Detections
Analytics

Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2025-20323)

high Nessus Plugin ID 235822

Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 8 / 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-20323 advisory.

 - selftest/x86/bugs: Add selftests for ITS (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - x86/its: Align RETs in BHB clear sequence to avoid thunking (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - x86/its: Add 'vmexit' option to skip mitigation on some CPUs (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - x86/its: Enable Indirect Target Selection mitigation (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - x86/its: Add support for ITS-safe return thunk (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - x86/its: Add support for ITS-safe indirect thunk (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - x86/its: Enumerate Indirect Target Selection (ITS) bug (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - Documentation: x86/bugs/its: Add ITS documentation (Pawan Gupta) [Orabug: 37863726] {CVE-2024-28956}
 - x86/alternatives: Remove faulty optimization (Josh Poimboeuf) [Orabug: 37863726] {CVE-2024-28956}

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.

See Also

https://linux.oracle.com/errata/ELSA-2025-20323.html

Plugin Details

Severity: High

ID: 235822

File Name: oraclelinux_ELSA-2025-20323.nasl

Version: 1.1

Type: local

Agent: unix

Published: 5/13/2025

Updated: 5/13/2025

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: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2024-28956

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: p-cpe:/a:oracle:linux:kernel-uek-container, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:kernel-uek64k-modules-extra, p-cpe:/a:oracle:linux:kernel-uek-modules-extra, p-cpe:/a:oracle:linux:kernel-uek-modules, p-cpe:/a:oracle:linux:kernel-uek-debug, p-cpe:/a:oracle:linux:kernel-uek, cpe:/o:oracle:linux:9, p-cpe:/a:oracle:linux:kernel-uek64k, p-cpe:/a:oracle:linux:kernel-uek64k-modules, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:bpftool, p-cpe:/a:oracle:linux:kernel-uek-debug-core, p-cpe:/a:oracle:linux:kernel-uek-debug-modules, cpe:/o:oracle:linux:9:5:baseos_patch, cpe:/a:oracle:linux:9::uekr7, p-cpe:/a:oracle:linux:kernel-uek-container-debug, cpe:/a:oracle:linux:8::uekr7, p-cpe:/a:oracle:linux:kernel-uek-debug-modules-extra, p-cpe:/a:oracle:linux:kernel-uek64k-core, cpe:/o:oracle:linux:9::baseos_latest, p-cpe:/a:oracle:linux:kernel-uek-core

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: 5/12/2025

Vulnerability Publication Date: 5/12/2025

Reference Information

CVE: CVE-2024-28956