Description
An issue was discovered in libsndfile 1.0.28. There is a buffer over-read in the function i2alaw_array in alaw.c that will lead to a denial of service.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libsndfile | 1.0.28-5 | — |
| Debian 13 | libsndfile | 1.0.28-5 | — |
| Debian 12 | libsndfile | 1.0.28-5 | — |
| Debian 9 | libsndfile | 1.0.27-3+deb9u1 | DLA-2418-1 |
| Debian 8 | libsndfile | 1.0.25-9.1+deb8u2 | DLA-1618-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libsndfile | 1.0.28-4ubuntu0.18.04.1 | USN-4013-1 |
| Ubuntu 16.04 LTS | libsndfile | 1.0.25-10ubuntu0.16.04.2 | USN-4704-1, USN-4013-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | libsndfile | 1.0.25-7ubuntu2.2+esm1 | USN-4704-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | libsndfile +1 | 1.0.28-10.el8 | RHSA-2020:1636 |
| RHEL 7 | libsndfile +2 | 1.0.25-12.el7 | RHSA-2020:3922 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | libsndfile-devel | 1.0.28-10.el8 | ALSA-2020:1636 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libsndfile | 1.0.28-10.el8 | RLSA-2020:1636 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.23 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.22 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.21 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.20 | libsndfile | 1.0.28-r6 | — |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.18 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.17 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.16 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.15 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.14 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.13 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.12 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.11 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.10 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.9 | libsndfile | 1.0.28-r6 | — |
| Alpine v3.8 | libsndfile | 1.0.28-r5 | — |
| Alpine v3.7 | libsndfile | 1.0.28-r4 | — |
| Alpine v3.6 | libsndfile | 1.0.28-r4 | — |
| Alpine v3.5 | libsndfile | 1.0.28-r4 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | libsndfile +2 | 1.0.25-12.amzn2 | ALAS2-2020-1529 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | libsndfile | 1.0.28-10.el8 | ELSA-2020-1636 |
| Oracle Linux 7 | libsndfile +2 | 1.0.25-12.el7 | ELSA-2020-3922 |
Advisories 11
- ALSA-2020:1636 Moderate: libsndfile security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-4704-1 libsndfile vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2020:3922 Red Hat Security Advisory: libsndfile security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2020:1636 Red Hat Security Advisory: libsndfile security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-4013-1 libsndfile vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-2418-1 libsndfile - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1618-1 libsndfile - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2020:1636 Moderate: libsndfile security update Rocky Linux Security Advisories · Feb 5, 2026
- ALAS2-2020-1529 Low: libsndfile security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 22, 2020
- ELSA-2020-3922 Low: libsndfile security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020
- ELSA-2020-1636 Moderate: libsndfile security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 5, 2020