CVE-2026-17573

Description

A flaw was found in the HDF5 library. A local user could exploit a double free vulnerability by processing a specially crafted HDF5 file with an oversized chunk size field using the h5repack tool. This could cause the application to unexpectedly terminate, leading to a denial of service.

Statement

This Moderate severity flaw in the HDF5 library can lead to a denial of service. It requires a local attacker to trick a user into processing a specially crafted HDF5 file with the h5repack utility, which could cause the application to crash due to a double free vulnerability.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score5N/AN/A
Attack VectorLocalN/AN/A
Attack ComplexityLowN/AN/A
Privileges RequiredLowN/AN/A
User InteractionRequiredN/AN/A
ScopeUnchangedN/AN/A
ConfidentialityNoneN/AN/A
Integrity ImpactNoneN/AN/A
Availability ImpactHighN/AN/A

Vector

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

Understanding the Weakness (CWE)

CWE-763

Integrity,Availability,Confidentiality

Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; Execute Unauthorized Code or Commands

This weakness may result in the corruption of memory, and perhaps instructions, possibly leading to a crash. If the corrupted memory can be effectively controlled, it may be possible to execute arbitrary code.

Frequently Asked Questions

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