Oracle Linux 8 : kernel (ELSA-2026-27811)

high Nessus Plugin ID 322497

Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-27811 advisory.

- selinux: RHEL-only hotfix for execmem regression (Ondrej Mosnacek) [RHEL-179435] {CVE-2026-46054}
- selinux: fix overlayfs mmap() and mprotect() access checks (Ondrej Mosnacek) [RHEL-179435] {CVE-2026-46054}
- lsm: add backing_file LSM hooks (Ondrej Mosnacek) [RHEL-179435] {CVE-2026-46054}
- fs: prepare for adding LSM blob to backing_file (Ondrej Mosnacek) [RHEL-179435] {CVE-2026-46054}
- fs: constify file ptr in backing_file accessor helpers (Ondrej Mosnacek) [RHEL-179435] {CVE-2026-46054}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 322497

File Name: oraclelinux_ELSA-2026-27811.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Oracle Linux Local Security Checks

Published: 6/24/2026

Updated: 6/24/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-46054

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:kernel, p-cpe:/a:oracle:linux:kernel-debug, p-cpe:/a:oracle:linux:kernel-debug-devel, p-cpe:/a:oracle:linux:kernel-devel, p-cpe:/a:oracle:linux:kernel-headers, p-cpe:/a:oracle:linux:kernel-tools, p-cpe:/a:oracle:linux:kernel-tools-libs, p-cpe:/a:oracle:linux:kernel-tools-libs-devel, p-cpe:/a:oracle:linux:perf, p-cpe:/a:oracle:linux:bpftool, p-cpe:/a:oracle:linux:kernel-core, p-cpe:/a:oracle:linux:kernel-cross-headers, p-cpe:/a:oracle:linux:kernel-debug-core, p-cpe:/a:oracle:linux:kernel-debug-modules, p-cpe:/a:oracle:linux:kernel-debug-modules-extra, p-cpe:/a:oracle:linux:kernel-modules, p-cpe:/a:oracle:linux:kernel-modules-extra, p-cpe:/a:oracle:linux:python3-perf, p-cpe:/a:oracle:linux:kernel-abi-stablelists, cpe:/o:oracle:linux:8:10:baseos_patch

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/23/2026

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-46054

Detections

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