Description
oss_write in audio/ossaudio.c in QEMU before 5.0.0 mishandles a buffer position.
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 | qemu | 1:5.0-1 | — |
| Debian 13 | qemu | 1:5.0-1 | — |
| Debian 12 | qemu | 1:5.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.4 | USN-4467-1 |
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.31 | USN-4467-1 |
| Ubuntu 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.45 | USN-4467-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | qemu | 5.0.0-r0 | — |
| Alpine v3.23 | qemu | 5.0.0-r0 | — |
| Alpine v3.22 | qemu | 5.0.0-r0 | — |
| Alpine v3.21 | qemu | 5.0.0-r0 | — |
| Alpine v3.20 | qemu | 5.0.0-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | qemu | 5.0.0-r0 | — |
| Alpine v3.18 | qemu | 5.0.0-r0 | — |
| Alpine v3.17 | qemu | 5.0.0-r0 | — |
| Alpine v3.16 | qemu | 5.0.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | qemu +12 | 15:4.2.1-4.el7 | ELSA-2021-9034 |
Advisories 2
- USN-4467-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- ELSA-2021-9034 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 8, 2021