RHEL 8 : kernel (RHSA-2026:98099)

critical Nessus Plugin ID 378743

Synopsis

The remote Red Hat host is missing one or more security updates for kernel.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:98099 advisory.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: Revert net/smc: Introduce TCP ULP support (CVE-2026-46330)

* kernel: Linux kernel: PPP over L2TP Use-After-Free vulnerability (CVE-2026-68398)

* kernel: openvswitch: fix GSO userspace truncation underflow (CVE-2026-68123)

* kernel: Bluetooth: mgmt: fix UAF in pair command cancellation (CVE-2026-74510)

* kernel: net: bridge: mcast: fix use-after-free of a master VLAN's multicast context (CVE-2026-80842)

* kernel: ALSA: seq: midi: Serialize input teardown with event_input (CVE-2026-90207)

* kernel: ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF (CVE-2026-98116)

* kernel: s390/boot: Avoid IPL parameter append past command line (CVE-2026-98403)

* kernel: kernel: Denial of Service via unvalidated task in iSCSI management responses (CVE-2026-99152)

* kernel: kernel: Denial of service via unvalidated task tag in iSCSI Reject PDU (CVE-2026-99153)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL kernel package based on the guidance in RHSA-2026:98099.

Plugin Details

Severity: Critical

ID: 378743

File Name: redhat-RHSA-2026-98099.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.3

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-99153

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_eus:8.10, p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel-core, p-cpe:/a:redhat:enterprise_linux:kernel-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-modules, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-core, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:python3-perf

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/11/2026

Vulnerability Publication Date: 6/9/2026

Reference Information

CVE: CVE-2026-46330, CVE-2026-68123, CVE-2026-68398, CVE-2026-74510, CVE-2026-80842, CVE-2026-90207, CVE-2026-98116, CVE-2026-98403, CVE-2026-99152, CVE-2026-99153

CWE: 476, 787, 825, 915

RHSA: 2026:98099

Detections

Analytics