CVE-2021-38593

qt: out-of-bounds write in QOutlineMapper::convertPath called from QRasterPaintEngine::fill and QPaintEngineEx::stroke

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · July 27, 2021

Updated · March 27, 2026

Description

A vulnerability was found in Qt, where an out-of-bounds write in the QOutlineMapper::convertPath function can lead to a denial of service, a remote attacker could exploit this flaw by sending a specially crafted request, causing the application to crash.

Statement

This vulnerability is rated as moderate because it allows a remote attacker to trigger a denial of service through an out-of-bounds write, exploiting this flaw could crash the application, impacting availability but not compromising system security or integrity.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-787 · Out-of-bounds Write