# CVE-2021-3246: libsndfile: libsndfile is a C library for reading and writing files containing sampled sound, such as AIFF, AU, or WAV

CVE-2021-3246 is fixed in 4 products on 1 platform, first by libsndfile1 1.0.28-4ubuntu0.18.04.2, released July 20, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-3246
- Priority: High
- CVSS: 8.8 (Important)
- EPSS: 0.0312
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 20, 2021

## Description

libsndfile is a C library for reading and writing files containing sampled sound, such as AIFF, AU, or WAV.   Security Fix(es):  * libsndfile: Heap buffer overflow via crafted WAV file allows arbitrary code execution (CVE-2021-3246)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libsndfile RHEL 8 | 0:1.0.28-10.el8_4.1 | [RHSA-2021:3253](https://patchblox.com/security/data/fix/linux/rhsa-2021-3253.md) | Aug 24, 2021 |
| Linux | libsndfile ol 8 | 0:1.0.28-10.el8_4.1 | [ELSA-2021-3253](https://patchblox.com/security/data/fix/linux/elsa-2021-3253.md) | Aug 24, 2021 |
| Linux | libsndfile-devel RHEL 8 | 0:1.0.28-10.el8_4.1 | [RHSA-2021:3253](https://patchblox.com/security/data/fix/linux/rhsa-2021-3253.md) | Aug 24, 2021 |
| Linux | libsndfile-devel ol 8 | 0:1.0.28-10.el8_4.1 | [ELSA-2021-3253](https://patchblox.com/security/data/fix/linux/elsa-2021-3253.md) | Aug 24, 2021 |
| Linux | libsndfile1 Ubuntu 18.04.6 LTS (bionic) | 1.0.28-4ubuntu0.18.04.2 | [libsndfile1 1.0.28-4ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsndfile1-1.0.28-4ubuntu0.18.04.2.md) | Jul 20, 2021 |
| Linux | libsndfile1 Ubuntu 20.04 LTS (focal) | 1.0.28-7ubuntu0.1 | [libsndfile1 1.0.28-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsndfile1-1.0.28-7ubuntu0.1.md) | Jul 20, 2021 |
| Linux | sndfile-programs Ubuntu 18.04.6 LTS (bionic) | 1.0.28-4ubuntu0.18.04.2 | [sndfile-programs 1.0.28-4ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-sndfile-programs-1.0.28-4ubuntu0.18.04.2.md) | Jul 20, 2021 |
| Linux | sndfile-programs Ubuntu 20.04 LTS (focal) | 1.0.28-7ubuntu0.1 | [sndfile-programs 1.0.28-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-sndfile-programs-1.0.28-7ubuntu0.1.md) | Jul 20, 2021 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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