fio 3.41 Job File Parser str_fdp_pli_cb null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in fio 3.41. Affected by this vulnerability is the function str_fdp_pli_cb of the component Job File Parser. Executing a manipulation can lead to null pointer dereference. This vulnerability is registered as CVE-2026-30656. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in fio 3.41. This vulnerability affects the function str_fdp_pli_cb of the component Job File Parser. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-30656 since 03/04/2026. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 307347 (Linux Distros Unpatched Vulnerability : CVE-2026-30656), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (307347). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 307347
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-30656

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/04/2026 CVE reserved
04/16/2026 +42 days Advisory disclosed
04/16/2026 +0 days VulDB entry created
04/18/2026 +2 days VulDB entry last update

Sourcesinfo

Advisory: 2055
Status: Not defined

CVE: CVE-2026-30656 (🔒)
GCVE (CVE): GCVE-0-2026-30656
GCVE (VulDB): GCVE-100-357940

Entryinfo

Created: 04/16/2026 18:27
Updated: 04/18/2026 03:38
Changes: 04/16/2026 18:27 (54), 04/18/2026 03:38 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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