Detections
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Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2022-9198)

medium Nessus Plugin ID 158740

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2022-9198 advisory.

 - x86/speculation: Add knob for eibrs_retpoline_enabled (Patrick Colp) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Extend our code to properly support eibrs+lfence and eibrs+retpoline (Patrick Colp) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Update link to AMD speculation whitepaper (Kim Phillips) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Use generic retpoline by default on AMD (Kim Phillips) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting (Josh Poimboeuf) [Orabug: 33922122] {CVE-2021-26341}
 - Documentation/hw-vuln: Update spectre doc (Peter Zijlstra) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Add eIBRS + Retpoline options (Peter Zijlstra) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE (Peter Zijlstra (Intel)) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Merge one test in spectre_v2_user_select_mitigation() (Borislav Petkov) [Orabug:
 33922122] {CVE-2021-26341}
 - x86/speculation: Update ALTERNATIVEs to (more closely) match upstream (Patrick Colp) [Orabug: 33922122] {CVE-2021-26341}
 - x86/speculation: Fix bug in retpoline mode on AMD with (Patrick Colp) [Orabug: 33922122] {CVE-2021-26341}

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-2022-9198.html

Plugin Details

Severity: Medium

ID: 158740

File Name: oraclelinux_ELSA-2022-9198.nasl

Version: 1.7

Type: local

Agent: unix

Published: 3/9/2022

Updated: 11/1/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-26341

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-uek-headers, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:perf, p-cpe:/a:oracle:linux:kernel-uek-devel, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:kernel-uek-tools-libs-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:python-perf, p-cpe:/a:oracle:linux:kernel-uek-tools, p-cpe:/a:oracle:linux:kernel-uek-tools-libs, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/8/2022

Vulnerability Publication Date: 3/8/2022

Reference Information

CVE: CVE-2021-26341