Description
fdctrl_write_data in hw/block/fdc.c in QEMU 5.0.0 has a NULL pointer dereference via a NULL block pointer for the current drive.
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 | No fix yet | — |
| Debian 13 | qemu | No fix yet | — |
| Debian 12 | qemu | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | qemu +1 | No fix yet | — |
| Ubuntu 26.04 LTS | qemu +1 | No fix yet | — |
| Ubuntu 25.10 | qemu | No fix yet | — |
| Ubuntu 24.04 LTS | qemu | No fix yet | — |
| Ubuntu 22.04 LTS | qemu | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | qemu | No fix yet | — |
| Ubuntu Pro 18.04 LTS | qemu | No fix yet | — |
| Ubuntu Pro 16.04 LTS | qemu | No fix yet | — |
| Ubuntu Pro 14.04 LTS | qemu | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | qemu | 5.1.0-r1 | — |
| Alpine v3.23 | qemu | 5.1.0-r1 | — |
| Alpine v3.22 | qemu | 5.1.0-r1 | — |
| Alpine v3.21 | qemu | 5.1.0-r1 | — |
| Alpine v3.20 | qemu | 5.1.0-r1 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | qemu | 5.1.0-r1 | — |
| Alpine v3.18 | qemu | 5.1.0-r1 | — |
| Alpine v3.17 | qemu | 5.1.0-r1 | — |
| Alpine v3.16 | qemu | 5.1.0-r1 | — |