-64386",
    "CVE-2026-64560",
    "CVE-2026-68343",
    "CVE-2026-68388"
  );

  script_name(english:"Oracle Linux 9 : kernel (ELSA-2026-57252)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2026-57252 advisory.

    - smb: client: validate DFS referral PathConsumed (CKI Backport Bot) [RHEL-237668] {CVE-2026-68343}
    - posix-cpu-timers: Prevent UAF caused by non-leader exec() race (Waiman Long) [RHEL-227844]
    {CVE-2026-64560}
    - posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path (Waiman Long) [RHEL-227844]
    {CVE-2026-64370}
    - smb/client: handle overlapping allocated ranges in fallocate (CKI Backport Bot) [RHEL-236207]
    {CVE-2026-68388}
    - smb: client: mask server-provided mode to 07777 in modefromsid (CKI Backport Bot) [RHEL-234528]
    {CVE-2026-64379}
    - sched/psi: fix race between file release and pressure write (Waiman Long) [RHEL-232554] {CVE-2026-52991}
    - smb: client: fix query_info() replay double-free (CKI Backport Bot) [RHEL-234121] {CVE-2026-64386}
    - smb: client: fix double-free in SMB2_open() replay (CKI Backport Bot) [RHEL-234107] {CVE-2026-64382}
    - mm/huge_memory: update file PMD counter before folio_put() (Luiz Capitulino) [RHEL-231225]
    {CVE-2026-53189}
    - net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot (CKI Backport Bot) [RHEL-230090]
    {CVE-2026-64048}
    - ip6_gre: Use cached t->net in ip6erspan_changelink(). (CKI Backport Bot) [RHEL-180144] {CVE-2026-46120}
    - scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (Maurizio Lombardi)
    [RHEL-213222] {CVE-2026-63888}
    - drm/amdgpu: fix amdgpu_hmm_range_get_pages (Jose Exposito) [RHEL-222614] {CVE-2026-63879}
    - drm/amd/display: Use krealloc_array() in dal_vector_reserve() (CKI Backport Bot) [RHEL-222668]
    {CVE-2026-53329}
    - drm/amd/display: Clamp VBIOS HDMI retimer register count to array size (CKI Backport Bot) [RHEL-222683]
    {CVE-2026-53136}
    - drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11 (CKI Backport Bot)
    [RHEL-222703] {CVE-2026-53143}
    - drm/amdkfd: Fix watch_id bounds checking in debug address watch v2 (CKI Backport Bot) [RHEL-222718]
    {CVE-2026-45878}
    - drm/i915: Fix potential UAF in TTM object purge (CKI Backport Bot) [RHEL-222742] {CVE-2026-63884}
    - drm/i915/gem: Fix phys BO pread/pwrite with offset (CKI Backport Bot) [RHEL-222748] {CVE-2026-53356}
    - drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async (CKI
    Backport Bot) [RHEL-222571] {CVE-2026-64219}
    - drm/amdgpu: zero-initialize GART table on allocation (CKI Backport Bot) [RHEL-222647] {CVE-2026-53374}
    - drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() (CKI Backport Bot) [RHEL-221333]
    {CVE-2026-43206}
    - drm/amdgpu: Refactor amdgpu_gem_va_ioctl for Handling Last Fence Update and Timeline Management v7 (CKI
    Backport Bot) [RHEL-221368] {CVE-2026-43237}
    - drm/amdgpu: Refactor amdgpu_gem_va_ioctl for Handling Last Fence Update and Timeline Management v4 (CKI
    Backport Bot) [RHEL-221368] {CVE-2026-43237}
    - netfilter: nf_conntrack_h323: fix OOB read in decode_choice() (CKI Backport Bot) [RHEL-230625]
    {CVE-2026-43233}
    - netfilter: synproxy: refresh tcphdr after skb_ensure_writable (CKI Backport Bot) [RHEL-228909]
    {CVE-2026-64007}
    - memfd: deny writeable mappings when implying SEAL_WRITE (Luiz Capitulino) [RHEL-228523] {CVE-2026-63952}

Tenable has extracted the preceding description block directly from the Oracle 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://linux.oracle.com/errata/ELSA-2026-57252.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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-2026-53143");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/21");

  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:"cpe:/o:oracle:linux:9:8:baseos_patch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-abi-stablelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-cross-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-devel-matched");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-modules-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-uki-virt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-devel-matched");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-modules-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uki-virt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uki-virt-addons");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libperf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python3-perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rtla");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rv");
  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("linux_alt_patch_detect.nasl", "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');
include('ksplice.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 machine_uptrack_level = get_one_kb_item('Host/livepatch-kernel-version');
var livepatch_source = get_one_kb_item('Host/livepatch-kernel-source');
if (empty_or_null(livepatch_source)) livepatch_source = 'KSplice';

if (machine_uptrack_level)
{
  var trimmed_uptrack_level = ereg_replace(string:machine_uptrack_level, pattern:"\.(x86_64|i[3-6]86|aarch64)$", replace:'');
  var fixed_uptrack_levels = ['5.14.0-687.41.1.el9_8'];
  foreach var fixed_uptrack_level ( fixed_uptrack_levels ) {
    if (rpm_spec_vers_cmp(a:trimmed_uptrack_level, b:fixed_uptrack_level) >= 0)
    {
      audit(AUDIT_PATCH_INSTALLED, livepatch_source + ' hotfix for ELSA-2026-57252');
    }
  }
  __rpm_report = 'Running ' + livepatch_source + ' level of ' + trimmed_uptrack_level + ' does not meet the minimum fixed level of ' + join(fixed_uptrack_levels, sep:' / ') + ' for this advisory.\n\n';
}

var kernel_major_minor = get_kb_item('Host/uname/major_minor');
if (empty_or_null(kernel_major_minor)) exit(1, 'Unable to determine kernel major-minor level.');
var expected_kernel_major_minor = '5.14';
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, 'running kernel level ' + expected_kernel_major_minor + ', it is running kernel level ' + kernel_major_minor);

var constraints = [
  {
    'release': '9',
    'pkgs': [
      {'reference':'kernel-cross-headers-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libperf-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rtla-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rv-5.14.0-687.41.1.el9_8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-abi-stablelists-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-core-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-cross-headers-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-core-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-matched-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-core-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-extra-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-uki-virt-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-matched-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-core-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-extra-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-uki-virt-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-uki-virt-addons-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libperf-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rtla-5.14.0-687.41.1.el9_8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rv-5.14.0-687.41.1.el9_8', '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, 'kernel / kernel-abi-stablelists / kernel-core / etc');
}