#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
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script_cve_id("CVE-2022-50381");
script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2022-50381");
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patched.");
script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.
- md: fix a crash in mempool_free There's a crash in mempool_free when running the lvm test shell/lvchange-
rebuild-raid.sh. The reason for the crash is this: * super_written calls
atomic_dec_and_test(&mddev->pending_writes) and wake_up(&mddev->sb_wait). Then it calls
rdev_dec_pending(rdev, mddev) and bio_put(bio). * so, the process that waited on sb_wait and that is woken
up is racing with bio_put(bio). * if the process wins the race, it calls bioset_exit before bio_put(bio)
is executed. * bio_put(bio) attempts to free a bio into a destroyed bio set - causing a crash in
mempool_free. We fix this bug by moving bio_put before atomic_dec_and_test. We also move rdev_dec_pending
before atomic_dec_and_test as suggested by Neil Brown. The function md_end_flush has a similar bug - we
must call bio_put before we decrement the number of in-progress bios. BUG: kernel NULL pointer
dereference, address: 0000000000000000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002)
- not-present page PGD 11557f0067 P4D 11557f0067 PUD 0 Oops: 0002 [#1] PREEMPT SMP CPU: 0 PID: 73 Comm:
kworker/0:1 Not tainted 6.1.0-rc3 #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2
04/01/2014 Workqueue: kdelayd flush_expired_bios [dm_delay] RIP: 0010:mempool_free+0x47/0x80 Code: 48 89
ef 5b 5d ff e0 f3 c3 48 89 f7 e8 32 45 3f 00 48 63 53 08 48 89 c6 3b 53 04 7d 2d 48 8b 43 10 8d 4a 01 48
89 df 89 4b 08 <48> 89 2c d0 e8 b0 45 3f 00 48 8d 7b 30 5b 5d 31 c9 ba 01 00 00 00 RSP:
0018:ffff88910036bda8 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffff8891037b65d8 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000202 RDI: ffff8891037b65d8 RBP: ffff8891447ba240 R08:
0000000000012908 R09: 00000000003d0900 R10: 0000000000000000 R11: 0000000000173544 R12: ffff889101a14000
R13: ffff8891562ac300 R14: ffff889102b41440 R15: ffffe8ffffa00d05 FS: 0000000000000000(0000)
GS:ffff88942fa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2:
0000000000000000 CR3: 0000001102e99000 CR4: 00000000000006b0 Call Trace: <TASK> clone_endio+0xf4/0x1c0
[dm_mod] clone_endio+0xf4/0x1c0 [dm_mod] __submit_bio+0x76/0x120 submit_bio_noacct_nocheck+0xb6/0x2a0
flush_expired_bios+0x28/0x2f [dm_delay] process_one_work+0x1b4/0x300 worker_thread+0x45/0x3e0 ?
rescuer_thread+0x380/0x380 kthread+0xc2/0x100 ? kthread_complete_and_exit+0x20/0x20
ret_from_fork+0x1f/0x30 </TASK> Modules linked in: brd dm_delay dm_raid dm_mod af_packet uvesafb
cfbfillrect cfbimgblt cn cfbcopyarea fb font fbdev tun autofs4 binfmt_misc configfs ipv6 virtio_rng
virtio_balloon rng_core virtio_net pcspkr net_failover failover qemu_fw_cfg button mousedev raid10 raid456
libcrc32c async_raid6_recov async_memcpy async_pq raid6_pq async_xor xor async_tx raid1 raid0 md_mod
sd_mod t10_pi crc64_rocksoft crc64 virtio_scsi scsi_mod evdev psmouse bsg scsi_common [last unloaded: brd]
CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- (CVE-2022-50381)
Note that Nessus relies on the presence of the package as reported by the vendor.");
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script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-perf");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
script_require_ports("Host/OS/CentOS Linux-7", "Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9", "Host/OS/Ubuntu Linux-14.04", "Host/OS/Ubuntu Linux-16.04", "Host/OS/Ubuntu Linux-18.04", "Host/OS/Ubuntu Linux-20.04", "Host/OS/Ubuntu Linux-22.04", "Host/OS/Ubuntu Linux-24.04");
exit(0);
}
if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);
include('linux_unpatched.inc');
var distro_constraints_array = {
"Ubuntu Linux-14.04": {
"package_manager": "dpkg-l",
"constraints": [
{
"release": "14.04",
"pkgs": [
{"reference": "linux-aws"},
{"reference": "linux-cloud-tools-3.13.0"},
{"reference": "linux-cloud-tools-common"},
{"reference": "linux-doc"},
{"reference": "linux-headers-3.13.0"},
{"reference": "linux-image-3.13.0"},
{"reference": "linux-image-extra-3.13.0"},
{"reference": "linux-libc-dev"},
{"reference": "linux-lts-xenial"},
{"reference": "linux-source-3.13.0"},
{"reference": "linux-tools-3.13.0"},
{"reference": "linux-tools-common"},
{"reference": "linux-udebs-generic"},
{"reference": "linux-udebs-generic-lpae"},
{"reference": "linux-udebs-lowlatency"}
]
}
]
},
"Ubuntu Linux-16.04": {
"package_manager": "dpkg-l",
"constraints": [
{
"release": "16.04",
"pkgs": [
{"reference": "linux-aws"},
{"reference": "linux-cloud-tools-4.4.0"},
{"reference": "linux-cloud-tools-common"},
{"reference": "linux-doc"},
{"reference": "linux-headers-4.4.0"},
{"reference": "linux-hwe-edge"},
{"reference": "linux-image-4.4.0"},
{"reference": "linux-image-extra-4.4.0"},
{"reference": "linux-kvm"},
{"reference": "linux-libc-dev"},
{"reference": "linux-source-4.4.0"},
{"reference": "linux-tools-4.4.0"},
{"reference": "linux-tools-common"},
{"reference": "linux-udebs-generic"},
{"reference": "linux-udebs-generic-lpae"},
{"reference": "linux-udebs-lowlatency"}
]
}
]
},
"Ubuntu Linux-18.04": {
"package_manager": "dpkg-l",
"constraints": [
{
"release": "18.04",
"pkgs": [
{"reference": "linux-aws-5.0"},
{"reference": "linux-aws-5.3"},
{"reference": "linux-azure-5.3"},
{"reference": "linux-azure-cloud-tools-4.15.0"},
{"reference": "linux-azure-edge"},
{"reference": "linux-azure-headers-4.15.0"},
{"reference": "linux-azure-tools-4.15.0"},
{"reference": "linux-cloud-tools-4.15.0"},
{"reference": "linux-gcp-5.3"},
{"reference": "linux-gcp-headers-4.15.0"},
{"reference": "linux-gcp-tools-4.15.0"},
{"reference": "linux-gke-4.15"},
{"reference": "linux-gke-5.4"},
{"reference": "linux-gkeop-5.4"},
{"reference": "linux-headers-4.15.0"},
{"reference": "linux-hwe"},
{"reference": "linux-hwe-edge"},
{"reference": "linux-image-4.15.0"},
{"reference": "linux-image-unsigned-4.15.0"},
{"reference": "linux-modules-4.15.0"},
{"reference": "linux-modules-extra-4.15.0"},
{"reference": "linux-oem-headers-4.15.0"},
{"reference": "linux-oem-tools-4.15.0"},
{"reference": "linux-oracle-5.0"},
{"reference": "linux-oracle-5.3"},
{"reference": "linux-tools-4.15.0"},
{"reference": "linux-udebs-azure"},
{"reference": "linux-udebs-oem"}
]
}
]
},
"Ubuntu Linux-20.04": {
"package_manager": "dpkg-l",
"constraints": [
{
"release": "20.04",
"pkgs": [
{"reference": "linux-aws-5.11"},
{"reference": "linux-aws-5.13"},
{"reference": "linux-aws-5.8"},
{"reference": "linux-azure-5.11"},
{"reference": "linux-azure-5.13"},
{"reference": "linux-azure-5.8"},
{"reference": "linux-azure-fde"},
{"reference": "linux-azure-fde-5.15"},
{"reference": "linux-buildinfo-5.4.0"},
{"reference": "linux-buildinfo-5.6.0"},
{"reference": "linux-cloud-tools-5.4.0"},
{"reference": "linux-cloud-tools-5.6.0"},
{"reference": "linux-gcp-5.11"},
{"reference": "linux-gcp-5.13"},
{"reference": "linux-gcp-5.8"},
{"reference": "linux-gke"},
{"reference": "linux-gke-5.15"},
{"reference": "linux-gkeop"},
{"reference": "linux-gkeop-5.15"},
{"reference": "linux-headers-5.4.0"},
{"reference": "linux-headers-5.6.0"},
{"reference": "linux-hwe-5.11"},
{"reference": "linux-hwe-5.13"},
{"reference": "linux-hwe-5.8"},
{"reference": "linux-image-5.4.0"},
{"reference": "linux-image-unsigned-5.6.0"},
{"reference": "linux-intel-5.13"},
{"reference": "linux-libc-dev"},
{"reference": "linux-modules-5.4.0"},
{"reference": "linux-modules-5.6.0"},
{"reference": "linux-modules-extra-5.4.0"},
{"reference": "linux-modules-extra-5.6.0"},
{"reference": "linux-oem-5.10"},
{"reference": "linux-oem-5.13"},
{"reference": "linux-oem-5.14"},
{"reference": "linux-oem-5.6-headers-5.6.0"},
{"reference": "linux-oem-5.6-tools-5.6.0"},
{"reference": "linux-oem-5.6-tools-common"},
{"reference": "linux-oem-5.6-tools-host"},
{"reference": "linux-oracle-5.11"},
{"reference": "linux-oracle-5.13"},
{"reference": "linux-oracle-5.8"},
{"reference": "linux-raspi2"},
{"reference": "linux-riscv-5.11"},
{"reference": "linux-riscv-5.8"},
{"reference": "linux-riscv-headers-5.4.0"},
{"reference": "linux-riscv-tools-5.4.0"},
{"reference": "linux-tools-5.4.0"},
{"reference": "linux-tools-5.6.0"},
{"reference": "linux-udebs-generic"},
{"reference": "linux-udebs-oem"}
]
}
]
},
"Ubuntu Linux-22.04": {
"package_manager": "dpkg-l",
"constraints": [
{
"release": "22.04",
"pkgs": [
{"reference": "linux-allwinner-5.19"},
{"reference": "linux-aws-5.19"},
{"reference": "linux-aws-6.2"},
{"reference": "linux-aws-6.5"},
{"reference": "linux-azure-5.19"},
{"reference": "linux-azure-6.2"},
{"reference": "linux-azure-6.5"},
{"reference": "linux-azure-fde"},
{"reference": "linux-azure-fde-5.19"},
{"reference": "linux-azure-fde-6.2"},
{"reference": "linux-buildinfo-5.15.0"},
{"reference": "linux-buildinfo-5.17.0"},
{"reference": "linux-cloud-tools-5.15.0"},
{"reference": "linux-cloud-tools-5.17.0"},
{"reference": "linux-gcp-5.19"},
{"reference": "linux-gcp-6.2"},
{"reference": "linux-gcp-6.5"},
{"reference": "linux-headers-5.15.0"},
{"reference": "linux-headers-5.17.0"},
{"reference": "linux-hwe-5.19"},
{"reference": "linux-hwe-6.2"},
{"reference": "linux-hwe-6.5"},
{"reference": "linux-image-5.15.0"},
{"reference": "linux-image-unsigned-5.17.0"},
{"reference": "linux-intel-iot-realtime"},
{"reference": "linux-lowlatency-hwe-5.19"},
{"reference": "linux-lowlatency-hwe-6.2"},
{"reference": "linux-lowlatency-hwe-6.5"},
{"reference": "linux-modules-5.15.0"},
{"reference": "linux-modules-5.17.0"},
{"reference": "linux-modules-extra-5.15.0"},
{"reference": "linux-modules-extra-5.17.0"},
{"reference": "linux-nvidia-6.2"},
{"reference": "linux-nvidia-6.5"},
{"reference": "linux-oem-5.17-headers-5.17.0"},
{"reference": "linux-oem-5.17-tools-5.17.0"},
{"reference": "linux-oem-5.17-tools-host"},
{"reference": "linux-oem-6.0"},
{"reference": "linux-oem-6.1"},
{"reference": "linux-oem-6.5"},
{"reference": "linux-oracle-6.5"},
{"reference": "linux-realtime"},
{"reference": "linux-riscv-5.19"},
{"reference": "linux-riscv-6.5"},
{"reference": "linux-riscv-headers-5.15.0"},
{"reference": "linux-riscv-tools-5.15.0"},
{"reference": "linux-starfive-5.19"},
{"reference": "linux-starfive-6.2"},
{"reference": "linux-starfive-6.5"},
{"reference": "linux-tools-5.15.0"},
{"reference": "linux-tools-5.17.0"}
]
}
]
},
"Ubuntu Linux-24.04": {
"package_manager": "dpkg-l",
"constraints": [
{
"release": "24.04",
"pkgs": [
{"reference": "linux-azure-6.11"},
{"reference": "linux-buildinfo-6.8.0"},
{"reference": "linux-cloud-tools-6.8.0"},
{"reference": "linux-gcp-6.11"},
{"reference": "linux-headers-6.8.0"},
{"reference": "linux-hwe-6.11"},
{"reference": "linux-image-6.8.0"},
{"reference": "linux-image-unsigned-6.8.0"},
{"reference": "linux-intel"},
{"reference": "linux-lowlatency-hwe-6.11"},
{"reference": "linux-modules-6.8.0"},
{"reference": "linux-modules-extra-6.8.0"},
{"reference": "linux-modules-ipu6-6.8.0"},
{"reference": "linux-modules-iwlwifi-6.8.0"},
{"reference": "linux-oem-6.11"},
{"reference": "linux-oem-6.8-headers-6.8.0"},
{"reference": "linux-oem-6.8-lib-rust-6.8.0"},
{"reference": "linux-oem-6.8-tools-6.8.0"},
{"reference": "linux-raspi-realtime"},
{"reference": "linux-realtime"},
{"reference": "linux-riscv-headers-6.8.0"},
{"reference": "linux-riscv-tools-6.8.0"},
{"reference": "linux-tools-6.8.0"}
]
}
]
},
"CentOS Linux-7": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "7",
"pkgs": [
{"reference": "bpftool"},
{"reference": "kernel"},
{"reference": "kernel-abi-whitelists"},
{"reference": "kernel-bootwrapper"},
{"reference": "kernel-debug"},
{"reference": "kernel-debug-devel"},
{"reference": "kernel-devel"},
{"reference": "kernel-doc"},
{"reference": "kernel-headers"},
{"reference": "kernel-kdump"},
{"reference": "kernel-kdump-devel"},
{"reference": "kernel-rt"},
{"reference": "kernel-rt-debug"},
{"reference": "kernel-rt-debug-devel"},
{"reference": "kernel-rt-debug-kvm"},
{"reference": "kernel-rt-devel"},
{"reference": "kernel-rt-doc"},
{"reference": "kernel-rt-kvm"},
{"reference": "kernel-rt-trace"},
{"reference": "kernel-rt-trace-devel"},
{"reference": "kernel-rt-trace-kvm"},
{"reference": "kernel-tools"},
{"reference": "kernel-tools-libs"},
{"reference": "kernel-tools-libs-devel"},
{"reference": "perf"},
{"reference": "python-perf"}
]
}
]
},
"Red Hat Enterprise Linux-7": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "7",
"pkgs": [
{"reference": "bpftool"},
{"reference": "kernel"},
{"reference": "kernel-abi-whitelists"},
{"reference": "kernel-bootwrapper"},
{"reference": "kernel-debug"},
{"reference": "kernel-debug-devel"},
{"reference": "kernel-devel"},
{"reference": "kernel-doc"},
{"reference": "kernel-headers"},
{"reference": "kernel-kdump"},
{"reference": "kernel-kdump-devel"},
{"reference": "kernel-rt"},
{"reference": "kernel-rt-debug"},
{"reference": "kernel-rt-debug-devel"},
{"reference": "kernel-rt-debug-kvm"},
{"reference": "kernel-rt-devel"},
{"reference": "kernel-rt-doc"},
{"reference": "kernel-rt-kvm"},
{"reference": "kernel-rt-trace"},
{"reference": "kernel-rt-trace-devel"},
{"reference": "kernel-rt-trace-kvm"},
{"reference": "kernel-tools"},
{"reference": "kernel-tools-libs"},
{"reference": "kernel-tools-libs-devel"},
{"reference": "perf"},
{"reference": "python-perf"}
]
}
]
},
"CentOS Linux-8": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "8",
"pkgs": [
{"reference": "kernel-rt"},
{"reference": "kernel-rt-core"},
{"reference": "kernel-rt-debug"},
{"reference": "kernel-rt-debug-core"},
{"reference": "kernel-rt-debug-devel"},
{"reference": "kernel-rt-debug-kvm"},
{"reference": "kernel-rt-debug-modules"},
{"reference": "kernel-rt-debug-modules-extra"},
{"reference": "kernel-rt-debug-modules-internal"},
{"reference": "kernel-rt-devel"},
{"reference": "kernel-rt-kvm"},
{"reference": "kernel-rt-modules"},
{"reference": "kernel-rt-modules-extra"},
{"reference": "kernel-rt-modules-internal"},
{"reference": "kernel-rt-selftests-internal"}
]
}
]
},
"Red Hat Enterprise Linux-8": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "8",
"pkgs": [
{"reference": "kernel-rt"},
{"reference": "kernel-rt-core"},
{"reference": "kernel-rt-debug"},
{"reference": "kernel-rt-debug-core"},
{"reference": "kernel-rt-debug-devel"},
{"reference": "kernel-rt-debug-kvm"},
{"reference": "kernel-rt-debug-modules"},
{"reference": "kernel-rt-debug-modules-extra"},
{"reference": "kernel-rt-debug-modules-internal"},
{"reference": "kernel-rt-devel"},
{"reference": "kernel-rt-kvm"},
{"reference": "kernel-rt-modules"},
{"reference": "kernel-rt-modules-extra"},
{"reference": "kernel-rt-modules-internal"},
{"reference": "kernel-rt-selftests-internal"}
]
}
]
},
"Red Hat Enterprise Linux-9": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "9",
"pkgs": [
{"reference": "kernel-rt"},
{"reference": "kernel-rt-core"},
{"reference": "kernel-rt-debug"},
{"reference": "kernel-rt-debug-core"},
{"reference": "kernel-rt-debug-devel"},
{"reference": "kernel-rt-debug-devel-matched"},
{"reference": "kernel-rt-debug-kvm"},
{"reference": "kernel-rt-debug-modules"},
{"reference": "kernel-rt-debug-modules-core"},
{"reference": "kernel-rt-debug-modules-extra"},
{"reference": "kernel-rt-debug-modules-internal"},
{"reference": "kernel-rt-debug-modules-partner"},
{"reference": "kernel-rt-devel"},
{"reference": "kernel-rt-devel-matched"},
{"reference": "kernel-rt-kvm"},
{"reference": "kernel-rt-modules"},
{"reference": "kernel-rt-modules-core"},
{"reference": "kernel-rt-modules-extra"},
{"reference": "kernel-rt-modules-internal"},
{"reference": "kernel-rt-modules-partner"},
{"reference": "kernel-rt-selftests-internal"}
]
}
]
}
};
var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);
if (!empty_or_null(report))
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : report
);
exit(0);
}
else
{
audit(AUDIT_HOST_NOT, 'affected');
}
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