CVE-2026-54619
Description
A flaw was found in sqlite3-ruby. When a SQLite function is redefined with a different number of arguments (arity), the previously registered function handler is prematurely freed. This can lead to a use-after-free vulnerability, where the program attempts to access memory that has already been released. Such a vulnerability could potentially result in unexpected program behavior, information disclosure, or a denial of service.
Statement
This flaw exhibits low, bounded impact across Confidentiality, Integrity, and Availability (C:L, I:L, A:L) because exploitation requires an attacker to inject custom Ruby code that redefines an existing SQLite function with a different arity. In typical deployments, application databases process standard SQL queries and do not expose dynamic function registration interface bindings to untrusted user input. Consequently, successful exploitation is restricted to environments where untrusted local users already have execution privileges allowing them to register arbitrary Ruby callback functions.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
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 Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.5 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | High | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | Low | N/A | N/A |
| Integrity Impact | Low | N/A | N/A |
| Availability Impact | Low | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
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