Description
The III_i_stereo function in libmpg123/layer3.c in mpg123 through 1.25.1 allows remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted audio file that is mishandled in the code for the "block_type != 2" case, a similar issue to CVE-2017-9870.
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 | mpg123 | 1.25.3-1 | — |
| Debian 13 | mpg123 | 1.25.3-1 | — |
| Debian 12 | mpg123 | 1.25.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | mpg123 | 1.22.4-1ubuntu0.1+esm2 | USN-4806-1 |
| Ubuntu Pro 14.04 LTS | mpg123 | 1.16.0-1ubuntu1.1+esm1 | USN-4806-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mpg123 | 1.29.0-1.2 | openSUSE-SU-2024:11061-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.6 | mpg123 | 1.25.4-r0 | — |
| Alpine v3.5 | mpg123 | 1.25.4-r0 | — |
| Alpine v3.4 | mpg123 | 1.25.4-r0 | — |
| Alpine v3.3 | mpg123 | 1.25.4-r0 | — |
Advisories 2
- USN-4806-1 mpg123 vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- openSUSE-SU-2024:11061-1 libmpg123-0-1.29.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026