CVE-2026-56364
Description
A Denial of Service (DoS) vulnerability exists in ImageMagick. An attacker with write access to the OpenCL cache directory can exhaust system memory and crash the application by placing a maliciously crafted file.
Statement
This vulnerability in ImageMagick is of Low impact. It requires an attacker to have local write access to the OpenCL cache directory and for OpenCL to be enabled. Under these conditions, a specially crafted XML file can cause a memory leak, leading to resource exhaustion and a denial of service over extended periods.
Mitigation
To mitigate this, restrict write access to the OpenCL cache directory to prevent unauthorized or malformed files from being introduced. Additionally, configure process-level memory limits (using mechanisms like ulimit, cgroups, or systemd directives) for ImageMagick to contain potential memory exhaustion and safeguard overall system 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 | 1.9 | N/A | 1.9 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | High | N/A | High |
| Privileges Required | High | N/A | High |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
cve.org: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart; DoS: Instability; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory)
Most memory leaks result in general product reliability problems, but if an attacker can intentionally trigger a memory leak, the attacker might be able to launch a denial of service attack (by crashing or hanging the program) or take advantage of other unexpected program behavior resulting from a low memory condition.
Other
Technical Impact: Reduce Performance
Frequently Asked Questions
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