Oracle Linux 8 : kernel (ELSA-2023-7077)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2023-7077.
##

include('compat.inc');

if (description)
{
  script_id(186109);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/16");

  script_cve_id(
    "CVE-2021-43975",
    "CVE-2022-3594",
    "CVE-2022-3640",
    "CVE-2022-4744",
    "CVE-2022-28388",
    "CVE-2022-38457",
    "CVE-2022-40133",
    "CVE-2022-40982",
    "CVE-2022-42895",
    "CVE-2022-45869",
    "CVE-2022-45887",
    "CVE-2023-0458",
    "CVE-2023-0590",
    "CVE-2023-0597",
    "CVE-2023-1073",
    "CVE-2023-1074",
    "CVE-2023-1075",
    "CVE-2023-1079",
    "CVE-2023-1118",
    "CVE-2023-1206",
    "CVE-2023-1252",
    "CVE-2023-1382",
    "CVE-2023-1855",
    "CVE-2023-1989",
    "CVE-2023-1998",
    "CVE-2023-2513",
    "CVE-2023-3141",
    "CVE-2023-3161",
    "CVE-2023-3212",
    "CVE-2023-3268",
    "CVE-2023-3609",
    "CVE-2023-3611",
    "CVE-2023-3772",
    "CVE-2023-4128",
    "CVE-2023-4132",
    "CVE-2023-4155",
    "CVE-2023-4206",
    "CVE-2023-4207",
    "CVE-2023-4208",
    "CVE-2023-4732",
    "CVE-2023-23455",
    "CVE-2023-26545",
    "CVE-2023-28328",
    "CVE-2023-28772",
    "CVE-2023-30456",
    "CVE-2023-31084",
    "CVE-2023-31436",
    "CVE-2023-33203",
    "CVE-2023-33951",
    "CVE-2023-33952",
    "CVE-2023-35823",
    "CVE-2023-35824"
  );

  script_name(english:"Oracle Linux 8 : kernel (ELSA-2023-7077)");

  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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2023-7077 advisory.

  - qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write
    because lmax can exceed QFQ_MIN_LMAX. (CVE-2023-31436)

  - A use-after-free flaw was found in btsdio_remove in drivers\bluetooth\btsdio.c in the Linux Kernel. In
    this flaw, a call to btsdio_remove with an unfinished job, may cause a race problem leading to a UAF on
    hdev devices. (CVE-2023-1989)

  - A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to
    achieve local privilege escalation. When u32_change() is called on an existing filter, the whole
    tcf_result struct is always copied into the new instance of the filter. This causes a problem when
    updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the
    success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading
    to a use-after-free. We recommend upgrading past commit 3044b16e7c6fe5d24b1cdbcf1bd0a9d92d1ebd81.
    (CVE-2023-4208)

  - An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a
    blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is
    called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event,
    down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and
    down(&fepriv->sem) may block the process. (CVE-2023-31084)

  - A flaw was found in pfn_swap_entry_to_page in memory management subsystem in the Linux Kernel. In this
    flaw, an attacker with a local user privilege may cause a denial of service problem due to a BUG statement
    referencing pmd_t x. (CVE-2023-4732)

  - A flaw was found in KVM AMD Secure Encrypted Virtualization (SEV) in the Linux kernel. A KVM guest using
    SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke
    the `VMGEXIT` handler recursively. If an attacker manages to call the handler multiple times, they can
    trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel
    configurations without stack guard pages (`CONFIG_VMAP_STACK`). (CVE-2023-4155)

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this
    vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The
    manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to
    apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.
    (CVE-2022-3594)

  - A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The
    resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be
    used to leak the contents. We recommend upgrading past version 6.1.8 or commit
    739790605705ddcf18f21782b9c99ad7d53a8c11 (CVE-2023-0458)

  - A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to
    achieve local privilege escalation. When fw_change() is called on an existing filter, the whole tcf_result
    struct is always copied into the new instance of the filter. This causes a problem when updating a filter
    bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path,
    decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-
    free. We recommend upgrading past commit 76e42ae831991c828cffa8c37736ebfb831ad5ec. (CVE-2023-4207)

  - Information exposure through microarchitectural state after transient execution in certain vector
    execution units for some Intel(R) Processors may allow an authenticated user to potentially enable
    information disclosure via local access. (CVE-2022-40982)

  - A memory leak flaw was found in the Linux kernel's Stream Control Transmission Protocol. This issue may
    occur when a user starts a malicious networking service and someone connects to this service. This could
    allow a local user to starve resources, causing a denial of service. (CVE-2023-1074)

  - A flaw was found in the Linux Kernel. The tls_is_tx_ready() incorrectly checks for list emptiness,
    potentially accessing a type confused entry to the list_head, leaking the last byte of the confused field
    that overlaps with rec->tx_ready. (CVE-2023-1075)

  - A use-after-free flaw was found in xgene_hwmon_remove in drivers/hwmon/xgene-hwmon.c in the Hardware
    Monitoring Linux Kernel Driver (xgene-hwmon). This flaw could allow a local attacker to crash the system
    due to a race problem. This vulnerability could even lead to a kernel information leak problem.
    (CVE-2023-1855)

  - The Linux kernel allows userspace processes to enable mitigations by calling prctl with
    PR_SET_SPECULATION_CTRL which disables the speculation feature as well as by using seccomp. We had noticed
    that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to
    attacks in some cases even after enabling the spectre-BTI mitigation with prctl. The same behavior can be
    observed on a bare-metal machine when forcing the mitigation to IBRS on boot command line. This happened
    because when plain IBRS was enabled (not enhanced IBRS), the kernel had some logic that determined that
    STIBP was not needed. The IBRS bit implicitly protects against cross-thread branch target injection.
    However, with legacy IBRS, the IBRS bit was cleared on returning to userspace, due to performance reasons,
    which disabled the implicit STIBP and left userspace threads vulnerable to cross-thread branch target
    injection against which STIBP protects. (CVE-2023-1998)

  - A use-after-free(UAF) vulnerability was found in function 'vmw_execbuf_tie_context' in
    drivers/gpu/vmxgfx/vmxgfx_execbuf.c in Linux kernel's vmwgfx driver with device file '/dev/dri/renderD128
    (or Dxxx)'. This flaw allows a local attacker with a user account on the system to gain privilege, causing
    a denial of service(DoS). (CVE-2022-40133)

  - atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial
    of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition
    rather than valid classification results). (CVE-2023-23455)

  - In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure
    (for registering the sysctl table under a new location) during the renaming of a device. (CVE-2023-26545)

  - A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to
    cause a denial of service (host OS crash or host OS memory corruption) when nested virtualisation and the
    TDP MMU are enabled. (CVE-2022-45869)

  - A flaw was found in the Linux kernel. A use-after-free may be triggered in asus_kbd_backlight_set when
    plugging/disconnecting in a malicious USB device, which advertises itself as an Asus device. Similarly to
    the previous known CVE-2023-25012, but in asus devices, the work_struct may be scheduled by the LED
    controller while the device is disconnecting, triggering a use-after-free on the struct asus_kbd_leds *led
    structure. A malicious USB device may exploit the issue to cause memory corruption with controlled data.
    (CVE-2023-1079)

  - A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the
    extra inode size for extended attributes. This flaw could allow a privileged local user to cause a system
    crash or other undefined behaviors. (CVE-2023-2513)

  - A use-after-free flaw was found in r592_remove in drivers/memstick/host/r592.c in media access in the
    Linux Kernel. This flaw allows a local attacker to crash the system at device disconnect, possibly leading
    to a kernel information leak. (CVE-2023-3141)

  - An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in
    kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel
    internal information. (CVE-2023-3268)

  - A vulnerability, which was classified as critical, was found in Linux Kernel. Affected is the function
    l2cap_conn_del of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads
    to use after free. It is recommended to apply a patch to fix this issue. The identifier of this
    vulnerability is VDB-211944. (CVE-2022-3640)

  - An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited
    to achieve local privilege escalation. The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-
    of-bounds write because lmax is updated according to packet sizes without bounds checks. We recommend
    upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64. (CVE-2023-3611)

  - In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in
    drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c allows an attacker (who can introduce a
    crafted device) to trigger an out-of-bounds write via a crafted length value. (CVE-2021-43975)

  - A double-free flaw was found in the Linux kernel's TUN/TAP device driver functionality in how a user
    registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw
    allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-4744)

  - A use-after-free(UAF) vulnerability was found in function 'vmw_cmd_res_check' in
    drivers/gpu/vmxgfx/vmxgfx_execbuf.c in Linux kernel's vmwgfx driver with device file '/dev/dri/renderD128
    (or Dxxx)'. This flaw allows a local attacker with a user account on the system to gain privilege, causing
    a denial of service(DoS). (CVE-2022-38457)

  - There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req
    function which can be used to leak kernel pointers remotely. We recommend upgrading past commit
    https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e
    https://www.google.com/url (CVE-2022-42895)

  - A flaw possibility of memory leak in the Linux kernel cpu_entry_area mapping of X86 CPU data to memory was
    found in the way user can guess location of exception stack(s) or other important data. A local user could
    use this flaw to get access to some important data with expected location in memory. (CVE-2023-0597)

  - A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on
    corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it
    has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic.
    (CVE-2023-3212)

  - A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to
    achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return
    an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can
    control the reference counter and set it to zero, they can cause the reference to be freed, leading to a
    use-after-free vulnerability. We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.
    (CVE-2023-3609)

  - An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in
    drivers/media/pci/saa7134/saa7134-core.c. (CVE-2023-35823)

  - A flaw use after free in the Linux kernel integrated infrared receiver/transceiver driver was found in the
    way user detaching rc device. A local user could use this flaw to crash the system or potentially escalate
    their privileges on the system. (CVE-2023-1118)

  - A use-after-free flaw was found in the Linux kernel's Ext4 File System in how a user triggers several file
    operations simultaneously with the overlay FS usage. This flaw allows a local user to crash or potentially
    escalate their privileges on the system. Only if patch 9a2544037600 (ovl: fix use after free in struct
    ovl_aio_req) not applied yet, the kernel could be affected. (CVE-2023-1252)

  - usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c in the Linux kernel through 5.17.1 has a double
    free. (CVE-2022-28388)

  - An issue was discovered in the Linux kernel through 6.0.9. drivers/media/usb/ttusb-dec/ttusb_dec.c has a
    memory leak because of the lack of a dvb_frontend_detach call. (CVE-2022-45887)

  - A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race
    problem. This flaw leads to a denial of service issue. If patch ebda44da44f6 (net: sched: fix race
    condition in qdisc_graft()) not applied yet, then kernel could be affected. (CVE-2023-0590)

  - A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel's IPv6
    functionality when a user makes a new kind of SYN flood attack. A user located in the local network or
    with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up
    to 95%. (CVE-2023-1206)

  - A data race flaw was found in the Linux kernel, between where con is allocated and con->sock is set. This
    issue leads to a NULL pointer dereference when accessing con->sock->sk in net/tipc/topsrv.c in the tipc
    protocol in the Linux kernel. (CVE-2023-1382)

  - A use-after-free vulnerability was found in the siano smsusb module in the Linux kernel. The bug occurs
    during device initialization when the siano device is plugged in. This flaw allows a local user to crash
    the system, causing a denial of service condition. (CVE-2023-4132)

  - An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer
    overflow. (CVE-2023-28772)

  - An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64
    lacks consistency checks for CR0 and CR4. (CVE-2023-30456)

  - The Linux kernel before 6.2.9 has a race condition and resultant use-after-free in
    drivers/net/ethernet/qualcomm/emac/emac.c if a physically proximate attacker unplugs an emac based device.
    (CVE-2023-33203)

  - A race condition vulnerability was found in the vmwgfx driver in the Linux kernel. The flaw exists within
    the handling of GEM objects. The issue results from improper locking when performing operations on an
    object. This flaw allows a local privileged user to disclose information in the context of the kernel.
    (CVE-2023-33951)

  - An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in
    drivers/media/pci/dm1105/dm1105.c. (CVE-2023-35824)

  - A memory corruption flaw was found in the Linux kernel's human interface device (HID) subsystem in how a
    user inserts a malicious USB device. This flaw allows a local user to crash or potentially escalate their
    privileges on the system. (CVE-2023-1073)

  - A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and
    font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds
    occurs leading to undefined behavior and possible denial of service. (CVE-2023-3161)

  - A flaw was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem). This issue
    may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in
    xfrm_update_ae_params(), leading to a possible kernel crash and denial of service. (CVE-2023-3772)

  - A use-after-free vulnerability in the Linux kernel's net/sched: cls_route component can be exploited to
    achieve local privilege escalation. When route4_change() is called on an existing filter, the whole
    tcf_result struct is always copied into the new instance of the filter. This causes a problem when
    updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the
    success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading
    to a use-after-free. We recommend upgrading past commit b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8.
    (CVE-2023-4206)

  - A NULL pointer dereference flaw was found in the az6027 driver in drivers/media/usb/dev-usb/az6027.c in
    the Linux Kernel. The message from user space is not checked properly before transferring into the device.
    This flaw allows a local user to crash the system or potentially cause a denial of service.
    (CVE-2023-28328)

  - A double-free vulnerability was found in the vmwgfx driver in the Linux kernel. The flaw exists within the
    handling of vmw_buffer_object objects. The issue results from the lack of validating the existence of an
    object prior to performing further free operations on the object. This flaw allows a local privileged user
    to escalate privileges and execute code in the context of the kernel. (CVE-2023-33952)

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-2023-7077.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/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-2021-43975");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-3640");

  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:"2021/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/11/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:8::codeready_builder");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8:9:baseos_base");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8::baseos_latest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:bpftool");
  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-modules");
  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-devel");
  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-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:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python3-perf");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2023-2024 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('ksplice.inc');
include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);

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/uptrack-uname-r');
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 = ['4.18.0-513.5.1.el8_9'];
  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, 'KSplice hotfix for ELSA-2023-7077');
    }
  }
  __rpm_report = 'Running KSplice 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 = '4.18';
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 pkgs = [
    {'reference':'bpftool-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-4.18.0'},
    {'reference':'kernel-abi-stablelists-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-abi-stablelists-4.18.0'},
    {'reference':'kernel-core-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-core-4.18.0'},
    {'reference':'kernel-cross-headers-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-cross-headers-4.18.0'},
    {'reference':'kernel-debug-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-4.18.0'},
    {'reference':'kernel-debug-core-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-core-4.18.0'},
    {'reference':'kernel-debug-devel-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-devel-4.18.0'},
    {'reference':'kernel-debug-modules-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-4.18.0'},
    {'reference':'kernel-debug-modules-extra-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-extra-4.18.0'},
    {'reference':'kernel-devel-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-devel-4.18.0'},
    {'reference':'kernel-headers-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-4.18.0'},
    {'reference':'kernel-modules-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-4.18.0'},
    {'reference':'kernel-modules-extra-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-extra-4.18.0'},
    {'reference':'kernel-tools-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-4.18.0'},
    {'reference':'kernel-tools-libs-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-4.18.0'},
    {'reference':'kernel-tools-libs-devel-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-devel-4.18.0'},
    {'reference':'perf-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-4.18.0-513.5.1.el8_9', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bpftool-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-4.18.0'},
    {'reference':'kernel-abi-stablelists-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-abi-stablelists-4.18.0'},
    {'reference':'kernel-core-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-core-4.18.0'},
    {'reference':'kernel-cross-headers-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-cross-headers-4.18.0'},
    {'reference':'kernel-debug-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-4.18.0'},
    {'reference':'kernel-debug-core-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-core-4.18.0'},
    {'reference':'kernel-debug-devel-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-devel-4.18.0'},
    {'reference':'kernel-debug-modules-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-4.18.0'},
    {'reference':'kernel-debug-modules-extra-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-extra-4.18.0'},
    {'reference':'kernel-devel-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-devel-4.18.0'},
    {'reference':'kernel-headers-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-4.18.0'},
    {'reference':'kernel-modules-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-4.18.0'},
    {'reference':'kernel-modules-extra-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-extra-4.18.0'},
    {'reference':'kernel-tools-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-4.18.0'},
    {'reference':'kernel-tools-libs-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-4.18.0'},
    {'reference':'kernel-tools-libs-devel-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-devel-4.18.0'},
    {'reference':'perf-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-4.18.0-513.5.1.el8_9', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
];

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;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'EL' + 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 (reference && _release) {
    if (exists_check) {
        if (rpm_exists(release:_release, rpm:exists_check) && 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)) flag++;
    } else {
        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)) 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-abi-stablelists / etc');
}