RHEL 8 : kernel-rt (RHSA-2026:63013)

high Nessus Plugin ID 342569

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-2026:63013 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: s390/cpum_sf: Handle CPU hotplug remove during sampling (CVE-2024-57849)

* kernel: smc91x: fix broken irq-context in PREEMPT_RT (CVE-2025-71132)

* kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970)

* kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185)

* kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800)

* kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397)

* kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399)

* kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026-53392)

* kernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr (CVE-2026-53391)

* kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access (CVE-2026-64018)

* kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)

* kernel: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC (CVE-2026-64298)

* kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability (CVE-2026-68480)

* kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer (CVE-2026-74581)

Bug Fix(es) and Enhancement(s):

* qede: build_skb failure causes off-by-one BD ring corruption and kernel panic [rhel-8.10.z] (JIRA:RHEL-193045)

* powerpc/pseries: lparcfg - fix kbuf[] underflow (JIRA:RHEL-240144)

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: 342569

File Name: redhat-RHSA-2026-63013.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/3/2026

Updated: 9/3/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.37

Vendor

Vendor Severity: Important

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-2024-57849

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: 9/3/2026

Vulnerability Publication Date: 1/8/2025

Reference Information

CVE: CVE-2024-57849, CVE-2025-71132, CVE-2026-45970, CVE-2026-53185, CVE-2026-53391, CVE-2026-53392, CVE-2026-53397, CVE-2026-53399, CVE-2026-63800, CVE-2026-64018, CVE-2026-64268, CVE-2026-64298, CVE-2026-68480, CVE-2026-74581

CWE: 201, 358, 364, 416, 476, 772, 787, 821, 825

RHSA: 2026:63013

Detections

Analytics