CVE-2022-44638

HIGHNVD 8.88.8—

8.8

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.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 59.1%
KEV: Not listed

Published

November 3, 2022

Last Modified

May 2, 2025

References (16)

cve@mitrehttp://packetstormsecurity.com/files/170121/pixman-pixman_sample_floor_y-Integer-Overflow.html
cve@mitrehttp://www.openwall.com/lists/oss-security/2022/11/05/1
cve@mitrehttps://gitlab.freedesktop.org/pixman/pixman/-/issues/63
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/11/msg00008.html
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUJ2BULJTZ2BMSKQHB6US674P55UCWWS/
cve@mitrehttps://www.debian.org/security/2022/dsa-5276
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/170121/pixman-pixman_sample_floor_y-Integer-Overflow.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/11/05/1
af854a3a-2127-422b-91ae-364da2661108https://gitlab.freedesktop.org/pixman/pixman/-/issues/63
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/11/msg00008.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUJ2BULJTZ2BMSKQHB6US674P55UCWWS/

Patch Availability(9)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libpixman-1-dev (0.40.0-1ubuntu0.22.04.1) @ jammy	2026-05-25	ubuntu
ubuntu	libpixman-1-dev (0.33.6-1ubuntu0.1~esm1) @ xenial	2026-05-25	ubuntu
redhat	mingw-pixman-0:0.42.2-3.el9	2024-04-30	redhat
redhat	pixman-0:0.38.4-3.el8_9	2024-01-10	redhat
redhat	pixman-0:0.40.0-6.el9_3	2023-12-12	redhat
redhat	pixman-0:0.38.4-3.el8_8	2023-11-28	redhat
redhat	pixman-0:0.40.0-6.el9_2	2023-11-21	redhat
redhat	pixman-0:0.38.4-3.el8_6	2023-11-21	redhat
redhat	pixman-0:0.40.0-6.el9_0	2023-11-21	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-190Integer Overflow or Wraparound

All Vendor Advisories

(10)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
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2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2022-44638?

CVE-2022-44638 is a high vulnerability published on November 3, 2022. In libpixman in Pixman before 0.42.2, there is an out-of-bounds write (aka heap-based buffer overflow) in rasterizeedges8 due to an integer overflow in pixmansamplefloor_y.

When was CVE-2022-44638 disclosed?

CVE-2022-44638 was first published in the National Vulnerability Database on November 3, 2022, with the most recent update on May 2, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-44638 actively exploited?

CVE-2022-44638 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 59.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-44638?

CVE-2022-44638 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2022-44638?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-44638, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2022-44638

Published

Last Modified

References (16)

Patch Availability(9)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-44638?

Same vendor

Same CWE

CVE-2022-44638

📅 Published

🔄 Last Modified

🔗 References (16)

Patch Availability(9)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-44638?

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References (16)

Frequently asked(5)

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