Search threats, CVEs… ⌘K
Back to vendor advisories
Microsoft Security Response CenterCVE-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.

Mariner

Read the vendor bulletin Get alerts for azl3 fio 3.37-3 on Azure Linux
7.5CVSS out of 10High severity
Scope

What the vendor says is affected

  • azl3 fio 3.37-3 on Azure Linux 3.0
  • cbl2 fio 3.30-3
  • cbl2 fio 3.30-3 on CBL-Mariner 2.0
  • cbl2 fio 3.30-3 on CBL Mariner 2.0

Versions the vendor lists as fixed

  • 3.37-4
Next step

What the vendor recommends

CBL-Mariner Releases Release Notes

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-30656View CVSS, KEV, EPSS, and threat context
Keep investigating
See every advisory from this vendor