#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
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script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/22");
script_cve_id("CVE-2025-38491");
script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2025-38491");
script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
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.
- mptcp: make fallback action and fallback decision atomic Syzkaller reported the following splat: WARNING:
CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 __mptcp_do_fallback net/mptcp/protocol.h:1223 [inline]
WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 mptcp_do_fallback net/mptcp/protocol.h:1244
[inline] WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 check_fully_established
net/mptcp/options.c:982 [inline] WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223
mptcp_incoming_options+0x21a8/0x2510 net/mptcp/options.c:1153 Modules linked in: CPU: 1 UID: 0 PID: 7704
Comm: syz.3.1419 Not tainted 6.16.0-rc3-gbd5ce2324dba #20 PREEMPT(voluntary) Hardware name: QEMU Ubuntu
24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__mptcp_do_fallback
net/mptcp/protocol.h:1223 [inline] RIP: 0010:mptcp_do_fallback net/mptcp/protocol.h:1244 [inline] RIP:
0010:check_fully_established net/mptcp/options.c:982 [inline] RIP:
0010:mptcp_incoming_options+0x21a8/0x2510 net/mptcp/options.c:1153 Code: 24 18 e8 bb 2a 00 fd e9 1b df ff
ff e8 b1 21 0f 00 e8 ec 5f c4 fc 44 0f b7 ac 24 b0 00 00 00 e9 54 f1 ff ff e8 d9 5f c4 fc 90 <0f> 0b 90 e9
b8 f4 ff ff e8 8b 2a 00 fd e9 8d e6 ff ff e8 81 2a 00 RSP: 0018:ffff8880a3f08448 EFLAGS: 00010246 RAX:
0000000000000000 RBX: ffff8880180a8000 RCX: ffffffff84afcf45 RDX: ffff888090223700 RSI: ffffffff84afdaa7
RDI: 0000000000000001 RBP: ffff888017955780 R08: 0000000000000001 R09: 0000000000000000 R10:
0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880180a8910 R14: ffff8880a3e9d058
R15: 0000000000000000 FS: 00005555791b8500(0000) GS:ffff88811c495000(0000) knlGS:0000000000000000 CS: 0010
DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2800b7 CR3: 0000000058e44000 CR4: 0000000000350ef0
Call Trace: <IRQ> tcp_reset+0x26f/0x2b0 net/ipv4/tcp_input.c:4432 tcp_validate_incoming+0x1057/0x1b60
net/ipv4/tcp_input.c:5975 tcp_rcv_established+0x5b5/0x21f0 net/ipv4/tcp_input.c:6166
tcp_v4_do_rcv+0x5dc/0xa70 net/ipv4/tcp_ipv4.c:1925 tcp_v4_rcv+0x3473/0x44a0 net/ipv4/tcp_ipv4.c:2363
ip_protocol_deliver_rcu+0xba/0x480 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2f1/0x500
net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:317 [inline] NF_HOOK
include/linux/netfilter.h:311 [inline] ip_local_deliver+0x1be/0x560 net/ipv4/ip_input.c:254 dst_input
include/net/dst.h:469 [inline] ip_rcv_finish net/ipv4/ip_input.c:447 [inline] NF_HOOK
include/linux/netfilter.h:317 [inline] NF_HOOK include/linux/netfilter.h:311 [inline] ip_rcv+0x514/0x810
net/ipv4/ip_input.c:567 __netif_receive_skb_one_core+0x197/0x1e0 net/core/dev.c:5975
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6088 process_backlog+0x301/0x1360 net/core/dev.c:6440
__napi_poll.constprop.0+0xba/0x550 net/core/dev.c:7453 napi_poll net/core/dev.c:7517 [inline]
net_rx_action+0xb44/0x1010 net/core/dev.c:7644 handle_softirqs+0x1d0/0x770 kernel/softirq.c:579
do_softirq+0x3f/0x90 kernel/softirq.c:480 </IRQ> <TASK> __local_bh_enable_ip+0xed/0x110
kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline]
inet_csk_listen_stop+0x2c5/0x1070 net/ipv4/inet_connection_sock.c:1524
mptcp_check_listen_stop.part.0+0x1cc/0x220 net/mptcp/protocol.c:2985 mptcp_check_listen_stop
net/mptcp/mib.h:118 [inline] __mptcp_close+0x9b9/0xbd0 net/mptcp/protocol.c:3000 mptcp_close+0x2f/0x140
net/mptcp/protocol.c:3066 inet_release+0xed/0x200 net/ipv4/af_inet.c:435 inet6_release+0x4f/0x70
net/ipv6/af_inet6.c:487 __sock_release+0xb3/0x270 net/socket.c:649 sock_close+0x1c/0x30 net/socket.c:1439
__fput+0x402/0xb70 fs/file_table.c:465 task_work_run+0x150/0x240 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xd4
---truncated--- (CVE-2025-38491)
Note that Nessus relies on the presence of the package as reported by the vendor.");
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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/Debian Linux-11", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-9", "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", "Host/OS/Ubuntu Linux-25.04", "Host/OS/Ubuntu Linux-25.10");
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/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 = {
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"package_manager": "dpkg-l",
"constraints": [
{
"release": "11",
"pkgs": [
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{"reference": "btrfs-modules-5.10.0-32-alpha-generic-di"},
{"reference": "cdrom-core-modules-5.10.0-32-alpha-generic-di"},
{"reference": "hyperv-daemons"},
{"reference": "kernel-image-5.10.0-32-alpha-generic-di"},
{"reference": "libcpupower-dev"},
{"reference": "libcpupower1"},
{"reference": "linux-bootwrapper-5.10.0"},
{"reference": "linux-config-5.10"},
{"reference": "linux-cpupower"},
{"reference": "linux-doc"},
{"reference": "linux-doc-5.10"},
{"reference": "linux-headers-5.10.0"},
{"reference": "linux-kbuild-5.10"},
{"reference": "linux-libc-dev"},
{"reference": "linux-perf"},
{"reference": "linux-perf-5.10"},
{"reference": "linux-source"},
{"reference": "linux-source-5.10"},
{"reference": "linux-support-5.10.0"},
{"reference": "loop-modules-5.10.0-32-alpha-generic-di"},
{"reference": "nic-modules-5.10.0-32-alpha-generic-di"},
{"reference": "nic-shared-modules-5.10.0-32-alpha-generic-di"},
{"reference": "nic-wireless-modules-5.10.0-32-alpha-generic-di"},
{"reference": "pata-modules-5.10.0-32-alpha-generic-di"},
{"reference": "ppp-modules-5.10.0-32-alpha-generic-di"},
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{"reference": "scsi-nic-modules-5.10.0-32-alpha-generic-di"},
{"reference": "serial-modules-5.10.0-32-alpha-generic-di"},
{"reference": "usb-serial-modules-5.10.0-32-alpha-generic-di"},
{"reference": "usbip"}
]
}
]
},
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"constraints": [
{
"release": "16.04",
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]
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{"reference": "linux-azure-edge"},
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{"reference": "linux-aws-5.8"},
{"reference": "linux-azure-5.11"},
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{"reference": "linux-azure-5.15"},
{"reference": "linux-azure-5.8"},
{"reference": "linux-azure-fde"},
{"reference": "linux-buildinfo-5.4.0"},
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{"reference": "linux-cloud-tools-5.4.0"},
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{"reference": "linux-gcp-5.13"},
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{"reference": "linux-intel-5.13"},
{"reference": "linux-intel-iotg-5.15"},
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{"reference": "linux-nvidia-tegra-5.15"},
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},
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{
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{"reference": "linux-doc"},
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{"reference": "linux-intel-iot-realtime"},
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{"reference": "linux-oem-6.5"},
{"reference": "linux-oracle-6.5"},
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{"reference": "linux-realtime"},
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{"reference": "linux-tools-common"},
{"reference": "linux-tools-host"},
{"reference": "linux-udebs-aws"},
{"reference": "linux-udebs-azure"},
{"reference": "linux-xilinx-zynqmp"}
]
}
]
},
"Ubuntu Linux-24.04": {
"package_manager": "dpkg-l",
"constraints": [
{
"release": "24.04",
"pkgs": [
{"reference": "linux-azure-6.11"},
{"reference": "linux-azure-fde"},
{"reference": "linux-azure-fde-6.14"},
{"reference": "linux-azure-fde-6.17"},
{"reference": "linux-azure-nvidia"},
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{"reference": "linux-cloud-tools-6.8.0"},
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"Ubuntu Linux-25.04": {
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{
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},
"Red Hat Enterprise Linux-10": {
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{
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{"reference": "kernel-64k-debug"},
{"reference": "kernel-64k-debug-core"},
{"reference": "kernel-64k-debug-devel"},
{"reference": "kernel-64k-debug-devel-matched"},
{"reference": "kernel-64k-debug-modules"},
{"reference": "kernel-64k-debug-modules-core"},
{"reference": "kernel-64k-debug-modules-extra"},
{"reference": "kernel-64k-devel"},
{"reference": "kernel-64k-devel-matched"},
{"reference": "kernel-64k-modules"},
{"reference": "kernel-64k-modules-core"},
{"reference": "kernel-64k-modules-extra"},
{"reference": "kernel-abi-stablelists"},
{"reference": "kernel-core"},
{"reference": "kernel-cross-headers"},
{"reference": "kernel-debug"},
{"reference": "kernel-debug-core"},
{"reference": "kernel-debug-devel"},
{"reference": "kernel-debug-devel-matched"},
{"reference": "kernel-debug-modules"},
{"reference": "kernel-debug-modules-core"},
{"reference": "kernel-debug-modules-extra"},
{"reference": "kernel-debug-uki-virt"},
{"reference": "kernel-devel"},
{"reference": "kernel-devel-matched"},
{"reference": "kernel-doc"},
{"reference": "kernel-headers"},
{"reference": "kernel-modules"},
{"reference": "kernel-modules-core"},
{"reference": "kernel-modules-extra"},
{"reference": "kernel-modules-extra-matched"},
{"reference": "kernel-rt"},
{"reference": "kernel-rt-64k"},
{"reference": "kernel-rt-64k-core"},
{"reference": "kernel-rt-64k-debug"},
{"reference": "kernel-rt-64k-debug-core"},
{"reference": "kernel-rt-64k-debug-devel"},
{"reference": "kernel-rt-64k-debug-modules"},
{"reference": "kernel-rt-64k-debug-modules-core"},
{"reference": "kernel-rt-64k-debug-modules-extra"},
{"reference": "kernel-rt-64k-devel"},
{"reference": "kernel-rt-64k-modules"},
{"reference": "kernel-rt-64k-modules-core"},
{"reference": "kernel-rt-64k-modules-extra"},
{"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-core"},
{"reference": "kernel-rt-debug-modules-extra"},
{"reference": "kernel-rt-devel"},
{"reference": "kernel-rt-kvm"},
{"reference": "kernel-rt-modules"},
{"reference": "kernel-rt-modules-core"},
{"reference": "kernel-rt-modules-extra"},
{"reference": "kernel-tools"},
{"reference": "kernel-tools-libs"},
{"reference": "kernel-tools-libs-devel"},
{"reference": "kernel-uki-virt"},
{"reference": "kernel-uki-virt-addons"},
{"reference": "kernel-zfcpdump"},
{"reference": "kernel-zfcpdump-core"},
{"reference": "kernel-zfcpdump-devel"},
{"reference": "kernel-zfcpdump-devel-matched"},
{"reference": "kernel-zfcpdump-modules"},
{"reference": "kernel-zfcpdump-modules-core"},
{"reference": "kernel-zfcpdump-modules-extra"},
{"reference": "libperf"},
{"reference": "perf"},
{"reference": "python3-perf"},
{"reference": "rtla"},
{"reference": "rv"}
]
}
]
},
"Red Hat Enterprise Linux-9": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "9",
"pkgs": [
{"reference": "bpftool"},
{"reference": "kernel"},
{"reference": "kernel-64k"},
{"reference": "kernel-64k-core"},
{"reference": "kernel-64k-debug"},
{"reference": "kernel-64k-debug-core"},
{"reference": "kernel-64k-debug-devel"},
{"reference": "kernel-64k-debug-devel-matched"},
{"reference": "kernel-64k-debug-modules"},
{"reference": "kernel-64k-debug-modules-core"},
{"reference": "kernel-64k-debug-modules-extra"},
{"reference": "kernel-64k-debug-modules-internal"},
{"reference": "kernel-64k-debug-modules-partner"},
{"reference": "kernel-64k-devel"},
{"reference": "kernel-64k-devel-matched"},
{"reference": "kernel-64k-modules"},
{"reference": "kernel-64k-modules-core"},
{"reference": "kernel-64k-modules-extra"},
{"reference": "kernel-64k-modules-internal"},
{"reference": "kernel-64k-modules-partner"},
{"reference": "kernel-abi-stablelists"},
{"reference": "kernel-core"},
{"reference": "kernel-cross-headers"},
{"reference": "kernel-debug"},
{"reference": "kernel-debug-core"},
{"reference": "kernel-debug-devel"},
{"reference": "kernel-debug-devel-matched"},
{"reference": "kernel-debug-modules"},
{"reference": "kernel-debug-modules-core"},
{"reference": "kernel-debug-modules-extra"},
{"reference": "kernel-debug-modules-internal"},
{"reference": "kernel-debug-modules-partner"},
{"reference": "kernel-debug-uki-virt"},
{"reference": "kernel-debug-uki-virt-addons"},
{"reference": "kernel-devel"},
{"reference": "kernel-devel-matched"},
{"reference": "kernel-doc"},
{"reference": "kernel-headers"},
{"reference": "kernel-ipaclones-internal"},
{"reference": "kernel-modules"},
{"reference": "kernel-modules-core"},
{"reference": "kernel-modules-extra"},
{"reference": "kernel-modules-internal"},
{"reference": "kernel-modules-partner"},
{"reference": "kernel-rt"},
{"reference": "kernel-rt-64k"},
{"reference": "kernel-rt-64k-core"},
{"reference": "kernel-rt-64k-debug"},
{"reference": "kernel-rt-64k-debug-core"},
{"reference": "kernel-rt-64k-debug-devel"},
{"reference": "kernel-rt-64k-debug-devel-matched"},
{"reference": "kernel-rt-64k-debug-kvm"},
{"reference": "kernel-rt-64k-debug-modules"},
{"reference": "kernel-rt-64k-debug-modules-core"},
{"reference": "kernel-rt-64k-debug-modules-extra"},
{"reference": "kernel-rt-64k-debug-modules-internal"},
{"reference": "kernel-rt-64k-debug-modules-partner"},
{"reference": "kernel-rt-64k-devel"},
{"reference": "kernel-rt-64k-devel-matched"},
{"reference": "kernel-rt-64k-kvm"},
{"reference": "kernel-rt-64k-modules"},
{"reference": "kernel-rt-64k-modules-core"},
{"reference": "kernel-rt-64k-modules-extra"},
{"reference": "kernel-rt-64k-modules-internal"},
{"reference": "kernel-rt-64k-modules-partner"},
{"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"},
{"reference": "kernel-selftests-internal"},
{"reference": "kernel-tools"},
{"reference": "kernel-tools-libs"},
{"reference": "kernel-tools-libs-devel"},
{"reference": "kernel-uki-virt"},
{"reference": "kernel-uki-virt-addons"},
{"reference": "kernel-zfcpdump"},
{"reference": "kernel-zfcpdump-core"},
{"reference": "kernel-zfcpdump-devel"},
{"reference": "kernel-zfcpdump-devel-matched"},
{"reference": "kernel-zfcpdump-modules"},
{"reference": "kernel-zfcpdump-modules-core"},
{"reference": "kernel-zfcpdump-modules-extra"},
{"reference": "kernel-zfcpdump-modules-internal"},
{"reference": "kernel-zfcpdump-modules-partner"},
{"reference": "libperf"},
{"reference": "libperf-devel"},
{"reference": "perf"},
{"reference": "python3-perf"},
{"reference": "rtla"},
{"reference": "rv"}
]
}
]
}
};
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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