CWE-590Variant

Free of Memory not on the Heap

Incomplete in the CWE catalog · 19 CVEs mapped

19
CVEs mapped
7.5
Median CVSS
What it is

The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc().

Recent examples
5.3cvss
CVE-2026-18582

CVE-2026-18582 - MEDIUM Severity Vulnerability

A security flaw has been discovered in mz-automation libiec61850 up to 1.6.1. This vulnerability affects the function Reporting_RCBWriteAccessHandler of the file src/iec61850/server/mms_mapping/reporting.c of the component Report Sending Path Handler. The manipulation results in free of memory not on the heap. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to resolve this issue. The patch is identified as 5b2a69f44256b8548927d8afdd7ac5f5381abe1e. It is suggested to upgrade the affected component. The vendor was contacted early about this disclosure.

MEDIUMno explanation yet
0%
epss
5.5cvss
CVE-2025-7006

Avast antivirus use of stack memory after free when scanning a malformed PE file

Use of stack memory after free vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25022500. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.

MEDIUMno explanation yet
0%
epss
6.1cvss
CVE-2026-47328

Invalid pointer deallocation in Ubuntu Linux AppArmor notification handling

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.

MEDIUMno explanation yet
0%
epss
The record
Technical detail
CWE ID
CWE-590
Abstraction
Variant
Structure
Simple
Status
Incomplete
References (2)