CVE Database›CVE-2021-0308

CVE-2021-0308

gdisk: possible out-of-bounds-write in ReadLogicalParts of basicmbr.cc

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Severity

Moderate

Red Hat Product Security

6.8

CVSS 3.1

Review impact separately from score.

Published · February 4, 2022

Updated · November 21, 2025

Description

An out-of-bounds write flaw was found in gdisks' ReadLogicalParts() function of 'basicmbr.cc'. The exploitation of this flaw requires the use of a malicious storage device (for example, a USB Stick) that can cause a crash when physically inserted into the system and possible local privilege escalation. This flaw allows an attacker to compromise confidentiality, integrity, and data availability.

Statement

This vulnerability does affect Red Hat Enterprise Linux 6, 7, and 8 because our code-base is vulnerable to this issue.

Red Hat Product Security has rated this issue as a Moderate security impact and the issue is not currently planned to be addressed in future updates for Red Hat Enterprise Linux 6 and 7, hence, marked as Out-of-Support-Scope. For additional information, refer to the Red Hat Enterprise Linux Life Cycle & Update Policy: https://access.redhat.com/support/policy/updates/errata/.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6.8
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-787 · Out-of-bounds Write