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CVE-2021-38593

Published: 12 August 2021

Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).

Notes

AuthorNote
leosilva
xenial/esm is not affected, code affected is not present
mdeslaur
code was introduced in:
https://github.com/qt/qtbase/commit/6869d2463a2e0d71bd04dbc82f5d6ef4933dc510
While the patch fixes code that was only introduced in 6.0, the
code in 6.0 did introduce a fix that 5.0 didn't have.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
qtbase-opensource-src
Launchpad, Ubuntu, Debian
bionic
Released (5.9.5+dfsg-0ubuntu2.6)
focal
Released (5.12.8+dfsg-0ubuntu2.1)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Not vulnerable
(5.15.2+dfsg-14)
kinetic Not vulnerable
(5.15.2+dfsg-14)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code not present)
Patches:
upstream: https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862 (6.1)
upstream: https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd (6.2)
upstream: https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c (dev)
qtbase-opensource-src-gles
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

kinetic Needs triage

trusty Does not exist

upstream Needs triage

xenial Needs triage

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H