SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2023:3180-1)

2023-08-0400:00:00

www.tenable.com

suse sles15

opensuse 15

multiple vulnerabilities

zen 2 cpus

use after free

denial of service

linux kernel

nftables

privilege escalation

out of bounds

tun/tap device driver

JSON

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:3180-1 advisory.

An issue in Zen 2 CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information. (CVE-2023-20593)
A use after free flaw was found in hfsplus_put_super in fs/hfsplus/super.c in the Linux Kernel. This flaw could allow a local user to cause a denial of service problem. (CVE-2023-2985)
REJECT DO NOT USE THIS CVE RECORD. ConsultIDs: CVE-2023-3390. Reason: This record is a duplicate of CVE-2023-3390. Notes: All CVE users should reference CVE-2023-3390 instead of this record. All references and descriptions in this record have been removed to prevent accidental usage. (CVE-2023-3117)
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; nft_chain_lookup_byid() failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace (CVE-2023-31248)
A use-after-free vulnerability was found in the Linux kernel’s netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97. (CVE-2023-3390)
Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register contents when CAP_NET_ADMIN is in any user or network namespace (CVE-2023-35001)
An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2023-3812)

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:3180-1. The text itself
# is copyright (C) SUSE.
##

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  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple
vulnerabilities as referenced in the SUSE-SU-2023:3180-1 advisory.

  - An issue in Zen 2 CPUs, under specific microarchitectural circumstances, may allow an attacker to
    potentially access sensitive information. (CVE-2023-20593)

  - A use after free flaw was found in hfsplus_put_super in fs/hfsplus/super.c in the Linux Kernel. This flaw
    could allow a local user to cause a denial of service problem. (CVE-2023-2985)

  - ** REJECT ** DO NOT USE THIS CVE RECORD. ConsultIDs: CVE-2023-3390. Reason: This record is a duplicate of
    CVE-2023-3390. Notes: All CVE users should reference CVE-2023-3390 instead of this record. All references
    and descriptions in this record have been removed to prevent accidental usage. (CVE-2023-3117)

  - Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()`
    failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace
    (CVE-2023-31248)

  - A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in
    net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a
    dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local
    attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit
    1240eb93f0616b21c675416516ff3d74798fdc97. (CVE-2023-3390)

  - Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register
    contents when CAP_NET_ADMIN is in any user or network namespace (CVE-2023-35001)

  - An out-of-bounds memory access flaw was found in the Linux kernel's TUN/TAP device driver functionality in
    how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows
    a local user to crash or potentially escalate their privileges on the system. (CVE-2023-3812)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193629");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194869");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1207894");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1208788");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1211243");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1211867");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213206");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213226");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213233");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213245");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213247");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213252");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213258");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213259");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213263");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213264");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213286");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213311");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213493");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213523");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213705");
  script_set_attribute(attribute:"see_also", value:"https://lists.suse.com/pipermail/sle-updates/2023-August/030786.html");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-20593");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-2985");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-3117");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-31248");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-3390");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-35001");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-3812");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
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  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-3812");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
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  script_set_attribute(attribute:"vuln_publication_date", value:"2023/06/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/03");
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  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES|SUSE)") audit(AUDIT_OS_NOT, "SUSE / openSUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+|SUSE([\d.]+))", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE / openSUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15|SLES_SAP15|SUSE15\.5)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES15 / SLES_SAP15 / openSUSE 15', 'SUSE / openSUSE (' + os_ver + ')');

if (!get_kb_item("Host/SuSE/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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE / openSUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP5", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'kernel-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-azure-devel-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-azure-devel-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-devel-azure-5.14.21-150500.33.11.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-source-azure-5.14.21-150500.33.11.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-syms-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-syms-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kernel-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'kernel-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'kernel-azure-devel-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'kernel-azure-devel-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'kernel-devel-azure-5.14.21-150500.33.11.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'kernel-source-azure-5.14.21-150500.33.11.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'kernel-syms-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'kernel-syms-azure-5.14.21-150500.33.11.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-public-cloud-release-15.5', 'sles-release-15.5']},
    {'reference':'cluster-md-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'cluster-md-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'dlm-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'dlm-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'gfs2-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'gfs2-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-devel-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-devel-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-extra-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-extra-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-livepatch-devel-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-livepatch-devel-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-optional-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-optional-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-azure-vdso-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-devel-azure-5.14.21-150500.33.11.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-source-azure-5.14.21-150500.33.11.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-syms-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kernel-syms-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kselftests-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kselftests-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'ocfs2-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'ocfs2-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'reiserfs-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'aarch64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'reiserfs-kmp-azure-5.14.21-150500.33.11.1', 'cpu':'x86_64', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = 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['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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, 'cluster-md-kmp-azure / dlm-kmp-azure / gfs2-kmp-azure / etc');
}

VendorProductVersionCPE
novellsuse_linuxkernel-source-azurep-cpe:/a:novell:suse_linux:kernel-source-azure
novellsuse_linuxkernel-azure-develp-cpe:/a:novell:suse_linux:kernel-azure-devel
novellsuse_linuxkernel-azurep-cpe:/a:novell:suse_linux:kernel-azure
novellsuse_linuxkernel-syms-azurep-cpe:/a:novell:suse_linux:kernel-syms-azure
novellsuse_linuxkernel-devel-azurep-cpe:/a:novell:suse_linux:kernel-devel-azure
novellsuse_linux15cpe:/o:novell:suse_linux:15

Vendor	Product	Version	CPE
novell	suse_linux	kernel-source-azure	p-cpe:/a:novell:suse_linux:kernel-source-azure
novell	suse_linux	kernel-azure-devel	p-cpe:/a:novell:suse_linux:kernel-azure-devel
novell	suse_linux	kernel-azure	p-cpe:/a:novell:suse_linux:kernel-azure
novell	suse_linux	kernel-syms-azure	p-cpe:/a:novell:suse_linux:kernel-syms-azure
novell	suse_linux	kernel-devel-azure	p-cpe:/a:novell:suse_linux:kernel-devel-azure
novell	suse_linux	15	cpe:/o:novell:suse_linux:15