Buffer overflow in SoX
Priority LOW 25CWE-120Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.
Summary
A vulnerability was found in SoX, where a heap-buffer-overflow occurs in function lsx_read_w_buf() in formats_i.c file. The vulnerability is exploitable with a crafted file, that could cause an application to crash.
Why it matters now
EPSS 0.00476 41st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Deferred Red Hat: fix deferred
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 |
|---|---|---|---|---|---|
| — | SoX (Sound eXchange) | Not Known | — | No fix listed | CNA |
- SoX (Sound eXchange) Vendor— Affected Not Known Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sound_exchange_project:sound_exchange:14.4.2-7:*:*:*:*:*:*:* | 14.4.2-7 | Vulnerable | Sound Exchange Project |
- cpe:2.3:a:sound_exchange_project:sound_exchange:14.4.2-7:*:*:*:*:*:*:* Versions 14.4.2-7 Vulnerable ·Sound Exchange Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | 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 AI (RHEL AI) | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23159
- 2026-10-03 Alias added: GHSA-c7w7-5cff-9ccj
References
More Sound Exchange Project Sound Exchange vulnerabilities
- TI-2021-17489 Heap-based buffer overflow in Sound Exchange libsox CVSS 3.1HIGH 8.8
- TI-2014-06760 Multiple heap-based buffer overflows in Sound eXchange (SoX) 14.4.1 and earlier allow… CVSS 2.0HIGH 7.5
- TI-2021-02588 Out-of-bounds read in sox CVSS 3.1CRITICAL 9.1
- TI-2017-13374 In the startread function in xa.c in Sound eXchange (SoX) through 14.4.2, a corrupt… CVSS 3.0HIGH 7.5
- TI-2023-17258 Heap-buffer-overflow in src/formats_i.c CVSS 3.1HIGH 7.8
- TI-2023-17151 Heap-buffer-overflow in src/hcom.c CVSS 3.1HIGH 7.8
Sources
- CVE-2021-23159 · CVE Program
- CVE-2021-23159 · NVD
- FIRST EPSS
- GHSA-c7w7-5cff-9ccj · GitHub Advisory Database · CC BY 4.0
- CVE-2021-23159 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences