CVE-2021-0561
flac: out of bound write in append_to_verify_fifo_interleaved_ of stream_encoder.c
Severity
ModerateRed Hat Product Security
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE-787 · Out-of-bounds Write