Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1489)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2023 Security Advisory ALAS2023-2026-1489.
##

include('compat.inc');

if (description)
{
  script_id(304278);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/01");

  script_cve_id("CVE-2026-23100", "CVE-2026-23221", "CVE-2026-23390");

  script_name(english:"Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1489)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2023 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1489 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    mm/hugetlb: fix hugetlb_pmd_shared() (CVE-2026-23100)

    In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix use-after-free in
    driver_override_show() The driver_override_show() function reads the driver_override string without
    holding the device_lock. However, driver_override_store() uses driver_set_override(), which modifies and
    frees the string while holding the device_lock. This can result in a concurrent use-after-free if the
    string is freed by the store function while being read by the show function. Fix this by holding the
    device_lock around the read operation. (CVE-2026-23221)

    In the Linux kernel, the following vulnerability has been resolved:

    tracing/dma: Cap dma_map_sg tracepoint arrays to prevent buffer overflow (CVE-2026-23390)

Tenable has extracted the preceding description block directly from the tested product 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://alas.aws.amazon.com//AL2023/ALAS2023-2026-1489.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
  script_set_attribute(attribute:"see_also", value:"https://explore.alas.aws.amazon.com/CVE-2026-23100.html");
  script_set_attribute(attribute:"see_also", value:"https://explore.alas.aws.amazon.com/CVE-2026-23221.html");
  script_set_attribute(attribute:"see_also", value:"https://explore.alas.aws.amazon.com/CVE-2026-23390.html");
  script_set_attribute(attribute:"solution", value:
"Run 'dnf update kernel6.12 --releasever 2023.10.20260325' or
  or 'dnf update --advisory ALAS2023-2026-1489 --releasever 2023.10.20260325' to update your system.");
  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-2026-23221");

  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:"2026/02/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bpftool6.12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:bpftool6.12-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-livepatch-6.12.74-98.124");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-debuginfo-common-aarch64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-debuginfo-common-x86_64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-libbpf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-libbpf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-libbpf-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-libbpf-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-modules-extra-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel6.12-tools-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perf6.12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perf6.12-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3-perf6.12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3-perf6.12-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2023");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Amazon 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/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2023")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2023", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var pkgs = [
    {'reference':'bpftool6.12-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'bpftool6.12-6.12.'},
    {'reference':'bpftool6.12-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'bpftool6.12-6.12.'},
    {'reference':'bpftool6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'bpftool6.12-debuginfo-6.12.'},
    {'reference':'bpftool6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'bpftool6.12-debuginfo-6.12.'},
    {'reference':'kernel-livepatch-6.12.74-98.124-1.0-0.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-livepatch-6.12.74-98.124-1.0-0.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel6.12-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-6.12.'},
    {'reference':'kernel6.12-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-6.12.'},
    {'reference':'kernel6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-debuginfo-6.12.'},
    {'reference':'kernel6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-debuginfo-6.12.'},
    {'reference':'kernel6.12-debuginfo-common-aarch64-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-debuginfo-common-aarch64-6.12.'},
    {'reference':'kernel6.12-debuginfo-common-x86_64-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-debuginfo-common-x86_64-6.12.'},
    {'reference':'kernel6.12-devel-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-devel-6.12.'},
    {'reference':'kernel6.12-devel-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-devel-6.12.'},
    {'reference':'kernel6.12-headers-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-headers-6.12.'},
    {'reference':'kernel6.12-headers-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-headers-6.12.'},
    {'reference':'kernel6.12-libbpf-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-6.12.'},
    {'reference':'kernel6.12-libbpf-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-6.12.'},
    {'reference':'kernel6.12-libbpf-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-debuginfo-6.12.'},
    {'reference':'kernel6.12-libbpf-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-debuginfo-6.12.'},
    {'reference':'kernel6.12-libbpf-devel-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-devel-6.12.'},
    {'reference':'kernel6.12-libbpf-devel-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-devel-6.12.'},
    {'reference':'kernel6.12-libbpf-static-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-static-6.12.'},
    {'reference':'kernel6.12-libbpf-static-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-libbpf-static-6.12.'},
    {'reference':'kernel6.12-modules-extra-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-modules-extra-6.12.'},
    {'reference':'kernel6.12-modules-extra-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-modules-extra-6.12.'},
    {'reference':'kernel6.12-modules-extra-common-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-modules-extra-common-6.12.'},
    {'reference':'kernel6.12-modules-extra-common-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-modules-extra-common-6.12.'},
    {'reference':'kernel6.12-tools-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-tools-6.12.'},
    {'reference':'kernel6.12-tools-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-tools-6.12.'},
    {'reference':'kernel6.12-tools-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-tools-debuginfo-6.12.'},
    {'reference':'kernel6.12-tools-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-tools-debuginfo-6.12.'},
    {'reference':'kernel6.12-tools-devel-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-tools-devel-6.12.'},
    {'reference':'kernel6.12-tools-devel-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel6.12-tools-devel-6.12.'},
    {'reference':'perf6.12-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'perf6.12-6.12.'},
    {'reference':'perf6.12-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'perf6.12-6.12.'},
    {'reference':'perf6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'perf6.12-debuginfo-6.12.'},
    {'reference':'perf6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'perf6.12-debuginfo-6.12.'},
    {'reference':'python3-perf6.12-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3-perf6.12-6.12.'},
    {'reference':'python3-perf6.12-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3-perf6.12-6.12.'},
    {'reference':'python3-perf6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3-perf6.12-debuginfo-6.12.'},
    {'reference':'python3-perf6.12-debuginfo-6.12.74-98.124.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3-perf6.12-debuginfo-6.12.'}
];

var flag = 0;
foreach var package_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(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
    if (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)
{
  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, "bpftool6.12 / bpftool6.12-debuginfo / kernel-livepatch-6.12.74-98.124 / etc");
}