RHEL 8 : kernel (RHSA-2026:65710)

high Nessus Plugin ID 343934

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-2026:65710 advisory.

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

Security Fix(es):

* kernel: dm btree remove: fix use after free in rebalance_children() (CVE-2021-47600)

* kernel: netfilter: nf_tables: don't skip expired elements during walk (CVE-2023-52924)

* kernel: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() (CVE-2026-31411)

* kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120)

* kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)

* kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006)

* kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp (CVE-2026-53071)

* kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196)

* kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191)

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

* kernel: can:bcm: arbitrary kernel code execution leading to escalate privileges (CVE-2026-17523)

* kernel: packet: use consistent hard_header_len in non-ring send paths ()

Bug Fix(es) and Enhancement(s):

* vhost: reset the vring metadata cache on vring reconfiguration (JIRA:RHEL-224603)

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: 343934

File Name: redhat-RHSA-2026-65710.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/9/2026

Updated: 9/9/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.61

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-53196

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

CVSS Score Source: CVE-2021-47600

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_aus:8.4, 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, p-cpe:/a:redhat:enterprise_linux:kernel-tools, 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 Ease: No known exploits are available

Patch Publication Date: 9/9/2026

Vulnerability Publication Date: 7/21/2021

Reference Information

CVE: CVE-2021-47600, CVE-2023-52924, CVE-2026-17523, CVE-2026-31411, CVE-2026-46120, CVE-2026-53006, CVE-2026-53016, CVE-2026-53071, CVE-2026-53196, CVE-2026-64191, CVE-2026-64268

CWE: 416, 664, 763, 787, 805, 822, 825

RHSA: 2026:65710

Detections

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