CVE Database›Document archive›CVE-2021-0561

CVE-2021-0561

flac: out of bound write in append_to_verify_fifo_interleaved_ of stream_encoder.c

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · February 23, 2022

Updated · November 22, 2025

Description

An out-of-bounds write vulnerability was found in libFlak. The vulnerability occurs due to a missing bounds check. This flaw allows a local attacker without additional execution privileges to cause local information disclosure.

Statement

Red Hat Enterprise Linux 6, 7, 8, and 9 are affected because the code-base is affected by this vulnerability.

Red Hat Product Security has rated this issue as having 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 Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle & Updates 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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE-787 · Out-of-bounds Write