RHEL 8 : kernel-rt (RHSA-2026:99031)

high Nessus Plugin ID 379068

Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:99031 advisory.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: drm/amdkfd: hold event_mutex while checkpointing CRIU events (CVE-2026-74446)

* kernel: drm/amdkfd: fix SMI event cross-process information leak (CVE-2026-97422)

* kernel: drm/amd/pm: bound pp_dpm_set_pp_table() memcpy (CVE-2026-97427)

* kernel: drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id (CVE-2026-97497)

* kernel: drm/amdgpu: validate and share PSP fw_pri_buf copies via psp_copy_fw (CVE-2026-97494)

* kernel: drm/amdkfd: Check bounds on allocate_doorbell (CVE-2026-97495)

* kernel: drm/amdgpu: Bound GPIO I2C table entry count from VBIOS (CVE-2026-97493)

* kernel: drm/amdgpu: fix buffer overflow during vBIOS update (CVE-2026-97425)

* kernel: net/smc: protect clcsock lifetime in smc_getname (CVE-2026-99032)

* kernel: kernel: Denial of Service via use-after-free race condition in SCSI tape driver (CVE-2026-99156)

Bug Fix(es) and Enhancement(s):

* soft lockup occurs during iomap_finish_ioends (JIRA:RHEL-258946)

* gfs2: BUG during withdraw [RHEL-8] (JIRA:RHEL-298310)

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 affected packages.

Plugin Details

Severity: High

ID: 379068

File Name: redhat-RHSA-2026-99031.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: Medium

Score: 4.9

Percentile: 58.51

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-99156

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: CVSS:3.0/E:U/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:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2026

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2026-74446, CVE-2026-97422, CVE-2026-97425, CVE-2026-97427, CVE-2026-97493, CVE-2026-97494, CVE-2026-97495, CVE-2026-97497, CVE-2026-99032, CVE-2026-99156

CWE: 120, 1285, 201, 416, 787

RHSA: 2026:99031

Detections

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