Description
A NULL pointer dereference vulnerability exists in fio (Flexible I/O Tester) v3.41 when parsing job files containing the fdp_pli option. The callback function str_fdp_pli_cb() does not validate the input pointer and calls strdup() on a NULL value when the option is specified without an argument. This results in a segmentation fault and process crash.
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 | fio | No fix yet | — |
| Debian 13 | fio | No fix yet | — |
| Debian 12 | fio | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | fio | No fix yet | — |
| Ubuntu 26.04 LTS | fio | No fix yet | — |
| Ubuntu 25.10 | fio | No fix yet | — |
| Ubuntu 24.04 LTS | fio | No fix yet | — |
| Ubuntu 22.04 LTS | fio | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | fio | No fix yet | — |
| Ubuntu 18.04 LTS | fio | No fix yet | — |
| Ubuntu 16.04 LTS | fio | No fix yet | — |
| Ubuntu 14.04 LTS | fio | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | fio | 3.43-1.1 | openSUSE-SU-2026:11958-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | fio | 3.37-4 | — |
Advisories 1
- openSUSE-SU-2026:11958-1 fio-3.43-1.1 on GA media SUSE / openSUSE Security Updates · Oct 3, 2026