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CVE-2022-44638

Published: 3 November 2022

In libpixman in Pixman before 0.42.2, there is an out-of-bounds write (aka heap-based buffer overflow) in rasterize_edges_8 due to an integer overflow in pixman_sample_floor_y.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
pixman
Launchpad, Ubuntu, Debian
jammy
Released (0.40.0-1ubuntu0.22.04.1)
kinetic
Released (0.40.0-1ubuntu0.22.10.1)
xenial
Released (0.33.6-1ubuntu0.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
bionic
Released (0.34.0-2ubuntu0.1)
focal
Released (0.38.4-0ubuntu2.1)
upstream
Released (0.42.2)
trusty
Released (0.30.2-2ubuntu1.2+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
lunar
Released (0.40.0-1.1)
Patches:
upstream: https://gitlab.freedesktop.org/pixman/pixman/-/commit/a1f88e842e0216a5b4df1ab023caebe33c101395

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H