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high 8.8

CVE-2022-44638 json

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 integ…

published 4y ago modified 3mo ago also EUVD-2022-47574 , JLSEC-2026-175

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

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.

Patch / fix

  • julia Pixman_jll 0.42.2+0
  • pixman pixman 0.42.2
  • pixman Debian 14, Debian 13, Debian 12 0.40.0-1.1

debian advisories DEBIAN-CVE-2022-44638

  • pixman Ubuntu 18.04 LTS 0.34.0-2ubuntu0.1
  • pixman Ubuntu 20.04 LTS 0.38.4-0ubuntu2.1
  • pixman Ubuntu 22.04 LTS 0.40.0-1ubuntu0.22.04.1
  • pixman Ubuntu Pro 14.04 LTS 0.30.2-2ubuntu1.2+esm1
  • pixman Ubuntu Pro 16.04 LTS 0.33.6-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2022-44638

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mingw-pixman RHEL 9 0.42.2-3.el9
  • mingw32-pixman RHEL 9 0.42.2-3.el9
  • mingw64-pixman RHEL 9 0.42.2-3.el9
  • pixman RHEL 8 0.38.4-3.el8_9
  • pixman RHEL 9 0.40.0-6.el9_3
  • pixman RHEL 8.8 EUS 0.38.4-3.el8_8
  • pixman RHEL 9.0 EUS 0.40.0-6.el9_0
  • pixman RHEL 8.6 EUS 0.38.4-3.el8_6

red hat advisories RHSA-2024:2525RHSA-2024:0131RHSA-2023:7754RHSA-2023:7531RHSA-2023:7386RHSA-2023:7403

  • pixman SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +6 more 0.34.0-8.3.1
  • pixman SLE Module for Desktop Applications 15 SP4, SLE Module for Basesystem 15 SP4, SLE Micro 5.3 +2 more 0.40.0-150400.3.3.1
  • pixman SLES for SAP 15 SP2, SLES for SAP 15 SP1, SLES for SAP 15 +23 more 0.34.0-150000.7.5.1

suse advisories SUSE-SU-2022:4249-1SUSE-SU-2022:4206-1SUSE-SU-2022:4148-1

  • mingw32-pixman AlmaLinux 9 0.42.2-3.el9
  • mingw64-pixman AlmaLinux 9 0.42.2-3.el9
  • pixman AlmaLinux 8 0.38.4-3.el8_9
  • pixman AlmaLinux 9 0.40.0-6.el9_3

almalinux advisories ALSA-2024:2525ALSA-2024:0131ALSA-2023:7754

  • pixman Rocky Linux 9 0.40.0-6.el9_3
  • mingw-pixman Rocky Linux 9 0.42.2-3.el9

rocky linux advisories RLSA-2023:7754RLSA-2024:2525

  • pixman Alpine 3.14, Alpine 3.13 0.40.0-r3
  • pixman Alpine 3.16, Alpine 3.15 0.40.0-r4

alpine advisories ALPINE-CVE-2022-44638

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pixman CBL-Mariner 2.0 0.42.2-1

azure linux advisories AZL-11392

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2022-44638 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-44638 updated cvss 7.0

pixman: Integer overflow in pixman_sample_floor_y leading to heap out-of-bounds write

  • Red Hat Enterprise Linux 7 pixman
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) pixman 0.38.4-3.el8_9
    fixed: vendor fix RHSA-2024:0131
  • Red Hat Enterprise Linux AppStream (v. 9) pixman 0.40.0-6.el9_3
    fixed: vendor fix RHSA-2023:7754
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) pixman 0.38.4-3.el8_6
    fixed: vendor fix RHSA-2023:7403
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) pixman 0.38.4-3.el8_8
    fixed: vendor fix RHSA-2023:7531
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) pixman 0.40.0-6.el9_0
    fixed: vendor fix RHSA-2023:7386
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) pixman 0.40.0-6.el9_2
    fixed: vendor fix RHSA-2023:7375
  • Red Hat Enterprise Linux CRB (v. 9) mingw-pixman 0.42.2-3.el9, mingw32-pixman 0.42.2-3.el9, mingw64-pixman 0.42.2-3.el9
    fixed: vendor fix RHSA-2024:2525

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

1.91% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • gitlab.freedesktop.org https://gitlab.freedesktop.org/pixman/pixman/-/issues/63 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/170121/pixman-pixman_sample_floor_y-Integer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
julia Pixman_jll
<0.42.2+0
0.42.2+0

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.