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CVE-2021-4156 Details

Description

An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=2027690	CVE	ExploitIssue TrackingThird Party Advisory
https://github.com/libsndfile/libsndfile/issues/731	CVE	ExploitIssue TrackingThird Party Advisory
https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab	CVE	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html	CVE	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00036.html	CVE	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/12/msg00013.html	CVE
https://security.gentoo.org/glsa/202309-11	CVE
https://bugzilla.redhat.com/show_bug.cgi?id=2027690	[email protected]	ExploitIssue TrackingThird Party Advisory
https://github.com/libsndfile/libsndfile/issues/731	[email protected]	ExploitIssue TrackingThird Party Advisory
https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab	[email protected]	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html	[email protected]	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00036.html	[email protected]	Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202309-11	[email protected]

see all 13 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]
CWE-125	Out-of-bounds Read	[email protected]

Affected Products

Product	Versions
libsndfile project libsndfile	1.1.10
CPE cpe:2.3:a:libsndfile_project:libsndfile:1.1.10:::::::* Remediation No remediation found in references.
debian debian linux	9.0 10.0
CPE cpe:2.3:o:debian:debian_linux:9.0:::::::* cpe:2.3:o:debian:debian_linux:10.0:::::::* Remediation No remediation found in references.

Change History

11 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Dec 11, 2025	CVE Modified	CVE
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Sep 29, 2023	CVE Modified	[email protected]
Jan 5, 2023	Reanalysis	[email protected]
Oct 7, 2022	Modified Analysis	[email protected]
Sep 30, 2022	CVE Modified	[email protected]
Jun 28, 2022	CVE Modified	[email protected]
Mar 30, 2022	Initial Analysis	[email protected]
Mar 30, 2022	CVE Modified	[email protected]