Out-of-bounds read in libsndfile
Priority LOW 35CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · High
- Fix status
- Partial Red Hat: 2 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.01754 78th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 2 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libsndfile | libsndfile 1.1.0 | — | No fix listed | CNA |
- libsndfile Vendor— Affected libsndfile 1.1.0 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libsndfile_project:libsndfile:1.1.10:*:*:*:*:*:*:* | 1.1.10 | Vulnerable | Libsndfile Project |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:a:libsndfile_project:libsndfile:1.1.10:*:*:*:*:*:*:* Versions 1.1.10 Vulnerable ·Libsndfile Project
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
Red Hat 1 advisory
- RHSA-2022:1968 Released 2022-05-10 · Red Hat rating Moderatelibsndfile security update
- Red Hat Enterprise Linux AppStream (v. 8) libsndfile-1.0.28-12.el8
- Red Hat Enterprise Linux CRB (v. 8) libsndfile-devel-1.0.28-12.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2022:1968 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2022:1968 |
Not affected: 1 product
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4156
- 2026-10-03 Alias added: GHSA-vvgm-gfhp-rj9x
References
Exploit 2
Patch 1
Sources
- CVE-2021-4156 · CVE Program
- CVE-2021-4156 · NVD
- FIRST EPSS
- GHSA-vvgm-gfhp-rj9x · GitHub Advisory Database · CC BY 4.0
- CVE-2021-4156 · Red Hat security data · CC BY 4.0
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