CVE-2026-30656: 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.

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-05-03

Last Updated

2026-09-07

EPSS Score

0.28% (percentile: 20.5%)

Affected Products (4)

Other

• 20574-17084
• 20544
• 20544-21692
• 20544-17086

Security Updates (1)

• Security Update

Revision History

• 2026-05-03: Information published.
• 2026-05-04: Information published.
• 2026-05-15: Information published.
• 2026-08-07: Information published.
• 2026-08-10: Information published.
• 2026-09-07: Information published.