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Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9136)

high Nessus Plugin ID 148088

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-9136 advisory.

 - xen-blkback: fix error handling in xen_blkbk_map() (Jan Beulich) [Orabug: 32492110] {CVE-2021-26930}
 - xen-scsiback: don't 'handle' error by BUG() (Jan Beulich) [Orabug: 32492102] {CVE-2021-26931}
 - xen-netback: don't 'handle' error by BUG() (Jan Beulich) [Orabug: 32492102] {CVE-2021-26931}
 - xen-blkback: don't 'handle' error by BUG() (Jan Beulich) [Orabug: 32492102] {CVE-2021-26931}
 - Xen/gntdev: correct error checking in gntdev_map_grant_pages() (Jan Beulich) [Orabug: 32492094] {CVE-2021-26932}
 - Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages() (Jan Beulich) [Orabug: 32492094] {CVE-2021-26932}
 - Xen/x86: also check kernel mapping in set_foreign_p2m_mapping() (Jan Beulich) [Orabug: 32492094] {CVE-2021-26932}

Tenable has extracted the preceding description block directly from the Oracle 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 kernel-uek-container package.

See Also

https://linux.oracle.com/errata/ELSA-2021-9136.html

Plugin Details

Severity: High

ID: 148088

File Name: oraclelinux_ELSA-2021-9136.nasl

Version: 1.5

Type: local

Agent: unix

Published: 3/24/2021

Updated: 10/22/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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-2021-26930

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:7

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: 3/24/2021

Vulnerability Publication Date: 2/16/2021

Reference Information

CVE: CVE-2021-26930, CVE-2021-26931, CVE-2021-26932